Monthly Archives: July 2013

12C: IN DATABASE ARCHIVING

In this post, I will demonstrate a new feature introduced in 12c : In database archiving.  Instead of deleting old records, it enables you to archive  rows within a table by marking them as archived . The archived rows are invisible to running applications but remain in the original table in case they need to be restored at a later date.  In other words,  individual rows are  “soft-deleted”  so they are excluded from normal DML statements, but they’re still there for regulatory, compliance or archiving reasons.  Moreover, Archived data can be compressed to help improve backup performance.

This feature  is accomplshed  by means of a hidden column ORA_ARCHIVE_STATE. These invisible rows  can be viewed , if needed, by setting a session parameter ROW ARCHIVAL VISIBILITY.    Now, the DB’s need not  restore old backups to view archived data.

Overview:

— Create test user uilm, tablespace ilmtbs
— Connect as user uilm
— create and populate test table (5 rows) ilmtab with row archival clause
— Note that the table has an additional column ORA_ARCHIVE_STATE automatically created   and has the default value of 0 (indicates that row is active)
— Note that this column is not visible when we describe the table or simply issue select * from …
— We need to access data dictionary to view the column
— Make two  rows in the table inactive by setting ORA_ARCHIVE_STATE column to a non zero value.
— Check that inactive rows are not visible to query
— Set the parameter ROW ARCHIVAL VISIBILITY  = all to see inactive rows also
— Set the parameter ROW ARCHIVAL VISIBILITY  = active to hide inactive rows
— Add primary key constraint to thetable and try to add invisible id again : fails as constraints are still applicable to hidden rows
— Create another table from the table using CTAS and note that all the rows (visible/invisible are inserted but column ORA_ARCHIVE_STATE is not copied to the target table
— Drop primary key constraint
— Issue an insert into … select * and check that only 3 visible rows are inserted
— Set the parameter ROW ARCHIVAL VISIBILITY  = all to see inactive rows also
— Issue an insert into … select * and check that all the rows are inserted but ORA_ARCHIVE_STATE    is not propagated in inserted rows
— Disable row archiving in the table and check that column ORA_ARCHIVE_STATE is automatically dropped
— drop tablespace ilmtbs and user uilm

Implementation :

– Create test user, tablespace and test table

SQL> conn sys/oracle@em12c:1523/pdb1 as sysdba
sho con_name

CON_NAME
------------------------------
PDB1

SQL> set sqlprompt PDB1>

PDB1>create tablespace ilmtbs datafile '/u02/app/oracle/oradata/cdb1/pdb1/ilmtbs01.dbf' size 1m;
grant connect, resource, dba  to uilm identified by oracle;
alter user uilm default tablespace ilmtbs;

conn uilm/oracle@em12c:1523/pdb1
sho con_name

CON_NAME
------------------------------
PDB1

– create table with “row archival clause”

PDB1>drop table ilmtab purge;
create table ilmtab (id number, txt char(15)) row archival;
insert into ilmtab values (1, 'one');
insert into ilmtab values (2, 'two');
insert into ilmtab values (3, 'three');
insert into ilmtab values (4, 'four');
insert into ilmtab values (5, 'five');
commit;

– Note that the table has an additional column ORA_ARCHIVE_STATE automatically created    and has the default value of 0 (indicates that row is active)

PDB1>col ora_archive_state for a20
select id, txt, ora_archive_state from ilmtab;

ID TXT             ORA_ARCHIVE_STATE
---------- --------------- --------------------
1 one             0
2 two             0
3 three           0
4 four            0
5 five            0

– Note that this column is not visible when we describe the table or simply issue select * from …

PDB1>desc ilmtab
Name                                      Null?    Type
----------------------------------------- -------- ----------------------------
ID                                                 NUMBER
TXT                                                CHAR(15)

PDB1>select * from ilmtab;

ID TXT
---------- ---------------
1 one
2 two
3 three
4 four
5 five

— Since the column is invisible, let me try and make it visible
– Note that Since the column is maintained by oracle itself, user can’t modify its attributes

PDB1>alter table ilmtab modify (ora_archive_state visible);
alter table ilmtab modify (ora_archive_state visible)
*
ERROR at line 1:
ORA-38398: DDL not allowed on the system ILM column

— We need to access data dictionary to view the column
– Note that this column is shown as hidden and has not been generated by user

PDB1>col hidden for a7
col USER_GENERATED for 20
col USER_GENERATED for a20

select TABLE_NAME, COLUMN_NAME, HIDDEN_COLUMN, USER_GENERATED
from user_tab_cols where table_name='ILMTAB';

TABLE_NAME  COLUMN_NAME          HID USER_GENERATED
----------- -------------------- --- --------------------
ILMTAB      ORA_ARCHIVE_STATE    YES NO
ILMTAB      ID                   NO  YES
ILMTAB      TXT                  NO  YES

– We can make selected rows in the table inactive by setting ORA_ARCHIVE_STATE column to a non zero value.
This can be accomplished using update table… set ORA_ACRHIVE_STATE =
. <non-zero value>
. dbms_ilm.archivestatename(1)

– Let’s update row with id =1 with ORA_ARCHIVE_STATE=2
     and update row with id =2 with dbms_ilm.archivestatename(2)

PDB1>update ilmtab set ora_archive_state=2 where id=1;

update ilmtab set ora_archive_state= dbms_ilm.archivestatename(2) where id=2;

– Let’s check whether updates have been successful and hidden rows are not visible

PDB1>select id, txt, ORA_ARCHIVE_STATE from ilmtab;

ID TXT             ORA_ARCHIVE_STATE
---------- --------------- --------------------
3 three           0
4 four            0
5 five            0

— The updated rows are not visible!!
— Quite logical since we have made the rows active and by default only active rows are visible

– To see inactive rows also, we need to set the parameter ROW ARCHIVAL VISIBILITY  = all at session level
— Note that the column ORA_ARCHIVE_STATE has been set to 1 for id =2 although we had set it to 2 using
dbms_ilm.archivestatename(2)

PDB1>alter session set ROW ARCHIVAL VISIBILITY  = all;
select id, txt, ORA_ARCHIVE_STATE from ilmtab;

ID TXT             ORA_ARCHIVE_STATE
---------- --------------- --------------------
1 one             2
2 two             1
3 three           0
4 four            0
5 five            0

– Note that the column ORA_ARCHIVE_STATE has been set to 1 for id =2 although we had set it to 2 using    dbms_ilm.archivestatename(2)

— Let’s find out why
– Note that The function dbms_ilm.archivestatename(n) returns only two values    0 for n=0 and 1 for  n <> 0

PDB1>col state0 for a8
col state1 for a8
col state2 for a8
col state3 for a8

select dbms_ilm.archivestatename(0) state0 ,dbms_ilm.archivestatename(1) state1,
dbms_ilm.archivestatename(2) state2,dbms_ilm.archivestatename(3) state3  from dual;

STATE0   STATE1   STATE2   STATE3
-------- -------- -------- --------
0        1        1        1

– In order to make the inactive rows (id=1,2) hidden again, we need to set the parameter ROW ARCHIVAL VISIBILITY  = Active

PDB1>alter session set row archival visibility = active;
select id, txt, ORA_ARCHIVE_STATE from ilmtab;

ID TXT             ORA_ARCHIVE_STATE
---------- --------------- --------------------
3 three           0
4 four            0
5 five            0

– Let’s add primary key constraint to the table

SQL> alter table ilmtab add constraint ilmtab_pk primary key(id);

– Let’s try to insert record for an id which is already there but is not visible – say id=1

SQL> insert into ilmtab values (1, 'duplicate');
\insert into ilmtab values (1, 'duplicate')
*
ERROR at line 1:
ORA-00001: unique constraint (UILM.ILMTAB_PK) violated

-- It is clear that although we have made rows invisible, constraints defined are still adhered to

– Let’s try to create another table from ilmtab using CTAS
– Note that all the rows are inserted and column ORA_ARCHIVE_STATE is not copied to the target table

PDB1>create table ilmtab_copy as  select * from ilmtab;

     select id, txt, ora_archive_state from ilmtab_copy;

ERROR at line 1:
ORA-00904: "ORA_ARCHIVE_STATE": invalid identifier

SQL>  select id, txt from ilmtab_copy
  2  ;

        ID TXT
---------- ---------------
         1 one
         2 two
         3 three
         4 four
         5 five

– Let’s drop the primary key constraint and  issue an insert into … select *
– Note that only 3 new rows are visible

PDB1>alter table ilmtab drop primary key;
     insert into ilmtab select * from ilmtab;

3 rows created.

PDB1> select id, txt, ora_archive_state from ilmtab order by id;

        ID TXT             ORA_ARCHIVE_STATE
---------- --------------- --------------------
         3 three           0
         3 three           0
         4 four            0
         4 four            0
         5 five            0
         5 five            0

6 rows selected.

— I want to check if hidden rows were also inserted
— Let’s check by making  hidden rows visible again
– Note that only visible rows(id=3,4,5) were inserted

PDB1>alter session set row archival visibility=all;
     select id, txt, ora_archive_state from ilmtab order by id;

        ID TXT             ORA_ARCHIVE_STATE
---------- --------------- --------------------
         1 one             2
         2 two             1
         3 three           0
         3 three           0
         4 four            0
         4 four            0
         5 five            0
         5 five            0

8 rows selected.

– Let’s set row archival visibility = all and then again insert rows from ilmtab
– Note that all the 8 rows are inserted but ORA_ARCHIVE_STATE ha not been copied    ORA_ARCHIVE_STATE <> 0 in only 2 records (id = 1,2) even now.

PDB1>alter session set row archival visibility=all;
     insert into ilmtab select * from ilmtab;
     select id, txt, ora_archive_state from ilmtab order by id;
8 rows created.

SQL> 
        ID TXT             ORA_ARCHIVE_STATE
---------- --------------- --------------------
         1 one             0
         1 one             2
         2 two             0
         2 two             1
         3 three           0
         3 three           0
         3 three           0
         3 three           0
         4 four            0
         4 four            0
         4 four            0
         4 four            0
         5 five            0
         5 five            0
         5 five            0
         5 five            0

16 rows selected.

– Disable row level archiving for the table
— Note that as soon as row archiving is disabled, pseudo column ora_archive_state is dropped automatically

PDB1>alter table ilmtab no row archival;
     select id, txt, ORA_ARCHIVE_STATE from ilmtab;

ERROR at line 1:
ORA-00904: "ORA_ARCHIVE_STATE": invalid identifier

PDB1>col hidden for a7
col USER_GENERATED for 20
col USER_GENERATED for a20

select TABLE_NAME, COLUMN_NAME, HIDDEN_COLUMN, USER_GENERATED
from user_tab_cols where table_name='ILMTAB';

TABLE_NAME  COLUMN_NAME          HID USER_GENERATED
----------- -------------------- --- --------------------
ILMTAB      ID                   NO  YES
ILMTAB      TXT                  NO  YES

Note : Had we created this table using sys, we could not have disabled row archiving .

– cleanup –

PDB1>conn sys/oracle@em12c:1523/pdb1 as sysdba
drop tablespace ilmtbs including contents and datafiles;
drop user uilm cascade;

Summary:

– In-database archiving enables archiving of rows in tables created with row archival clause.

– Such tables have an oracle generated column ORA_ARCHIVE_STATE  which can contain values :

. 0 : Rows are visible  to queries

. Non zero : Rows are hidden from queries

– Invisible rows can be seen if parameter row archival visibility is set to all at session level.

– Default value of parameter row archival visibility is active : allows only those rows to be visible which have ora_archive_state=0.

– If another table is created using CTAS from a table with archived rows, column ORA_ARCHIVE_STATE is not copied to the target table

– If rows from this table are inserted into another table

. if row archival visibility = active

only visible rows are inserted with ORA_ARCHIVE_STATE=0 in target table

. if row archival visibility = all

all the rows are inserted with ORA_ARCHIVE_STATE=0 in target table

 

References:

http://docs.oracle.com/cd/E16655_01/server.121/e17613/part_lifecycle.htm#VLDBG14154

—————————————————————————————————-
Related Links:

Home

Database 12c Index

12c: Improve Backup Performance Using In-database Archiving
12c: Performance Issue With In-database Archiving
12c: Solution To Performance Issue With In-database Archiving

———————————————————————————————-

 

12c: CONNECTING TO PDB’S WITH SAME NAME

When you create a PDB, the database automatically creates and starts a service inside the CDB.The service has the  same name as the PDB. It is possible that the name of the service will collide with an existing service name which is registered with the same listener. For example if two or more CDBs on the same computer system use the same  listener, and the newly established PDB has the same service name as another PDB in these CDBs, then a collision occurs.

You must not attempt to operate a PDB that causes a collision with an existing service name. To avoid incorrect connections, two methods are possible:

– configure a separate listener for each CDB on the computer system or

– ensure that all service names for PDBs are unique on the computer system .

Firstly, I will demonstrate that a connection that specifies the default service name of a PDB can connect randomly to any of the PDBs with the same service name.  Then I will demonstrate both the methods to  avoid incorrect connections.

Current scenario:

I have two CDB’s (CDB1 and CDB2) on the same computer system.
Pluggable database PDB1 exists in both the CDB’s  CDB1 and CDB2

There are two listeners running in database home
listener1 on port 1523
listener2 on port 1524

Overview:

— Register both the CDB’s (and hence PDB’s) with listener1 running on port 1523.
— Verify that if we repeatedly  connect to service PDB1, we are randomly connected to different pdb’s   (PDB1@CDB1 and PDB1@CDB2).
— Register PDB1@CDB2 with listener2 on port 1524 and verify that now we can connect to the right pdb

— Create service spdb11 for PDB1@CDB1 and spdb12 for PDB1@CDB2 and verify that now we can connect to the right pdb using respective service.

Implementation:

Method – I :  Configure a separate listener for each CDB on the computer system or

– Register both the CDB’s with listener1 running on port 1523

CDB1>alter system set local_listener='em12c.oracle.com:1523';

sho parameter local_listener

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
local_listener                       string      em12c.oracle.com:1523

CDB2>alter system set local_listener='em12c.oracle.com:1523';

sho parameter local_listener

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
local_listener                       string      em12c.oracle.com:1523

– check that both the CDB’s and PDB1 in both the CDB’s are registered with listener1 (port 1523)

[oracle@em12c ~]$ lsnrctl stat listener1
(output trimmed)
Listener Parameter File   /u01/app/oracle/product/12.1.0/dbhome_1/network/admin/listener.ora
Listener Log File         /u01/app/oracle/diag/tnslsnr/em12c/listener1/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=em12c.oracle.com)(PORT=1523)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1523)))
Services Summary...
Service "cdb1" has 1 instance(s).
Instance "cdb1", status READY, has 1 handler(s) for this service...
Service "cdb1XDB" has 1 instance(s).
Instance "cdb1", status READY, has 1 handler(s) for this service...
Service "cdb2" has 1 instance(s).
Instance "cdb2", status READY, has 1 handler(s) for this service...
Service "cdb2XDB" has 1 instance(s).
Instance "cdb2", status READY, has 1 handler(s) for this service...
Service "pdb1" has 2 instance(s).
 Instance "cdb1", status READY, has 1 handler(s) for this service...
  Instance "cdb2", status READY, has 1 handler(s) for this service...
The command completed successfully

It can be seen that  PDB PDB1 has same name in both the CDB’s (CDB1 and CDB2) and default service for both the PDB’s (PDB1@CDB1 and PDB1@CDB2) are registered with the listener  on the same port (1523).

– Verify that if we repeatedly  connect to service PDB1, we are randomly connected to different pdb’s   (PDB1@CDB1 and PDB1@CDB2)

CDB1>conn system/oracle@em12c:1523/pdb1
sho parameter db_name

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
db_name                              string      cdb2

CDB1>conn system/oracle@em12c:1523/pdb1
sho parameter db_name

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
db_name                              string      cdb1

CDB1>conn system/oracle@em12c:1523/pdb1
sho parameter db_name

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
db_name                              string      cdb2

CDB1>conn system/oracle@em12c:1523/pdb1
sho parameter db_name

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
db_name                              string      cdb1

Hence, to connect to the right PDB, we should register different PDB’s with listeners running on different ports.

– Let’s register PDB1@CDB2 with listener2 on port 1524

CDB2>alter system set local_listener='em12c.oracle.com:1524';

sho parameter local_listener

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
local_listener                       string      em12c.oracle.com:1524

– check that  CDB1  and pdb1@CDB1  are registered with listener1 (port 1523)

[oracle@em12c ~]$ lsnrctl stat listener1

(output trimmed)

Listener Parameter File   /u01/app/oracle/product/12.1.0/dbhome_1/network/admin/listener.ora
Listener Log File         /u01/app/oracle/diag/tnslsnr/em12c/listener1/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=em12c.oracle.com)(PORT=1523)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1523)))
Services Summary...
Service "cdb1" has 1 instance(s).
Instance "cdb1", status READY, has 1 handler(s) for this service...
Service "cdb1XDB" has 1 instance(s).
Instance "cdb1", status READY, has 1 handler(s) for this service...
Service "pdb1" has 1 instance(s).
  Instance "cdb1", status READY, has 1 handler(s) for this service...
The command completed successfully

– check that  CDB2  and PDB1@CDB2  are registered with listener2 (port 1524)

[oracle@em12c ~]$ lsnrctl stat listener2

(output trimmed)

Listener Parameter File   /u01/app/oracle/product/12.1.0/dbhome_1/network/admin/listener.ora
Listener Log File         /u01/app/oracle/diag/tnslsnr/em12c/listener2/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=em12c.oracle.com)(PORT=1524)))
Services Summary...
Service "cdb2" has 1 instance(s).
Instance "cdb2", status READY, has 1 handler(s) for this service...
Service "cdb2XDB" has 1 instance(s).
Instance "cdb2", status READY, has 1 handler(s) for this service...
Service "pdb1" has 1 instance(s).
 Instance "cdb2", status READY, has 1 handler(s) for this service...
The command completed successfully

– Verify that now we can connect to the right pdb

– connect to PDB1@CDB1 (listener1, port 1523)

SQL> conn system/oracle@em12c:1523/pdb1
sho parameter db_name

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
db_name                              string      cdb1

SQL> conn system/oracle@em12c:1523/pdb1
sho parameter db_name

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
db_name                              string      cdb1

-- connect to PDB1@CDB2 (listener2, port 1524)

SQL> conn system/oracle@em12c:1524/pdb1
sho parameter db_name

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
db_name                              string      cdb2

SQL> conn system/oracle@em12c:1524/pdb1
sho parameter db_name

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
db_name                              string      cdb2

Hence,  to avoid  incorrect connections, one method is that we should configure a separate listener for each CDB on a computer system.

But this  approach is not easily transferable  to an Oracle RAC environment and hence it woule be better to use the second method i.e.  using services to make a PDB accessible in general, especially in RAC.

Method-II :Using Services to access a specific PDB

- Create and start service spdb1 for PDB1@CDB1

CDB1>alter session set container=pdb1;

PDB1@CDB1> exec dbms_service.create_service(‘spdb1′, ‘spdb1′);

exec dbms_service.start_service(‘spdb1′);

select name, network_name from dba_services;

NAME            NETWORK_NAME
————— —————
pdb1            pdb1
spdb1           spdb1

– Add the following entry to tnsnames.ora

NPDB11 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = em12c)(PORT = 1523))
)
(CONNECT_DATA =
(SERVICE_NAME = spdb1)
)
)

- Create and start service spdb12 for PDB1@CDB2

CDB2>alter session set container=pdb1;

PDB1@CDB2>exec dbms_service.create_service (‘spdb12′, ‘spdb12′);

exec dbms_service.start_service (‘spdb12′);

select name, network_name from dba_services;
NAME            NETWORK_NAME
————— —————
pdb1                pdb1
spdb12           spdb12

– Add the following entry to tnsnames.ora

NPDB12 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = em12c)(PORT = 1523))
)
(CONNECT_DATA =
(SERVICE_NAME = spdb12)
)
)

– Test connecting to specific PDB using services

– Connect to PDB1@CDB1

PDB1@CDB2>conn system/oracle@npdb11
sho con_name

CON_NAME
——————————
PDB1
PDB1@CDB2>sho parameter db_name

NAME                                 TYPE        VALUE
———————————— ———– ——————————
db_name                              string      cdb1

– Connect to PDB1@CDB2
PDB1@CDB2>conn system/oracle@npdb12
sho con_name

CON_NAME
——————————
PDB1
PDB1@CDB2>sho parameter db_name

NAME                                 TYPE        VALUE
———————————— ———– ——————————
db_name                              string      cdb2

References:

http://docs.oracle.com/cd/E16655_01/server.121/e17209/statements_6009.htm
http://docs.oracle.com/cd/E16655_01/server.121/e17633/cdblogic.htm#CIHDEDCC
————————————————————————————-

Related Links:

Home

Oracle 12c Index

12c : Connecting to CDB/PDB – Set Container vs Connect
12c: USE_SID_AS_SERVICE_listener_name

 

CLONE AN EXISTING PDB AS NON-SYS USER

 

In 12c, we can create a PDB by copying an existing PDB (the source PDB) and then plugging the copy into the CDB. The files associated with the source PDB are copied to a new location and the copied files are associated with the new PDB. This operation is called cloning a PDB.

Prerequisites

– You must be connected to a CDB and the current container must be the root.
– You must have the CREATE PLUGGABLE DATABASE system privilege.
– The CDB in which the PDB is being created must be in READ WRITE mode.
– If source PDB is  in the same CDB, then you must have the CREATE PLUGGABLE DATABASE system privilege in

  •     the root of the CDB in which the new PDB will be created and
  •      in the PDB being cloned.

I will demonstrate cloning of a PDB as a non-sys common user c##sys.

Current scenario:

Name of container database : CDB1
Name of source PDB in CDB1  : PDB1
Name of the PDB to be cloned from PDB1: PDB2 in CDB1

Overview:

— create a common user c##sys
— grant permissions to c##sys in all the containers in the CDB
— Put source PDB (PDB1) in read only mode
— Connect as user c##sys to cdb$root and create pluggable database   pdb2 from pdb1

Implementation:

– check current pdb’s in cdb1 = pdb@seed and pdb1

SQL> select name, open_mode from v$pdbs;

NAME                           OPEN_MODE
------------------------------ ----------
PDB$SEED                       READ ONLY
PDB1                           READ WRITE

– create a common user c##sys

SQL> create user c##sys identified by oracle;

– grant permissions to c##sys in all the containers in the CDB
— Note that this step is to be carried out when the PDB to be cloned
is in read write mode so that user’s entry is made in the source
PDB’s data dictionary

SQL> grant connect, resource, create pluggable database to c##sys container=all;

– check that user c##sys is listed in souce PDB PDB1’s data dictionary

– set current container to PDB1

SQL> alter session set container=pdb1;

– check that current container = PDB1 and current user = SYS

SQL> sho con_name

CON_NAME
------------------------------
PDB1

SQL> sho user
USER is "SYS"

– check that user c##sys has an   entry  in the source PDB’s data dictionary

SQL> select username from dba_users where username like '%##%';

USERNAME
--------------------------------------------------------------------------------
C##SYS

– Put source PDB (PDB1) in read only mode

SQL> conn / as sysdba
sho con_name

CON_NAME
------------------------------
CDB$ROOT

SQL> alter pluggable database pdb1 close;
alter pluggable database pdb1 open read only;

– Check that source PDB PDB1 is in read only mode

SQL>  select con_id,  name,open_mode from v$pdbs;

CON_ID NAME                           OPEN_MODE
---------- ------------------------------ ----------
2 PDB$SEED                       READ ONLY
3 PDB1                           READ ONLY

– Find out names of datafiles of source PDb PDB1 (needed for FILE_NAME_CONVERT)

SQL> select name from v$datafile where con_id = 3;

NAME
--------------------------------------------------------------------------------
/u02/app/oracle/oradata/cdb1/pdb1/system01.dbf
/u02/app/oracle/oradata/cdb1/pdb1/sysaux01.dbf
/u02/app/oracle/oradata/cdb1/pdb1/SAMPLE_SCHEMA_users01.dbf
/u02/app/oracle/oradata/cdb1/pdb1/example01.dbf

– Connect as user c##sys to cdb$root and create pluggable database
   pdb2 from pdb1

SQL> conn c##sys/oracle
sho con_name

CON_NAME
------------------------------
CDB$ROOT

– Try to create pluggable database pdb2 from pdb1 without specifying   FILE_NAME_CONVERT – gives error

SQL> create pluggable database pdb2 from pdb1;
create pluggable database pdb2 from pdb1
*
ERROR at line 1:
ORA-65016: FILE_NAME_CONVERT must be specified

– Try to create pluggable database pdb2 from pdb1  specifying
   FILE_NAME_CONVERT – succeeds

SQL> create pluggable database pdb2 from pdb1 file_name_convert=('/u02/app/oracle/oradata/cdb1/pdb1','/u02/app/oracle/oradata/cdb1/pdb2');

Pluggable database created.

– connect as sys user to cdb1 and check that newly created pdb (PDB2) is in mounted state

SQL>conn sys/oracle@cdb1 as sysdba

select name,open_mode from v$pdbs;

NAME                           OPEN_MODE
------------------------------ ----------
PDB$SEED                       READ ONLY
PDB1                           READ ONLY
PDB2                           MOUNTED

– Open PDB2 and verify that it is open in read write mode

SQL> alter pluggable database pdb2 open;
select con_id,  name,open_mode from v$pdbs;

CON_ID NAME                           OPEN_MODE
---------- ------------------------------ ----------
2 PDB$SEED                       READ ONLY
3 PDB1                           READ ONLY
  4 PDB2                           READ WRITE

– check that datafiles for PDB2 are in the location as was specified
   in file_name_convert clause of create pluggable database statement

SQL>  select name from v$datafile where con_id = 4;

NAME
--------------------------------------------------------------------------------
/u02/app/oracle/oradata/cdb1/pdb2/system01.dbf
/u02/app/oracle/oradata/cdb1/pdb2/sysaux01.dbf
/u02/app/oracle/oradata/cdb1/pdb2/SAMPLE_SCHEMA_users01.dbf
/u02/app/oracle/oradata/cdb1/pdb2/example01.dbf

— Check that a new default service has been  created for the PDB. The service has the same name as the PDB and can be used to access the PDB.

SQL> col name for a10
col pdb for a10
select pdb, name from cdb_services where pdb = ‘PDB2′;

PDB        NAME
———- ———-
PDB2       pdb2

– set current container to PDB2

SQL> alter session set container=pdb2;

sho con_name

CON_NAME
------------------------------
PDB2

SQL> sho user
USER is "SYS"

– check that the data dictionary of PDB2 has automatically got entry for common    user c##sys as the user was granted permissions for all the containers in CDB1

SQL> col username for a15
select username, common from dba_users where username like '%C##%';

USERNAME        COM
--------------- ---
C##SYS          YES

– check that user c##sys can connect to PDB2 as the user was granted permissions for all the containers in CDB1

SQL> conn c##sys/oracle@em12c:1522/pdb2
sho con_name

CON_NAME
------------------------------
PDB2

SQL> sho user
USER is "C##SYS"

References:

http://docs.oracle.com/cd/E16655_01/server.121/e17209/statements_6009.htm

http://docs.oracle.com/cd/E16655_01/server.121/e17636/cdb_plug.htm#CEGHCJDB

https://forums.oracle.com/message/11117312#11117312
—————————————————————————————

Related Links:

Home

Oracle 12c Index

12c: Plug In 12c Non-CDB as PDB

PARAMETERS DEPRECATED IN 12c

Here is the list of 26 parameters deprecated in  12.1.0.1c

SQL>SELECT name from v$parameter WHERE isdeprecated = ‘TRUE’ ORDER BY name;

NAME
——————————————————————————–
active_instance_count
background_dump_dest
buffer_pool_keep
buffer_pool_recycle
commit_write
cursor_space_for_time
fast_start_io_target
global_context_pool_size
instance_groups
lock_name_space
log_archive_local_first
log_archive_start
max_enabled_roles
parallel_automatic_tuning
parallel_io_cap_enabled
parallel_server
parallel_server_instances
plsql_debug
plsql_v2_compatibility
remote_os_authent
resource_manager_cpu_allocation
sec_case_sensitive_logon
serial_reuse
sql_trace
standby_archive_dest
user_dump_dest

26 rows selected.

References: Oracle Documentation

——————————————————————–

Related Links:

Home

Database Index
Oracle 12c Index

12c: SQL Management Base Stores Plan Rows too
Documented Parameters in 12c
Undocumented Parameters in 12c

———–

DOCUMENTED PARAMETERS IN 12c

In this post, I will give a list of all (367) documented parameters in Oracle 12.1.0.1c. Here is a query to see all the parameters (documented and undocumented) which contain the string you enter when prompted:

– Enter name of the parameter when prompted

SET linesize 235
col Parameter FOR a50
col SESSION FOR a28
col Instance FOR a55
col S FOR a1
col I FOR a1
col D FOR a1
col Description FOR a90

SELECT 
  a.ksppinm  "Parameter",
  decode(p.isses_modifiable,'FALSE',NULL,NULL,NULL,b.ksppstvl) "Session",
  c.ksppstvl "Instance",
  decode(p.isses_modifiable,'FALSE','F','TRUE','T') "S",
  decode(p.issys_modifiable,'FALSE','F','TRUE','T','IMMEDIATE','I','DEFERRED','D') "I",
  decode(p.isdefault,'FALSE','F','TRUE','T') "D",
  a.ksppdesc "Description"
FROM x$ksppi a, x$ksppcv b, x$ksppsv c, v$parameter p
WHERE a.indx = b.indx AND a.indx = c.indx
  AND p.name(+) = a.ksppinm
  AND UPPER(a.ksppinm) LIKE UPPER('%&1%')
ORDER BY a.ksppinm;

Enter value for 1:

Here is the list of all (367) documented parameters in Oracle 12.1.0.1c  :

SQL>     col parameter for a15 word_wrapped
col Description for a55 word_wrapped
set pagesize 50000
set linesize 80
select upper(KSPPINM) parameter,           ' : ',
KSPPDESC Description from x$ksppi
where substr(ksppinm,1,1) <> '_' order by 1,3;

PARAMETER                     DESCRIPTION    
—————                       ——————————————————-
ACTIVE_INSTANCE  :  number of active instances in the cluster database
_COUNT

AQ_TM_PROCESSES  :  number of AQ Time Managers to start
ARCHIVE_LAG_TAR  :  Maximum number of seconds of redos the standby could
GET                 lose

ASM_DISKGROUPS   :  disk groups to mount automatically
ASM_DISKSTRING   :  disk set locations for discovery
ASM_POWER_LIMIT  :  number of parallel relocations for disk rebalancing
ASM_PREFERRED_R  :  preferred read failure groups
EAD_FAILURE_GRO
UPS

AUDIT_FILE_DEST  :  Directory in which auditing files are to reside
AUDIT_SYSLOG_LE  :  Syslog facility and level
VEL

AUDIT_SYS_OPERA  :  enable sys auditing
TIONS

AUDIT_TRAIL      :  enable system auditing
AWR_SNAPSHOT_TI  :  Setting for AWR Snapshot Time Offset
ME_OFFSET

BACKGROUND_CORE  :  Core Size for Background Processes
_DUMP

BACKGROUND_DUMP  :  Detached process dump directory
_DEST

BACKUP_TAPE_IO_  :  BACKUP Tape I/O slaves
SLAVES

BITMAP_MERGE_AR  :  maximum memory allow for BITMAP MERGE
EA_SIZE

BLANK_TRIMMING   :  blank trimming semantics parameter
BUFFER_POOL_KEE  :  Number of database blocks/latches in keep buffer pool
P

BUFFER_POOL_REC  :  Number of database blocks/latches in recycle buffer
YCLE                pool

CELL_OFFLOADGRO  :  Set the offload group name
UP_NAME

CELL_OFFLOAD_CO  :  Cell packet compaction strategy
MPACTION

CELL_OFFLOAD_DE  :  enable SQL processing offload of encrypted data to
CRYPTION            cells

CELL_OFFLOAD_PA  :  Additional cell offload parameters
RAMETERS

CELL_OFFLOAD_PL  :  Cell offload explain plan display
AN_DISPLAY

CELL_OFFLOAD_PR  :  enable SQL processing offload to cells
OCESSING

CIRCUITS         :  max number of circuits
CLIENT_RESULT_C  :  client result cache maximum lag in milliseconds
ACHE_LAG

CLIENT_RESULT_C  :  client result cache max size in bytes
ACHE_SIZE

CLONEDB          :  clone database
CLUSTER_DATABAS  :  if TRUE startup in cluster database mode
E

CLUSTER_DATABAS  :  number of instances to use for sizing cluster db SGA
E_INSTANCES         structures

CLUSTER_INTERCO  :  interconnects for RAC use
NNECTS

COMMIT_LOGGING   :  transaction commit log write behaviour
COMMIT_POINT_ST  :  Bias this node has toward not preparing in a two-phase
RENGTH              commit

COMMIT_WAIT      :  transaction commit log wait behaviour
COMMIT_WRITE     :  transaction commit log write behaviour
COMPATIBLE       :  Database will be completely compatible with this
software version

CONNECTION_BROK  :  connection brokers specification
ERS

CONTROL_FILES    :  control file names list
CONTROL_FILE_RE  :  control file record keep time in days
CORD_KEEP_TIME

CONTROL_MANAGEM  :  declares which manageability packs are enabled
ENT_PACK_ACCESS

CORE_DUMP_DEST   :  Core dump directory
CPU_COUNT        :  number of CPUs for this instance
CREATE_BITMAP_A  :  size of create bitmap buffer for bitmap index
REA_SIZE

CREATE_STORED_O  :  create stored outlines for DML statements
UTLINES

CURSOR_BIND_CAP  :  Allowed destination for captured bind variables
TURE_DESTINATIO
N

CURSOR_SHARING   :  cursor sharing mode
CURSOR_SPACE_FO  :  use more memory in order to get faster execution
R_TIME

DBWR_IO_SLAVES   :  DBWR I/O slaves
DB_16K_CACHE_SI  :  Size of cache for 16K buffers
ZE

DB_2K_CACHE_SIZ  :  Size of cache for 2K buffers
E

DB_32K_CACHE_SI  :  Size of cache for 32K buffers
ZE

DB_4K_CACHE_SIZ  :  Size of cache for 4K buffers
E

DB_8K_CACHE_SIZ  :  Size of cache for 8K buffers
E

DB_BIG_TABLE_CA  :  Big table cache target size in percentage
CHE_PERCENT_TAR
GET

DB_BLOCK_BUFFER  :  Number of database blocks cached in memory
S

DB_BLOCK_CHECKI  :  header checking and data and index block checking
NG

DB_BLOCK_CHECKS  :  store checksum in db blocks and check during reads
UM

DB_BLOCK_SIZE    :  Size of database block in bytes
DB_CACHE_ADVICE  :  Buffer cache sizing advisory
DB_CACHE_SIZE    :  Size of DEFAULT buffer pool for standard block size
buffers

DB_CREATE_FILE_  :  default database location
DEST

DB_CREATE_ONLIN  :  online log/controlfile destination #1
E_LOG_DEST_1

DB_CREATE_ONLIN  :  online log/controlfile destination #2
E_LOG_DEST_2

DB_CREATE_ONLIN  :  online log/controlfile destination #3
E_LOG_DEST_3

DB_CREATE_ONLIN  :  online log/controlfile destination #4
E_LOG_DEST_4

DB_CREATE_ONLIN  :  online log/controlfile  destination #5
E_LOG_DEST_5

DB_DOMAIN        :  directory part of global database name stored with
CREATE DATABASE

DB_FILES         :  max allowable # db files
DB_FILE_MULTIBL  :  db block to be read each IO
OCK_READ_COUNT

DB_FILE_NAME_CO  :  datafile name convert patterns and strings for
NVERT               standby/clone db

DB_FLASHBACK_RE  :  Maximum Flashback Database log retention time in
TENTION_TARGET      minutes.

DB_FLASH_CACHE_  :  flash cache file for default block size
FILE

DB_FLASH_CACHE_  :  flash cache size for db_flash_cache_file
SIZE

DB_INDEX_COMPRE  :  options for table or tablespace level compression
SSION_INHERITAN     inheritance
CE

DB_KEEP_CACHE_S  :  Size of KEEP buffer pool for standard block size
IZE                 buffers

DB_LOST_WRITE_P  :  enable lost write detection
ROTECT

DB_NAME          :  database name specified in CREATE DATABASE
DB_RECOVERY_FIL  :  default database recovery file location
E_DEST

DB_RECOVERY_FIL  :  database recovery files size limit
E_DEST_SIZE

DB_RECYCLE_CACH  :  Size of RECYCLE buffer pool for standard block size
E_SIZE              buffers

DB_SECUREFILE    :  permit securefile storage during lob creation
DB_ULTRA_SAFE    :  Sets defaults for other parameters that control
protection levels

DB_UNIQUE_NAME   :  Database Unique Name
DB_UNRECOVERABL  :  Track nologging SCN in controlfile
E_SCN_TRACKING

DB_WRITER_PROCE  :  number of background database writer  processes to
SSES                start

DDL_LOCK_TIMEOU  :  timeout to restrict the time that ddls wait for dml
T                   lock

DEFERRED_SEGMEN  :  defer segment creation to first insert
T_CREATION

DG_BROKER_CONFI  :  data guard broker configuration file #1
G_FILE1

DG_BROKER_CONFI  :  data guard broker configuration file #2
G_FILE2

DG_BROKER_START  :  start Data Guard broker (DMON process)
DIAGNOSTIC_DEST  :  diagnostic base directory
DISK_ASYNCH_IO   :  Use asynch I/O for random access devices
DISPATCHERS      :  specifications of dispatchers
DISTRIBUTED_LOC  :  number of seconds a distributed transaction waits for a
K_TIMEOUT           lock

DML_LOCKS        :  dml locks – one for each table modified in a
transaction

DNFS_BATCH_SIZE  :  Max number of dNFS asynch I/O requests queued per
session

DST_UPGRADE_INS  :  Enables/Disables internal conversions during DST
ERT_CONV            upgrade

ENABLE_DDL_LOGG  :  enable ddl logging
ING

ENABLE_PLUGGABL  :  Enable Pluggable Database
E_DATABASE

EVENT            :  debug event control – default null string
FAL_CLIENT       :  FAL client
FAL_SERVER       :  FAL server list
FAST_START_IO_T  :  Upper bound on recovery reads
ARGET

FAST_START_MTTR  :  MTTR target in seconds
_TARGET

FAST_START_PARA  :  max number of parallel recovery slaves that may be used
LLEL_ROLLBACK

FILEIO_NETWORK_  :  Network Adapters for File I/O
ADAPTERS

FILESYSTEMIO_OP  :  IO operations on filesystem files
TIONS

FILE_MAPPING     :  enable file mapping
FIXED_DATE       :  fixed SYSDATE value
GCS_SERVER_PROC  :  number of background gcs server processes to start
ESSES

GLOBAL_CONTEXT_  :  Global Application Context Pool Size in Bytes
POOL_SIZE

GLOBAL_NAMES     :  enforce that database links have same name as remote
database

GLOBAL_TXN_PROC  :  number of background global transaction processes to
ESSES               start

HASH_AREA_SIZE   :  size of in-memory hash work area
HEAT_MAP         :  ILM Heatmap Tracking
HI_SHARED_MEMOR  :  SGA starting address (high order 32-bits on 64-bit
Y_ADDRESS           platforms)

HS_AUTOREGISTER  :  enable automatic server DD updates in HS agent
self-registration

IFILE            :  include file in init.ora
INSTANCE_GROUPS  :  list of instance group names
INSTANCE_NAME    :  instance name supported by the instance
INSTANCE_NUMBER  :  instance number
INSTANCE_TYPE    :  type of instance to be executed
JAVA_JIT_ENABLE  :  Java VM JIT enabled
D

JAVA_MAX_SESSIO  :  max allowed size in bytes of a Java sessionspace
NSPACE_SIZE

JAVA_POOL_SIZE   :  size in bytes of java pool
JAVA_SOFT_SESSI  :  warning limit on size in bytes of a Java sessionspace
ONSPACE_LIMIT

JOB_QUEUE_PROCE  :  maximum number of job queue slave processes
SSES

LARGE_POOL_SIZE  :  size in bytes of large pool
LDAP_DIRECTORY_  :  RDBMS’s LDAP access option
ACCESS

LDAP_DIRECTORY_  :  OID usage parameter
SYSAUTH

LICENSE_MAX_SES  :  maximum number of non-system user sessions allowed
SIONS

LICENSE_MAX_USE  :  maximum number of named users that can be created in
RS                  the database

LICENSE_SESSION  :  warning level for number of non-system user sessions
S_WARNING

LISTENER_NETWOR  :  listener registration networks
KS

LOCAL_LISTENER   :  local listener
LOCK_NAME_SPACE  :  lock name space used for generating lock names for
standby/clone database

LOCK_SGA         :  Lock entire SGA in physical memory
LOG_ARCHIVE_CON  :  log archive config parameter
FIG

LOG_ARCHIVE_DES  :  archival destination text string
T

LOG_ARCHIVE_DES  :  archival destination #1 text string
T_1

LOG_ARCHIVE_DES  :  archival destination #10 text string
T_10

LOG_ARCHIVE_DES  :  archival destination #11 text string
T_11

LOG_ARCHIVE_DES  :  archival destination #12 text string
T_12

LOG_ARCHIVE_DES  :  archival destination #13 text string
T_13

LOG_ARCHIVE_DES  :  archival destination #14 text string
T_14

LOG_ARCHIVE_DES  :  archival destination #15 text string
T_15

LOG_ARCHIVE_DES  :  archival destination #16 text string
T_16

LOG_ARCHIVE_DES  :  archival destination #17 text string
T_17

LOG_ARCHIVE_DES  :  archival destination #18 text string
T_18

LOG_ARCHIVE_DES  :  archival destination #19 text string
T_19

LOG_ARCHIVE_DES  :  archival destination #2 text string
T_2

LOG_ARCHIVE_DES  :  archival destination #20 text string
T_20

LOG_ARCHIVE_DES  :  archival destination #21 text string
T_21

LOG_ARCHIVE_DES  :  archival destination #22 text string
T_22

LOG_ARCHIVE_DES  :  archival destination #23 text string
T_23

LOG_ARCHIVE_DES  :  archival destination #24 text string
T_24

LOG_ARCHIVE_DES  :  archival destination #25 text string
T_25

LOG_ARCHIVE_DES  :  archival destination #26 text string
T_26

LOG_ARCHIVE_DES  :  archival destination #27 text string
T_27

LOG_ARCHIVE_DES  :  archival destination #28 text string
T_28

LOG_ARCHIVE_DES  :  archival destination #29 text string
T_29

LOG_ARCHIVE_DES  :  archival destination #3 text string
T_3

LOG_ARCHIVE_DES  :  archival destination #30 text string
T_30

LOG_ARCHIVE_DES  :  archival destination #31 text string
T_31

LOG_ARCHIVE_DES  :  archival destination #4 text string
T_4

LOG_ARCHIVE_DES  :  archival destination #5 text string
T_5

LOG_ARCHIVE_DES  :  archival destination #6 text string
T_6

LOG_ARCHIVE_DES  :  archival destination #7 text string
T_7

LOG_ARCHIVE_DES  :  archival destination #8 text string
T_8

LOG_ARCHIVE_DES  :  archival destination #9 text string
T_9

LOG_ARCHIVE_DES  :  archival destination #1 state text string
T_STATE_1

LOG_ARCHIVE_DES  :  archival destination #10 state text string
T_STATE_10

LOG_ARCHIVE_DES  :  archival destination #11 state text string
T_STATE_11

LOG_ARCHIVE_DES  :  archival destination #12 state text string
T_STATE_12

LOG_ARCHIVE_DES  :  archival destination #13 state text string
T_STATE_13

LOG_ARCHIVE_DES  :  archival destination #14 state text string
T_STATE_14

LOG_ARCHIVE_DES  :  archival destination #15 state text string
T_STATE_15

LOG_ARCHIVE_DES  :  archival destination #16 state text string
T_STATE_16

LOG_ARCHIVE_DES  :  archival destination #17 state text string
T_STATE_17

LOG_ARCHIVE_DES  :  archival destination #18 state text string
T_STATE_18

LOG_ARCHIVE_DES  :  archival destination #19 state text string
T_STATE_19

LOG_ARCHIVE_DES  :  archival destination #2 state text string
T_STATE_2

LOG_ARCHIVE_DES  :  archival destination #20 state text string
T_STATE_20

LOG_ARCHIVE_DES  :  archival destination #21 state text string
T_STATE_21

LOG_ARCHIVE_DES  :  archival destination #22 state text string
T_STATE_22

LOG_ARCHIVE_DES  :  archival destination #23 state text string
T_STATE_23

LOG_ARCHIVE_DES  :  archival destination #24 state text string
T_STATE_24

LOG_ARCHIVE_DES  :  archival destination #25 state text string
T_STATE_25

LOG_ARCHIVE_DES  :  archival destination #26 state text string
T_STATE_26

LOG_ARCHIVE_DES  :  archival destination #27 state text string
T_STATE_27

LOG_ARCHIVE_DES  :  archival destination #28 state text string
T_STATE_28

LOG_ARCHIVE_DES  :  archival destination #29 state text string
T_STATE_29

LOG_ARCHIVE_DES  :  archival destination #3 state text string
T_STATE_3

LOG_ARCHIVE_DES  :  archival destination #30 state text string
T_STATE_30

LOG_ARCHIVE_DES  :  archival destination #31 state text string
T_STATE_31

LOG_ARCHIVE_DES  :  archival destination #4 state text string
T_STATE_4

LOG_ARCHIVE_DES  :  archival destination #5 state text string
T_STATE_5

LOG_ARCHIVE_DES  :  archival destination #6 state text string
T_STATE_6

LOG_ARCHIVE_DES  :  archival destination #7 state text string
T_STATE_7

LOG_ARCHIVE_DES  :  archival destination #8 state text string
T_STATE_8

LOG_ARCHIVE_DES  :  archival destination #9 state text string
T_STATE_9

LOG_ARCHIVE_DUP  :  duplex archival destination text string
LEX_DEST

LOG_ARCHIVE_FOR  :  archival destination format
MAT

LOG_ARCHIVE_LOC  :  Establish EXPEDITE attribute default value
AL_FIRST

LOG_ARCHIVE_MAX  :  maximum number of active ARCH processes
_PROCESSES

LOG_ARCHIVE_MIN  :  minimum number of archive destinations that must
_SUCCEED_DEST       succeed

LOG_ARCHIVE_STA  :  start archival process on SGA initialization
RT

LOG_ARCHIVE_TRA  :  Establish archivelog operation tracing level
CE

LOG_BUFFER       :  redo circular buffer size
LOG_CHECKPOINTS  :  log checkpoint begin/end to alert file
_TO_ALERT

LOG_CHECKPOINT_  :  # redo blocks checkpoint threshold
INTERVAL

LOG_CHECKPOINT_  :  Maximum time interval between checkpoints in seconds
TIMEOUT

LOG_FILE_NAME_C  :  logfile name convert patterns and strings for
ONVERT              standby/clone db

MAX_DISPATCHERS  :  max number of dispatchers
MAX_DUMP_FILE_S  :  Maximum size (in bytes) of dump file
IZE

MAX_ENABLED_ROL  :  max number of roles a user can have enabled
ES

MAX_SHARED_SERV  :  max number of shared servers
ERS

MAX_STRING_SIZE  :  controls maximum size of VARCHAR2, NVARCHAR2, and RAW
types in SQL

MEMORY_MAX_TARG  :  Max size for Memory Target
ET

MEMORY_TARGET    :  Target size of Oracle SGA and PGA memory
NLS_CALENDAR     :  NLS calendar system name
NLS_COMP         :  NLS comparison
NLS_CURRENCY     :  NLS local currency symbol
NLS_DATE_FORMAT  :  NLS Oracle date format
NLS_DATE_LANGUA  :  NLS date language name
GE

NLS_DUAL_CURREN  :  Dual currency symbol
CY

NLS_ISO_CURRENC  :  NLS ISO currency territory name
Y

NLS_LANGUAGE     :  NLS language name
NLS_LENGTH_SEMA  :  create columns using byte or char semantics by default
NTICS

NLS_NCHAR_CONV_  :  NLS raise an exception instead of allowing implicit
EXCP                conversion

NLS_NUMERIC_CHA  :  NLS numeric characters
RACTERS

NLS_SORT         :  NLS linguistic definition name
NLS_TERRITORY    :  NLS territory name
NLS_TIMESTAMP_F  :  time stamp format
ORMAT

NLS_TIMESTAMP_T  :  timestamp with timezone format
Z_FORMAT

NLS_TIME_FORMAT  :  time format
NLS_TIME_TZ_FOR  :  time with timezone format
MAT

NONCDB_COMPATIB  :  Non-CDB Compatible
LE

O7_DICTIONARY_A  :  Version 7 Dictionary Accessibility Support
CCESSIBILITY

OBJECT_CACHE_MA  :  percentage of maximum size over optimal of the user
X_SIZE_PERCENT      session’s object cache

OBJECT_CACHE_OP  :  optimal size of the user session’s object cache in
TIMAL_SIZE          bytes

OLAP_PAGE_POOL_  :  size of the olap page pool in bytes
SIZE

OPEN_CURSORS     :  max # cursors per session
OPEN_LINKS       :  max # open links per session
OPEN_LINKS_PER_  :  max # open links per instance
INSTANCE

OPTIMIZER_ADAPT  :  controls adaptive features
IVE_FEATURES

OPTIMIZER_ADAPT  :  use reporting-only mode for adaptive optimizations
IVE_REPORTING_O
NLY

OPTIMIZER_CAPTU  :  automatic capture of SQL plan baselines for repeatable
RE_SQL_PLAN_BAS     statements
ELINES

OPTIMIZER_DYNAM  :  optimizer dynamic sampling
IC_SAMPLING

OPTIMIZER_FEATU  :  optimizer plan compatibility parameter
RES_ENABLE

OPTIMIZER_INDEX  :  optimizer percent index caching
_CACHING

OPTIMIZER_INDEX  :  optimizer index cost adjustment
_COST_ADJ

OPTIMIZER_MODE   :  optimizer mode
OPTIMIZER_SECUR  :  optimizer secure view merging and predicate
E_VIEW_MERGING      pushdown/movearound

OPTIMIZER_USE_I  :  Usage of invisible indexes (TRUE/FALSE)
NVISIBLE_INDEXE
S

OPTIMIZER_USE_P  :  Control whether to use optimizer pending statistics
ENDING_STATISTI
CS

OPTIMIZER_USE_S  :  use of SQL plan baselines for captured sql statements
QL_PLAN_BASELIN
ES

OS_AUTHENT_PREF  :  prefix for auto-logon accounts
IX

OS_ROLES         :  retrieve roles from the operating system
PARALLEL_ADAPTI  :  enable adaptive setting of degree for multiple user
VE_MULTI_USER       streams

PARALLEL_AUTOMA  :  enable intelligent defaults for parallel execution
TIC_TUNING          parameters

PARALLEL_DEGREE  :  adjust the computed degree in percentage
_LEVEL

PARALLEL_DEGREE  :  limit placed on degree of parallelism
_LIMIT

PARALLEL_DEGREE  :  policy used to compute the degree of parallelism
_POLICY             (MANUAL/LIMITED/AUTO/ADAPTIVE)

PARALLEL_EXECUT  :  message buffer size for parallel execution
ION_MESSAGE_SIZ
E

PARALLEL_FAULT_  :  enables or disables fault-tolerance for parallel
TOLERANCE_ENABL     statement
ED

PARALLEL_FORCE_  :  force single instance execution
LOCAL

PARALLEL_INSTAN  :  instance group to use for all parallel operations
CE_GROUP

PARALLEL_IO_CAP  :  enable capping DOP by IO bandwidth
_ENABLED

PARALLEL_MAX_SE  :  maximum parallel query servers per instance
RVERS

PARALLEL_MIN_PE  :  minimum percent of threads required for parallel query
RCENT

PARALLEL_MIN_SE  :  minimum parallel query servers per instance
RVERS

PARALLEL_MIN_TI  :  threshold above which a plan is a candidate for
ME_THRESHOLD        parallelization (in seconds)

PARALLEL_SERVER  :  if TRUE startup in parallel server mode
PARALLEL_SERVER  :  instance target in terms of number of parallel servers
S_TARGET

PARALLEL_SERVER  :  number of instances to use for sizing OPS SGA
_INSTANCES          structures

PARALLEL_THREAD  :  number of parallel execution threads per CPU
S_PER_CPU

PDB_FILE_NAME_C  :  PDB file name convert patterns and strings for create
ONVERT              cdb/pdb

PERMIT_92_WRAP_  :  allow 9.2 or older wrap format in PL/SQL
FORMAT

PGA_AGGREGATE_L  :  limit of aggregate PGA memory consumed by the instance
IMIT

PGA_AGGREGATE_T  :  Target size for the aggregate PGA memory consumed by
ARGET               the instance

PLSCOPE_SETTING  :  plscope_settings controls the compile time collection,
S                   cross reference, and storage of PL/SQL source code
identifier data

PLSQL_CCFLAGS    :  PL/SQL ccflags
PLSQL_CODE_TYPE  :  PL/SQL code-type
PLSQL_DEBUG      :  PL/SQL debug
PLSQL_OPTIMIZE_  :  PL/SQL optimize level
LEVEL

PLSQL_V2_COMPAT  :  PL/SQL version 2.x compatibility flag
IBILITY

PLSQL_WARNINGS   :  PL/SQL compiler warnings settings
PRE_PAGE_SGA     :  pre-page sga for process
PROCESSES        :  user processes
PROCESSOR_GROUP  :  Name of the processor group that this instance should
_NAME               run in.

QUERY_REWRITE_E  :  allow rewrite of queries using materialized views if
NABLED              enabled

QUERY_REWRITE_I  :  perform rewrite using materialized views with desired
NTEGRITY            integrity

RDBMS_SERVER_DN  :  RDBMS’s Distinguished Name
READ_ONLY_OPEN_  :  if TRUE delay opening of read only files until first
DELAYED             access

RECOVERY_PARALL  :  number of server processes to use for parallel recovery
ELISM

RECYCLEBIN       :  recyclebin processing
REDO_TRANSPORT_  :  Data Guard transport user when using password file
USER

REMOTE_DEPENDEN  :  remote-procedure-call dependencies mode parameter
CIES_MODE

REMOTE_LISTENER  :  remote listener
REMOTE_LOGIN_PA  :  password file usage parameter
SSWORDFILE

REMOTE_OS_AUTHE  :  allow non-secure remote clients to use auto-logon
NT                  accounts

REMOTE_OS_ROLES  :  allow non-secure remote clients to use os roles
REPLICATION_DEP  :  tracking dependency for Replication parallel
ENDENCY_TRACKIN     propagation
G

RESOURCE_LIMIT   :  master switch for resource limit
RESOURCE_MANAGE  :  Resource Manager CPU allocation
R_CPU_ALLOCATIO
N

RESOURCE_MANAGE  :  resource mgr top plan
R_PLAN

RESULT_CACHE_MA  :  maximum result size as percent of cache size
X_RESULT

RESULT_CACHE_MA  :  maximum amount of memory to be used by the cache
X_SIZE

RESULT_CACHE_MO  :  result cache operator usage mode
DE

RESULT_CACHE_RE  :  maximum life time (min) for any result using a remote
MOTE_EXPIRATION     object

RESUMABLE_TIMEO  :  set resumable_timeout
UT

ROLLBACK_SEGMEN  :  undo segment list
TS

SEC_CASE_SENSIT  :  case sensitive password enabled for logon
IVE_LOGON

SEC_MAX_FAILED_  :  maximum number of failed login attempts on a connection
LOGIN_ATTEMPTS

SEC_PROTOCOL_ER  :  TTC protocol error continue action
ROR_FURTHER_ACT
ION

SEC_PROTOCOL_ER  :  TTC protocol error action
ROR_TRACE_ACTIO
N

SEC_RETURN_SERV  :  whether the server retruns the complete version
ER_RELEASE_BANN     information
ER

SERIAL_REUSE     :  reuse the frame segments
SERVICE_NAMES    :  service names supported by the instance
SESSIONS         :  user and system sessions
SESSION_CACHED_  :  Number of cursors to cache in a session.
CURSORS

SESSION_MAX_OPE  :  maximum number of open files allowed per session
N_FILES

SGA_MAX_SIZE     :  max total SGA size
SGA_TARGET       :  Target size of SGA
SHADOW_CORE_DUM  :  Core Size for Shadow Processes
P

SHARED_MEMORY_A  :  SGA starting address (low order 32-bits on 64-bit
DDRESS              platforms)

SHARED_POOL_RES  :  size in bytes of reserved area of shared pool
ERVED_SIZE

SHARED_POOL_SIZ  :  size in bytes of shared pool
E

SHARED_SERVERS   :  number of shared servers to start up
SHARED_SERVER_S  :  max number of shared server sessions
ESSIONS

SKIP_UNUSABLE_I  :  skip unusable indexes if set to TRUE
NDEXES

SMTP_OUT_SERVER  :  utl_smtp server and port configuration parameter
SORT_AREA_RETAI  :  size of in-memory sort work area retained between fetch
NED_SIZE            calls

SORT_AREA_SIZE   :  size of in-memory sort work area
SPATIAL_VECTOR_  :  enable spatial vector acceleration
ACCELERATION

SPFILE           :  server parameter file
SQL92_SECURITY   :  require select privilege for searched update/delete
SQLTUNE_CATEGOR  :  Category qualifier for applying hintsets
Y

SQL_TRACE        :  enable SQL trace
STANDBY_ARCHIVE  :  standby database archivelog destination text string
_DEST

STANDBY_FILE_MA  :  if auto then files are created/dropped automatically on
NAGEMENT            standby

STAR_TRANSFORMA  :  enable the use of star transformation
TION_ENABLED

STATISTICS_LEVE  :  statistics level
L

STREAMS_POOL_SI  :  size in bytes of the streams pool
ZE

TAPE_ASYNCH_IO   :  Use asynch I/O requests for tape devices
TEMP_UNDO_ENABL  :  is temporary undo enabled
ED

THREAD           :  Redo thread to mount
THREADED_EXECUT  :  Threaded Execution Mode
ION

TIMED_OS_STATIS  :  internal os statistic gathering interval in seconds
TICS

TIMED_STATISTIC  :  maintain internal timing statistics
S

TRACEFILE_IDENT  :  trace file custom identifier
IFIER

TRACE_ENABLED    :  enable in memory tracing
TRANSACTIONS     :  max. number of concurrent active transactions
TRANSACTIONS_PE  :  number of active transactions per rollback segment
R_ROLLBACK_SEGM
ENT

UNDO_MANAGEMENT  :  instance runs in SMU mode if TRUE, else in RBU mode
UNDO_RETENTION   :  undo retention in seconds
UNDO_TABLESPACE  :  use/switch undo tablespace
UNIFIED_AUDIT_S  :  Size of Unified audit SGA Queue
GA_QUEUE_SIZE

USER_DUMP_DEST   :  User process dump directory
USE_DEDICATED_B  :  Use dedicated connection broker
ROKER

USE_INDIRECT_DA  :  Enable indirect data buffers (very large SGA on 32-bit
TA_BUFFERS          platforms)

USE_LARGE_PAGES  :  Use large pages if available (TRUE/FALSE/ONLY)
UTL_FILE_DIR     :  utl_file accessible directories list
WORKAREA_SIZE_P  :  policy used to size SQL working areas (MANUAL/AUTO)
OLICY

XML_DB_EVENTS    :  are XML DB events enabled

367 rows selected.

References: Oracle Documentation

——————————————————————–

Related Links:

Home

Database Index
Oracle 12c Index

12c: SQL Management Base Stores Plan Rows too
New SPfile Parameters In Oracle Database 12.2.0.1
Parameters Deprecated  in 12c
Undocumented Parameters in 12c

 

——————-

 

DATABASE 12c INDEX

Home

12c : Access EM Express for CDB / PDB / Non-CDB
12c: Access Objects Of A Common User Non-existent In Root
12c: Clone An Existing PDB as Non-Sys User
12c : Connecting to CDB/PDB – Set Container vs Connect
12c : Connecting To PDB’s With Same Name
12c: DDL Log Does Not Identify The Source PDB
12c: Display CDB/PDB Name In SQL Prompt
12c: Does PDB have an SPfile?
12c: In-database Archiving
12c: Improve Backup Performance Using In-database Archiving
12c: Optimizer_dynamic_sampling = 11
12c: PDB cannot share CDB’s temporary tablespace
12c: Enhancements To Partition Exchange Load
12c: Performance Issue With In-database Archiving
12c: Plug in 12c Non-CDB As PDB
12c: Solution To Performance Issue With In-database Archiving
12c: SQL Management Base Stores Plan Rows too
12c: Transportable Database
12c: Transport Database Over Network
12c: Unable To Access EM Express For Non-CDB
12c: USE_SID_AS_SERVICE_listener_name
Documented Parameters in 12c
Duplicate Point-In-Time Recovered PDB using Backup
ERROR: NMO not setuid-root (Unix-only)
Issues With Oracle Multitenant Application Containers
Map OS Groups To Administrative Privileges After Installation
Oracle 12.1.0.2c : Hot cloning of Non-Container Database
Oracle 12.1.0.2c: Hot cloning of Pluggable Databases
ORA-65023: active transaction exists in container CDB$ROOT
Oracle Database 12.1.0.2c: Automatic Big Table Cache
Oracle Database 12.2.0.1 – Application PDB unable to sync
Oracle Multitenant Application Containers – Part I (Introduction)
Oracle Multitenant Application Containers – Part II (Create Application Container)
Oracle Multitenant Application Containers – Part III ( Data Sharing )
Parameters Deprecated in 12c
Undocumented Parameters In 12c

 

UNDOCUMENTED PARAMETERS IN 12c

In this post, I will give a list of all undocumented parameters in Oracle 12.1.0.1c. Here is a query to see all the parameters (documented and undocumented) which contain the string you enter when prompted:

– Enter name of the parameter when prompted

SET linesize 235
col Parameter FOR a50
col SESSION FOR a28
col Instance FOR a55
col S FOR a1
col I FOR a1
col D FOR a1
col Description FOR a90

SELECT 
  a.ksppinm  "Parameter",
  decode(p.isses_modifiable,'FALSE',NULL,NULL,NULL,b.ksppstvl) "Session",
  c.ksppstvl "Instance",
  decode(p.isses_modifiable,'FALSE','F','TRUE','T') "S",
  decode(p.issys_modifiable,'FALSE','F','TRUE','T','IMMEDIATE','I','DEFERRED','D') "I",
  decode(p.isdefault,'FALSE','F','TRUE','T') "D",
  a.ksppdesc "Description"
FROM x$ksppi a, x$ksppcv b, x$ksppsv c, v$parameter p
WHERE a.indx = b.indx AND a.indx = c.indx
  AND p.name(+) = a.ksppinm
  AND UPPER(a.ksppinm) LIKE UPPER('%&1%')
ORDER BY a.ksppinm;

Enter value for 1:

Here is the list of all (2984) undocumented parameters in Oracle 12.1.0.1c  :

SQL>     col parameter for a15 word_wrapped
col Description for a55 word_wrapped
set pagesize 50000
set linesize 80
select upper(KSPPINM) parameter,   ' : ',
KSPPDESC Description from x$ksppi
where substr(ksppinm,1,1) = '_'order by 1,3;

PARAMETER                     DESCRIPTION
—————                        ——————————————————-
_4030_DUMP_BITV  :  bitvec to specify dumps prior to 4030 error
EC

_4031_DUMP_BITV  :  bitvec to specify dumps prior to 4031 error
EC

_4031_DUMP_INTE  :  Dump 4031 error once for each n-second interval
RVAL

_4031_MAX_DUMPS  :  Maximum number of 4031 dumps for this process
_4031_SGA_DUMP_  :  Dump 4031 SGA heapdump error once for each n-second
INTERVAL            interval

_4031_SGA_MAX_D  :  Maximum number of SGA heapdumps
UMPS

_ABORT_ON_MRP_C  :  abort database instance when MRP crashes
RASH

_ABORT_RECOVERY  :  if TRUE, abort recovery on join reconfigurations
_ON_JOIN

_ACCEPT_VERSION  :  List of parameters for rolling operation
S

_ACTIVE_INSTANC  :  number of active instances in the cluster database
E_COUNT

_ACTIVE_SESSION  :  active session idle limit
_IDLE_LIMIT

_ACTIVE_SESSION  :  active session legacy behavior
_LEGACY_BEHAVIO
R

_ACTIVE_STANDBY  :  if TRUE optimize dlm reconfiguration for active/standby
_FAST_RECONFIGU     OPS
RATION

_AC_ENABLE_DSCN  :  Enable Dependent Commit SCN tracking
_IN_RAC

_ADAPTIVE_DIREC  :  Adaptive Direct Read
T_READ

_ADAPTIVE_DIREC  :  Adaptive Direct Write
T_WRITE

_ADAPTIVE_FETCH  :  enable/disable adaptive fetch in parallel group by
_ENABLED

_ADAPTIVE_LOG_F  :  Threshold for frequent log file sync mode switches (per
ILE_SYNC_HIGH_S     minute)
WITCH_FREQ_THRE
SHOLD

_ADAPTIVE_LOG_F  :  Polling interval selection bias (conservative=0,
ILE_SYNC_POLL_A     aggressive=100)
GGRESSIVENESS

_ADAPTIVE_LOG_F  :  Window (in seconds) for measuring average scheduling
ILE_SYNC_SCHED_     delay
DELAY_WINDOW

_ADAPTIVE_LOG_F  :  Ratio of redo synch time to expected poll time as a
ILE_SYNC_USE_PO     percentage
LLING_THRESHOLD

_ADAPTIVE_LOG_F  :  Percentage of foreground load from when post/wait was
ILE_SYNC_USE_PO     last used
STWAIT_THRESHOL
D

_ADAPTIVE_SCALA  :  Percentage of overlap across multiple outstanding
BLE_LOG_WRITER_     writes
DISABLE_WORKER_
THRESHOLD

_ADAPTIVE_SCALA  :  Increase in redo generation rate as a percentage
BLE_LOG_WRITER_
ENABLE_WORKER_T
HRESHOLD

_ADAPTIVE_WINDO  :  enable/disable adaptive window consolidator PX plan
W_CONSOLIDATOR_
ENABLED

_ADDM_AUTO_ENAB  :  governs whether ADDM gets run automatically after every
LE                  AWR snapshot

_ADDM_SKIPRULES  :  comma-separated list of ADDM nodes to skip
_ADDM_VERSION_C  :  governs whether ADDM checks the input AWR snapshot
HECK                version

_ADD_COL_OPTIM_  :  Allows new add column optimization
ENABLED

_ADD_NULLABLE_C  :  Allows add of a nullable column with default
OLUMN_WITH_DEFA     optimization
ULT_OPTIM

_ADD_STALE_MV_T  :  add stale mv to dependency list
O_DEPENDENCY_LI
ST

_ADD_TRIM_FOR_N  :  add trimming for fixed char semantics
LSSORT

_ADG_BUFFER_WAI  :  Active Dataguard buffer wait time in cs
T_TIMEOUT

_ADG_INSTANCE_R  :  enable ADG instance recovery
ECOVERY

_ADJUST_LITERAL  :  If TRUE, we will adjust the SQL/PLUS output
_REPLACEMENT

_ADR_MIGRATE_RU  :  Enable/disable ADR Migrate Runonce action
NONCE

_ADVANCED_INDEX  :  advanced index compression options
_COMPRESSION_OP
TIONS

_ADVANCED_INDEX  :  advanced index compression options2
_COMPRESSION_OP
TIONS_VALUE

_ADVANCED_INDEX  :  advanced index compression trace
_COMPRESSION_TR
ACE

_AFFINITY_ON     :  enable/disable affinity at run time
_AGED_OUT_CURSO  :  number of seconds an aged out session cached cursor
R_CACHE_TIME        stay in cache

_AGGREGATION_OP  :  settings for aggregation optimizations
TIMIZATION_SETT
INGS

_AIOWAIT_TIMEOU  :  Number of aiowait timeouts before error is reported
TS

_ALERT_EXPIRATI  :  seconds before an alert message is moved to exception
ON                  queue

_ALERT_MESSAGE_  :  Enable Alert Message Cleanup
CLEANUP

_ALERT_MESSAGE_  :  Enable Alert Message Purge
PURGE

_ALERT_POST_BAC  :  Enable Background Alert Posting
KGROUND

_ALLOCATE_CREAT  :  should files be examined in creation order during
ION_ORDER           allocation

_ALLOCATION_UPD  :  interval at which successful search in L1 should be
ATE_INTERVAL        updated

_ALLOW_CELL_SMA  :  Allow checking smart_scan_capable Attr
RT_SCAN_ATTR

_ALLOW_COMMUTAT  :  allow for commutativity of +, * when comparing
IVITY               expressions

_ALLOW_COMPATIB  :  allow advancing DB compatibility with guaranteed
ILITY_ADV_W_GRP     restore points

_ALLOW_DROP_SNA  :  Allow dropping snapshot standby guaranteed restore
PSHOT_STANDBY_G     point
RSP

_ALLOW_DROP_TS_  :  Allow drop Tablespace with guaranteed restore points
WITH_GRP

_ALLOW_ERROR_SI  :  Allow error simulation for testing
MULATION

_ALLOW_FILE_1_O  :  don’t signal ORA-1245 due to file 1 being offline
FFLINE_ERROR_12
45

_ALLOW_LEVEL_WI  :  allow level without connect by
THOUT_CONNECT_B
Y

_ALLOW_READ_ONL  :  allow read-only open even if database is corrupt
Y_CORRUPTION

_ALLOW_RESETLOG  :  allow resetlogs even if it will cause corruption
S_CORRUPTION

_ALLOW_TERMINAL  :  Finish terminal recovery even if it may cause
_RECOVERY_CORRU     corruption
PTION

_ALL_SHARED_DBL  :  treat all dblinks as shared
INKS

_ALTERNATE_IOT_  :  enable alternate index-organized table leaf-block
LEAF_BLOCK_SPLI     split-points
T_POINTS

_ALTER_COMMON_U  :  allow local user to create objects in common schema
SER_SCHEMA

_ALWAYS_ANTI_JO  :  always use this method for anti-join when possible
IN

_ALWAYS_SEMI_JO  :  always use this method for semi-join when possible
IN

_ALWAYS_STAR_TR  :  always favor use of star transformation
ANSFORMATION

_AM_CONTAINER_F  :  allocation unit size for non-ASM containers
ILESYSTEM_AUSIZ
E

_AM_MAX_CONTAIN  :  maximum number of containers
ERS

_AM_MAX_GROUPS   :  maximum number of containers
_AM_MAX_SEG_BYT  :  maximum number of bytes per array segment
ES

_AM_TIMEOUTS_EN  :  enable timeouts
ABLED

_AM_TRACE_BUFFE  :  size of per-process I/O trace buffer
R_SIZE

_AND_PRUNING_EN  :  allow partition pruning based on multiple mechanisms
ABLED

_APPQOS_CDB_SET  :  QoSM CDB Performance Class Setting
TING

_APPQOS_PO_MULT  :  Multiplier for PC performance objective value
IPLIER

_APPQOS_QT       :  System Queue time retrieval interval
_AQSHARDED_CACH  :  Limit for cached enqueue/dequeue operations
E_LIMIT

_AQ_DISABLE_X    :  AQ – Disable new cross processes at an instance
_AQ_DQ_SESSIONS  :  Deq session count
_AQ_EQ_SESSIONS  :  Enq session count
_AQ_INIT_SHARDS  :  Minimum enqueue shards per queue at an instance
_AQ_MAX_SCAN_DE  :  Maximum allowable scan delay for AQ indexes and IOTs
LAY

_AQ_PRECRT_PART  :  Precreate Partitions
ITIONS

_AQ_PT_PROCESSE  :  Partition background processes
S

_AQ_STOP_BACKGR  :  Stop all AQ background processes
OUNDS

_AQ_SUBSHARD_SI  :  Sub Shard Size
ZE

_AQ_TM_DEQCOUNT  :  dequeue count interval for Time Managers to cleanup DEQ
INTERVAL            IOT BLOCKS

_AQ_TM_SCANLIMI  :  scan limit for Time Managers to clean up IOT
T

_AQ_TM_STATISTI  :  statistics collection window duration
CS_DURATION

_ARCH_COMPRESSI  :  archive compression enabled
ON

_ARCH_COMPRESS_  :  enable/disable row checksums for archive compressed
CHECKSUMS           blocks

_ARCH_COMP_DBG_  :  archive compression scan debug
SCAN

_ARCH_COMP_DEC_  :  decompress archive compression blocks for checking and
BLOCK_CHECK_DUM     dumping
P

_ARCH_IO_SLAVES  :  ARCH I/O slaves
_ARCH_SIM_MODE   :  Change behavior of local archiving
_ARRAY_CDB_VIEW  :  array mode enabled for CDB views
_ENABLED

_ARRAY_UPDATE_V  :  Enable array update vector read
ECTOR_READ_ENAB
LED

_ASH_COMPRESSIO  :  To enable or disable string compression in ASH
N_ENABLE

_ASH_DISK_FILTE  :  Ratio of the number of in-memory samples to the number
R_RATIO             of samples actually written to disk

_ASH_DISK_WRITE  :  To enable or disable Active Session History flushing
_ENABLE

_ASH_DUMMY_TEST  :  Oracle internal dummy ASH parameter used ONLY for
_PARAM              testing!

_ASH_EFLUSH_TRI  :  The percentage above which if the in-memory ASH is full
GGER                the emergency flusher will be triggered

_ASH_ENABLE      :  To enable or disable Active Session sampling and
flushing

_ASH_MIN_MMNL_D  :  Minimum Time interval passed to consider MMNL Dump
UMP

_ASH_SAMPLE_ALL  :  To enable or disable sampling every connected session
including ones waiting for idle waits

_ASH_SAMPLING_I  :  Time interval between two successive Active Session
NTERVAL             samples in millisecs

_ASH_SIZE        :  To set the size of the in-memory Active Session History
buffers

_ASMSID          :  ASM instance id
_ASM_ACCESS      :  ASM File access mechanism
_ASM_ACD_CHUNKS  :  initial ACD chunks created
_ASM_ADMIN_WITH  :  Does the sysdba role have administrative privileges on
_SYSDBA             ASM?

_ASM_ALLOWDEGEN  :  Allow force-mounts of DGs w/o proper quorum
ERATEMOUNTS

_ASM_ALLOW_APPL  :  Allow DROP DISK/FAILUREGROUP NOFORCE on ASM Appliances
IANCE_DROPDISK_
NOFORCE

_ASM_ALLOW_LVM_  :  Enable disk resilvering for external redundancy
RESILVERING

_ASM_ALLOW_ONLY  :  Discovery only raw devices
_RAW_DISKS

_ASM_ALLOW_SYST  :  if system alias renaming is allowed
EM_ALIAS_RENAME

_ASM_ALLOW_UNSA  :  attempt unsafe reconnect to ASM
FE_RECONNECT

_ASM_APPLIANCE_  :  Appliance configuration file name
CONFIG_FILE

_ASM_AUSIZE      :  allocation unit size
_ASM_AUTOMATIC_  :  automatically rebalance free space across zones
REZONE

_ASM_AVOID_PST_  :  Avoid PST Scans
SCANS

_ASM_BLKSIZE     :  metadata block size
_ASM_CHECK_FOR_  :  check for misbehaving CF-holding clients
MISBEHAVING_CF_
CLIENTS

_ASM_COMPATIBIL  :  default ASM compatibility level
ITY

_ASM_DBA_BATCH   :  ASM Disk Based Allocation Max Batch Size
_ASM_DBA_SPCCHK  :  ASM Disk Based Allocation Space Check Threshold
_THLD

_ASM_DBA_THRESH  :  ASM Disk Based Allocation Threshold
OLD

_ASM_DBMSDG_NOH  :  dbms_diskgroup.checkfile does not check block headers
DRCHK

_ASM_DIAG_DEAD_  :  diagnostics for dead clients
CLIENTS

_ASM_DIRECT_CON  :  Expire time for idle direct connection to ASM instance
_EXPIRE_TIME

_ASM_DISABLE_AM  :  Disable AMDU dump
DU_DUMP

_ASM_DISABLE_AS  :  disable async intra-instance messaging
YNC_MSGS

_ASM_DISABLE_MU  :  Disable checking for multiple ASM instances on a given
LTIPLE_INSTANCE     node
_CHECK

_ASM_DISABLE_PR  :  disable profile query for discovery
OFILEDISCOVERY

_ASM_DISABLE_SM  :  Do Not create smr
R_CREATION

_ASM_DISABLE_UF  :  disable ufg member kill
GMEMBERKILL

_ASM_DISABLE_UF  :  disable terminated umbilicus diagnostic
G_DUMP

_ASM_DISKERR_TR  :  Number of read/write errors per disk a process can
ACES                trace

_ASM_DISKGROUPS  :  disk groups to mount automatically set 2
2

_ASM_DISKGROUPS  :  disk groups to mount automatically set 3
3

_ASM_DISKGROUPS  :  disk groups to mount automatically set 4
4

_ASM_DISK_REPAI  :  seconds to wait before dropping a failing disk
R_TIME

_ASM_EMULATE_NF  :  Emulate NFS disk test event
S_DISK

_ASM_EMULMAX     :  max number of concurrent disks to emulate I  /O errors
_ASM_EMULTIMEOU  :  timeout before emulation begins (in 3s ticks)
T

_ASM_ENABLE_XRO  :  Enable XROV capability
V

_ASM_EVENREAD    :  ASM Even Read level
_ASM_EVENREAD_A  :  ASM Even Read Alpha
LPHA

_ASM_EVENREAD_A  :  ASM Even Read Second Alpha
LPHA2

_ASM_EVENREAD_F  :  ASM Even Read Fast Start Threshold
ASTSTART

_ASM_FAIL_RANDO  :  Randomly fail some RX enqueue gets
M_RX

_ASM_FOB_TAC_FR  :  Timeout frequency for FOB cleanup
EQUENCY

_ASM_FORCE_QUIE  :  Force diskgroup quiescing
SCE

_ASM_GLOBAL_DUM  :  System state dump level for ASM asserts
P_LEVEL

_ASM_HBEATIOWAI  :  number of secs to wait for PST Async Hbeat IO return
T

_ASM_HBEATWAITQ  :  quantum used to compute time-to-wait for a PST Hbeat
UANTUM              check

_ASM_HEALTHCHEC  :  seconds until health check takes action
K_TIMEOUT

_ASM_IMBALANCE_  :  hundredths of a percentage of inter-disk imbalance to
TOLERANCE           tolerate

_ASM_INSTLOCK_Q  :  ASM Instance Lock Quota
UOTA

_ASM_IOSTAT_LAT  :  ASM I/O statistics latch count
CH_COUNT

_ASM_KFDPEVENT   :  KFDP event
_ASM_KILL_UNRES  :  kill unresponsive ASM clients
PONSIVE_CLIENTS

_ASM_LIBRARIES   :  library search order for discovery
_ASM_LOG_SCALE_  :  Rebalance power uses logarithmic scale
REBALANCE

_ASM_LSOD_BUCKE  :  ASM lsod bucket size
T_SIZE

_ASM_MAXIO       :  Maximum size of individual I/O request
_ASM_MAX_COD_ST  :  maximum number of COD strides
RIDES

_ASM_MAX_REDO_B  :  asm maximum redo buffer size
UFFER_SIZE

_ASM_NETWORKS    :  ASM network subnet addresses
_ASM_NETWORK_TI  :  Keepalive timeout for ASM network connections
MEOUT

_ASM_NODEKILL_E  :  secs until escalating to nodekill if fence incomplete
SCALATE_TIME

_ASM_NOEVENREAD  :  List of disk groups having even read disabled
_DISKGROUPS

_ASM_PARTNER_TA  :  target maximum number of disk partners for repartnering
RGET_DISK_PART

_ASM_PARTNER_TA  :  target maximum number of failure group relationships
RGET_FG_REL         for repartnering

_ASM_PRIMARY_LO  :  Number of cycles/extents to load for non-mirrored files
AD

_ASM_PRIMARY_LO  :  True if primary load is in cycles, false if extent
AD_CYCLES           counts

_ASM_PROCS_TRAC  :  Number of processes allowed to trace a disk failure
E_DISKERR

_ASM_PROXY_STAR  :  Maximum time to wait for ASM proxy connection
TWAIT

_ASM_RANDOM_ZON  :  Random zones for new files
E

_ASM_REBALANCE_  :  maximum rebalance work unit
PLAN_SIZE

_ASM_REBALANCE_  :  number of out of space errors allowed before aborting
SPACE_ERRORS        rebalance

_ASM_REMOTE_CLI  :  timeout before killing disconnected remote clients
ENT_TIMEOUT

_ASM_REPAIRQUAN  :  quantum (in 3s) used to compute elapsed time for disk
TUM                 drop

_ASM_RESERVE_SL  :  reserve ASM slaves for CF txns
AVES

_ASM_RESYNCCKPT  :  number of extents to resync before flushing checkpoint
_ASM_ROOT_DIREC  :  ASM default root directory
TORY

_ASM_RUNTIME_CA  :  runtime capability for volume support returns supported
PABILITY_VOLUME
_SUPPORT

_ASM_SCRUB_LIMI  :  ASM disk scrubbing power
T

_ASM_SECONDARY_  :  Number of cycles/extents to load for mirrored files
LOAD

_ASM_SECONDARY_  :  True if secondary load is in cycles, false if extent
LOAD_CYCLES         counts

_ASM_SERIALIZE_  :  Serialize volume rebalance
VOLUME_REBALANC
E

_ASM_SHADOW_CYC  :  Inverse shadow cycle requirement
LE

_ASM_SKIP_DISKV  :  skip client side discovery for disk revalidate
AL_CHECK

_ASM_SKIP_RENAM  :  skip the checking of the clients for s/w compatibility
E_CHECK             for rename

_ASM_SKIP_RESIZ  :  skip the checking of the clients for s/w compatibility
E_CHECK             for resize

_ASM_STORAGEMAY  :  PST Split Possible
SPLIT

_ASM_STRIPESIZE  :  ASM file stripe size
_ASM_STRIPEWIDT  :  ASM file stripe width
H

_ASM_SYNC_REBAL  :  Rebalance uses sync I/O
ANCE

_ASM_TRACE_LIMI  :  Time-out in milliseconds to reset the number of traces
T_TIMEOUT           per disk and the number of processes allowed to trace

_ASM_USD_BATCH   :  ASM USD Update Max Batch Size
_ASM_WAIT_TIME   :  Max/imum time to wait before asmb exits
_ASSM_DEFAULT    :  ASSM default
_ASSM_FORCE_FET  :  enable metadata block fetching in ASSM segment scan
CHMETA

_ASSM_HIGH_GSP_  :  Number of blocks rejected before growing segment
THRESHOLD

_ASSM_LOW_GSP_T  :  Number of blocks rejected before collecting stats
HRESHOLD

_ASYNC_RECOVERY  :  if TRUE, issue recovery claims asynchronously
_CLAIMS

_ASYNC_RECOVERY  :  if TRUE, issue recovery reads asynchronously
_READS

_ASYNC_TS_THRES  :  check tablespace thresholds asynchronously
HOLD

_AUTOMATIC_MAIN  :  Enable AUTOTASK Test Mode
TENANCE_TEST

_AUTOMEMORY_BRO  :  memory broker statistics gathering interval for auto
KER_INTERVAL        memory

_AUTOTASK_MAX_W  :  Maximum Logical Maintenance Window Length in minutes
INDOW

_AUTOTASK_MIN_W  :  Minimum Maintenance Window Length in minutes
INDOW

_AUTOTASK_TEST_  :  Name of current Autotask Test (or test step)
NAME

_AUTOTUNE_GTX_I  :  idle time to trigger auto-shutdown a gtx background
DLE_TIME            process

_AUTOTUNE_GTX_I  :  interval to autotune global transaction background
NTERVAL             processes

_AUTOTUNE_GTX_T  :  auto-tune threshold for degree of global transaction
HRESHOLD            concurrency

_AUTO_ASSIGN_CG  :  auto assign CGs for sessions
_FOR_SESSIONS

_AUTO_BMR        :  enable/disable Auto BMR
_AUTO_BMR_BG_TI  :  Auto BMR Process Run Time
ME

_AUTO_BMR_FC_TI  :  Auto BMR Flood Control Time
ME

_AUTO_BMR_PUB_T  :  Auto BMR Publish Timeout
IMEOUT

_AUTO_BMR_REQ_T  :  Auto BMR Requester Timeout
IMEOUT

_AUTO_BMR_SESS_  :  Auto BMR Request Session Threshold
THRESHOLD

_AUTO_BMR_SYS_T  :  Auto BMR Request System Threshold
HRESHOLD

_AUTO_MANAGE_EN  :  perodically check for OFFLINE disks and attempt to
ABLE_OFFLINE_CH     ONLINE
ECK

_AUTO_MANAGE_EX  :  Automate Exadata disk management
ADATA_DISKS

_AUTO_MANAGE_IN  :  TEST: Set infrequent timeout action to run at this
FREQ_TOUT           interval, unit is seconds

_AUTO_MANAGE_IO  :  oss_ioctl buffer size, to read and respond to cell
CTL_BUFSZ           notifications

_AUTO_MANAGE_MA  :  Max. attempts to auto ONLINE an ASM disk
X_ONLINE_TRIES

_AUTO_MANAGE_NU  :  Max. number of out-standing msgs in the KXDAM pipe
M_PIPE_MSGS

_AUTO_MANAGE_NU  :  Num. tries before giving up on a automation operation
M_TRIES

_AUTO_MANAGE_ON  :  Allow Max. attempts to auto ONLINE an ASM disk after
LINE_TRIES_EXPI     lapsing this time (unit in seconds)
RE_TIME

_AUX_DFC_KEEP_T  :  auxiliary datafile copy keep time in minutes
IME

_AVAILABLE_CORE  :  number of cores for this instance
_COUNT

_AVOID_PREPARE   :  if TRUE, do not prepare a buffer when the master is
local

_AWR_CDBPERF_TH  :  Setting for AWR CDBPERF Threshold
RESHOLD

_AWR_CORRUPT_MO  :  AWR Corrupt Mode
DE

_AWR_DISABLED_F  :  Disable flushing of specified AWR tables
LUSH_TABLES

_AWR_FLUSH_THRE  :  Enable/Disable Flushing AWR Threshold Metrics
SHOLD_METRICS

_AWR_FLUSH_WORK  :  Enable/Disable Flushing AWR Workload Metrics
LOAD_METRICS

_AWR_MMON_CPUUS  :  Enable/disable AWR MMON CPU Usage Tracking
AGE

_AWR_MMON_DEEP_  :  Allows deep purge to purge AWR data for all expired
PURGE_ALL_EXPIR     snapshots
ED

_AWR_MMON_DEEP_  :  Set extent of rows to check each deep purge run
PURGE_EXTENT

_AWR_MMON_DEEP_  :  Set interval for deep purge of AWR contents
PURGE_INTERVAL

_AWR_MMON_DEEP_  :  Set max number of rows per table to delete each deep
PURGE_NUMROWS       purge run

_AWR_PDB_REGIST  :  Parameter to enable/disable AWR PDB Registration
RATION_ENABLED

_AWR_REMOTE_TAR  :  AWR Remote Target DBLink for Flushing
GET_DBLINK

_AWR_RESTRICT_M  :  AWR Restrict Mode
ODE

_AWR_SQL_CHILD_  :  Setting for AWR SQL Child Limit
LIMIT

_BACKUP_ALIGN_W  :  align backup write I/Os
RITE_IO

_BACKUP_AUTOMAT  :  automatic retry on backup write errors
IC_RETRY

_BACKUP_DISK_BU  :  number of buffers used for DISK channels
FCNT

_BACKUP_DISK_BU  :  size of buffers used for DISK channels
FSZ

_BACKUP_DISK_IO  :  BACKUP Disk I/O slaves
_SLAVES

_BACKUP_DYNAMIC  :  dynamically compute backup/restore buffer sizes
_BUFFERS

_BACKUP_ENCRYPT  :  specifies encryption block optimization mode
_OPT_MODE

_BACKUP_FILE_BU  :  number of buffers used for file access
FCNT

_BACKUP_FILE_BU  :  size of buffers used for file access
FSZ

_BACKUP_IO_POOL  :  memory to reserve from the large pool
_SIZE

_BACKUP_KGC_BLK  :  specifies buffer size to be used by HIGH compression
SIZ

_BACKUP_KGC_BUF  :  specifies buffer size to be used by BASIC compression
SZ

_BACKUP_KGC_MEM  :  specifies memory level for MEDIUM compression
LEVEL

_BACKUP_KGC_NIT  :  specifies number of iterations done by BASIC
ERS                 compression

_BACKUP_KGC_PER  :  specifies compression (performance) level for MEDIUM
FLEVEL              compression

_BACKUP_KGC_SCH  :  specifies compression scheme
EME

_BACKUP_KGC_TYP  :  specifies compression type used by kgc BASIC
E                   compression

_BACKUP_KGC_WIN  :  specifies window size for MEDIUM compression
DOWBITS

_BACKUP_KSFQ_BU  :  number of buffers used for backup/restore
FCNT

_BACKUP_KSFQ_BU  :  maximum amount of memory (in bytes) used for buffers
FMEM_MAX            for backup/restore

_BACKUP_KSFQ_BU  :  size of buffers used for backup/restore
FSZ

_BACKUP_LZO_SIZ  :  specifies buffer size for LOW compression
E

_BACKUP_MAX_GAP  :  largest gap in an incremental/optimized backup buffer,
_SIZE               in bytes

_BACKUP_MIN_CT_  :  mimimun size in bytes of change tracking to apply
UNUSED_OPTIM        unused space optimuzation

_BACKUP_SEQ_BUF  :  number of buffers used for non-DISK channels
CNT

_BACKUP_SEQ_BUF  :  size of buffers used for non-DISK channels
SZ

_BCT_BITMAPS_PE  :  number of bitmaps to store for each datafile
R_FILE

_BCT_BUFFER_ALL  :  maximum size of all change tracking buffer allocations,
OCATION_MAX         in bytes

_BCT_BUFFER_ALL  :  mininum number of extents to allocate per buffer
OCATION_MIN_EXT     allocation
ENTS

_BCT_BUFFER_ALL  :  size of one change tracking buffer allocation, in bytes
OCATION_SIZE

_BCT_CHUNK_SIZE  :  change tracking datafile chunk size, in bytes
_BCT_CRASH_RESE  :  change tracking reserved crash recovery SGA space, in
RVE_SIZE            bytes

_BCT_FILE_BLOCK  :  block size of change tracking file, in bytes
_SIZE

_BCT_FILE_EXTEN  :  extent size of change tracking file, in bytes
T_SIZE

_BCT_FIXTAB_FIL  :  change tracking file for fixed tables
E

_BCT_HEALTH_CHE  :  CTWR health check interval (seconds), zero to disable
CK_INTERVAL

_BCT_INITIAL_PR  :  initial number of entries in the private change
IVATE_DBA_BUFFE     tracking dba buffers
R_SIZE

_BCT_MRP_TIMEOU  :  CTWR MRP wait timeout (seconds), zero to wait forever
T

_BCT_PUBLIC_DBA  :  allow dynamic resizing of public dba buffers, zero to
_BUFFER_DYNRESI     disable
ZE

_BCT_PUBLIC_DBA  :  max buffer size permitted for public dba buffers, in
_BUFFER_MAXSIZE     bytes

_BCT_PUBLIC_DBA  :  total size of all public change tracking dba buffers,
_BUFFER_SIZE        in bytes

_BG_SPAWN_DIAG_  :  background processes spawn diagnostic options
OPTS

_BITMAP_OR_IMPR  :  controls extensions to partition pruning for general
OVEMENT_ENABLED     predicates

_BLOCKING_SESS_  :  blocking session graph cache size in bytes
GRAPH_CACHE_SIZ
E

_BLOCKS_PER_CAC  :  number of consecutive blocks per global cache server
HE_SERVER

_BLOCK_LEVEL_OF  :  High Latency Threshold for Block Level Offload
FLOAD_HIGH_LAT_     operations
THRESH

_BLOCK_SAMPLE_R  :  controls readahead value during block sampling
EADAHEAD_PROB_T
HRESHOLD

_BLOOM_FILTER_D  :  debug level for bloom filtering
EBUG

_BLOOM_FILTER_E  :  enables or disables bloom filter
NABLED

_BLOOM_FILTER_S  :  bloom filter vector size (in KB)
IZE

_BLOOM_FOLDING_  :  bloom filter folding density lower bound
DENSITY

_BLOOM_FOLDING_  :  Enable folding of bloom filter
ENABLED

_BLOOM_FOLDING_  :  bloom filter folding size lower bound (in KB)
MIN

_BLOOM_MAX_SIZE  :  maximum bloom filter size (in KB)
_BLOOM_MINMAX_E  :  enable or disable bloom min max filtering
NABLED

_BLOOM_PREDICAT  :  enables or disables bloom filter predicate pushdown
E_ENABLED

_BLOOM_PREDICAT  :  enables or disables bloom filter predicate offload to
E_OFFLOAD           cells

_BLOOM_PRUNING_  :  Enable partition pruning using bloom filtering
ENABLED

_BLOOM_PUSHING_  :  bloom filter pushing size upper bound (in KB)
MAX

_BLOOM_PUSHING_  :  bloom filter combined pushing size upper bound (in KB)
TOTAL_MAX

_BLOOM_RM_FILTE  :  remove bloom predicate in favor of zonemap join pruning
R                   predicate

_BLOOM_SM_ENABL  :  enable bloom filter optimization using slave mapping
ED

_BRANCH_TAGGING  :  enable branch tagging for distributed transaction
_BROADCAST_SCN_  :  broadcast-on-commit scn mode
MODE

_BROADCAST_SCN_  :  broadcast-on-commit scn wait timeout in centiseconds
WAIT_TIMEOUT

_BSLN_ADAPTIVE_  :  Adaptive Thresholds Enabled
THRESHOLDS_ENAB
LED

_BT_MMV_QUERY_R  :  allow rewrites with multiple MVs and base tables
EWRITE_ENABLED

_BUFFERED_MESSA  :  Buffered message spill age
GE_SPILL_AGE

_BUFFERED_PUBLI  :  Flow control threshold for buffered publishers except
SHER_FLOW_CONTR     capture
OL_THRESHOLD

_BUFFER_BUSY_WA  :  buffer busy wait time in centiseconds
IT_TIMEOUT

_BUFQ_STOP_FLOW  :  Stop enforcing flow control for buffered queues
_CONTROL

_BUILD_DEFERRED  :  DEFERRED MV creation skipping MV log setup update
_MV_SKIPPING_MV
LOG_UPDATE

_BUMP_HIGHWATER  :  how many blocks should we allocate per free list on
_MARK_COUNT         advancing HWM

_BWR_FOR_FLUSHE  :  if TRUE, generate a BWR for a flushed PI
D_PI

_BYPASS_SRL_FOR  :  bypass SRL for S/O EOR logs
_SO_EOR

_BYPASS_XPLATFO  :  bypass datafile header cross-platform-compliance errors
RM_ERROR

_B_TREE_BITMAP_  :  enable the use of bitmap plans for tables w. only
PLANS               B-tree indexes

_CACHE_ORL_DURI  :  cache online logs
NG_OPEN

_CACHE_STATS_MO  :  if TRUE, enable cache stats monitoring
NITOR

_CAPTURE_BUFFER  :  To set the size of the PGA I/O recording buffers
_SIZE

_CAPTURE_PUBLIS  :  Flow control threshold for capture publishers
HER_FLOW_CONTRO
L_THRESHOLD

_CASE_SENSITIVE  :  case sensitive logon enabled
_LOGON

_CAUSAL_STANDBY  :  Causal standby wait timeout
_WAIT_TIMEOUT

_CDB_COMPATIBLE  :  CDB Compatible
_CDB_RAC_AFFINI  :  rac affinity for parallel cdb operations
TY

_CDC_SUBSCRIPTI  :  Change Data Capture subscription_owner
ON_OWNER

_CDMP_DIAGNOSTI  :  cdmp directory diagnostic level
C_LEVEL

_CELL_FAST_FILE  :  Allow optimized file creation path for Cells
_CREATE

_CELL_FAST_FILE  :  Allow optimized rman restore for Cells
_RESTORE

_CELL_FILE_FORM  :  Cell file format chunk size in MB
AT_CHUNK_SIZE

_CELL_INDEX_SCA  :  enable CELL processing of index FFS
N_ENABLED

_CELL_MATERIALI  :  Force materialization of all offloadable expressions on
ZE_ALL_EXPRESSI     the cells
ONS

_CELL_MATERIALI  :  enable offload of expressions underlying virtual
ZE_VIRTUAL_COLU     columns to cells
MNS

_CELL_OBJECT_EX  :  flashcache object expiration timeout
PIRATION_HOURS

_CELL_OFFLOAD_C  :  specifies capability table to load
APABILITIES_ENA
BLED

_CELL_OFFLOAD_C  :  enable complex SQL processing offload to cells
OMPLEX_PROCESSI
NG

_CELL_OFFLOAD_E  :  enable offload of expressions to cells
XPRESSIONS

_CELL_OFFLOAD_H  :  Query offloading of hybrid columnar compressed tables
YBRIDCOLUMNAR       to exadata

_CELL_OFFLOAD_P  :  enable out-of-order SQL processing offload to cells
REDICATE_REORDE
RING_ENABLED

_CELL_OFFLOAD_S  :  enable offload of SYS_CONTEXT evaluation to cells
YS_CONTEXT

_CELL_OFFLOAD_T  :  enable timezone related SQL processing offload to cells
IMEZONE

_CELL_OFFLOAD_V  :  enable offload of predicates on virtual columns to
IRTUAL_COLUMNS      cells

_CELL_RANGE_SCA  :  enable CELL processing of index range scans
N_ENABLED

_CELL_STORIDX_M  :  Cell Storage Index mode
ODE

_CGS_ALLGROUP_P  :  CGS DBALL group polling interval in milli-seconds
OLL_TIME

_CGS_COMM_READI  :  CGS communication readiness check
NESS_CHECK

_CGS_DBALL_GROU  :  CGS DBALL group registration type
P_REGISTRATION

_CGS_DBGROUP_PO  :  CGS DB group polling interval in milli-seconds
LL_TIME

_CGS_HEALTH_CHE  :  CGS health check during reconfiguration
CK_IN_RECONFIG

_CGS_MEMBERKILL  :  allow a RIM instance to issue a CSS member kill
_FROM_RIM_INSTA
NCE

_CGS_MSG_BATCHI  :  CGS message batching
NG

_CGS_MSG_BATCH_  :  CGS message batch size in bytes
SIZE

_CGS_NODE_KILL_  :  CGS node kill escalation to CSS
ESCALATION

_CGS_NODE_KILL_  :  CGS wait time to escalate node kill to CSS in seconds
ESCALATION_WAIT

_CGS_RECONFIG_E  :  CGS reconfiguration extra wait time for CSS in seconds
XTRA_WAIT

_CGS_RECONFIG_T  :  CGS reconfiguration timeout interval
IMEOUT

_CGS_SEND_TIMEO  :  CGS send timeout value
UT

_CGS_TICKETS     :  CGS messaging tickets
_CGS_TICKET_SEN  :  CGS ticket active sendback percentage threshold
DBACK

_CGS_ZOMBIE_MEM  :  CGS zombie member kill wait time in seconds
BER_KILL_WAIT

_CHANGE_VECTOR_  :  Number of change vector buffers for media recovery
BUFFERS

_CHECK_BLOCK_AF  :  perform block check after checksum if both are turned
TER_CHECKSUM        on

_CHECK_BLOCK_NE  :  check block new invariant for flashback
W_INVARIANT_FOR
_FLASHBACK

_CHECK_COLUMN_L  :  check column length
ENGTH

_CHECK_PDBID_IN  :  Enable checking of pluggable database ID in redo
_REDO

_CHECK_TS_THRES  :  check tablespace thresholds
HOLD

_CLEANOUT_SHRCU  :  if TRUE, cleanout shrcur buffers
R_BUFFERS

_CLEANUP_ROLLBA  :  no. of undo entries to apply per transaction cleanup
CK_ENTRIES

_CLEANUP_TIMEOU  :  timeout value for PMON cleanup
T

_CLEANUP_TIMEOU  :  flags for PMON cleanup timeout
T_FLAGS

_CLEAR_BUFFER_B  :  Always zero-out buffer before reuse for security
EFORE_REUSE

_CLIENT_ENABLE_  :  enable automatic unregister after a send fails with
AUTO_UNREGISTER     timeout

_CLIENT_NTFN_CL  :  interval after which dead client registration cleanup
EANUP_INTERVAL      task repeats

_CLIENT_NTFN_PI  :  time between pings to unreachable notification clients
NGINTERVAL

_CLIENT_NTFN_PI  :  number of times to ping unreachable notification
NGRETRIES           clients

_CLIENT_NTFN_PI  :  timeout to connect to unreachable notification clients
NGTIMEOUT

_CLIENT_RESULT_  :  bypass the client result cache
CACHE_BYPASS

_CLIENT_TSTZ_ER  :  Should Client give error for suspect Timestamp with
ROR_CHECK           Timezone operations

_CLI_CACHEBKTAL  :  Percentage of memory to allocate
LOC

_CLONE_ONE_PDB_  :  Recover ROOT and only one PDB in clone database
RECOVERY

_CLOSE_CACHED_O  :  close cursors cached by PL/SQL at each commit
PEN_CURSORS

_CLOSE_DEQ_BY_C  :  Close Dequeue By Condition Cursors
OND_CURS

_CLOUD_NAME      :  gsm cloud name
_CLUSTERWIDE_GL  :  enable/disable clusterwide global transactions
OBAL_TRANSACTIO
NS

_CLUSTER_LIBRAR  :  cluster library selection
Y

_COLLAPSE_WAIT_  :  collapse wait history
HISTORY

_COLLECT_TEMPUN  :  Collect Statistics v$tempundostat
DO_STATS

_COLLECT_UNDO_S  :  Collect Statistics v$undostat
TATS

_COLUMN_COMPRES  :  Column compression ratio
SION_FACTOR

_COLUMN_ELIMINA  :  turn off predicate-only column elimination
TION_OFF

_COLUMN_TRACKIN  :  column usage tracking
G_LEVEL

_COMMON_DATA_VI  :  common objects returned through dictionary views
EW_ENABLED

_COMMON_USER_PR  :  Enforce restriction on a prefix of a Common
EFIX                User/Role/Profile name

_COMPILATION_CA  :  Size of the compilation call heaps extents
LL_HEAP_EXTENT_
SIZE

_COMPLEX_VIEW_M  :  enable complex view merging
ERGING

_COMPRESSION_AB  :  number of recompression above cache for sanity check
OVE_CACHE

_COMPRESSION_AD  :  Compression advisor
VISOR

_COMPRESSION_CH  :  percentage of chained rows allowed for Compression
AIN

_COMPRESSION_CO  :  Compression compatability
MPATIBILITY

_CONCURRENCY_CH  :  what is the chosen value of concurrency
OSEN

_CONNECTION_BRO  :  connection broker host for listen address
KER_HOST

_CONNECT_BY_USE  :  use union all for connect by
_UNION_ALL

_CONTROLFILE_AU  :  time delay (in seconds) for performing controlfile
TOBACKUP_DELAY      autobackups

_CONTROLFILE_BA  :  enable check of the copied blocks during controlfile
CKUP_COPY_CHECK     backup copy

_CONTROLFILE_BL  :  control file block size in bytes
OCK_SIZE

_CONTROLFILE_CE  :  Flash cache hint for control file accesses
LL_FLASH_CACHIN
G

_CONTROLFILE_EN  :  dump the system states after controlfile enqueue
QUEUE_DUMP          timeout

_CONTROLFILE_EN  :  control file enqueue max holding time in seconds
QUEUE_HOLDING_T
IME

_CONTROLFILE_EN  :  control file enqueue holding time tracking size
QUEUE_HOLDING_T
IME_TRACKING_SI
ZE

_CONTROLFILE_EN  :  control file enqueue timeout in seconds
QUEUE_TIMEOUT

_CONTROLFILE_SE  :  control file initial section size
CTION_INIT_SIZE

_CONTROLFILE_SE  :  control file max expansion rate
CTION_MAX_EXPAN
D

_CONTROLFILE_UP  :  controlfile update sanity check
DATE_CHECK

_CONVERT_SET_TO  :  enables conversion of set operator to join
_JOIN

_COORD_MESSAGE_  :  parallel recovery coordinator side extra message buffer
BUFFER              size

_CORRUPTED_ROLL  :  corrupted undo segment list
BACK_SEGMENTS

_COST_EQUALITY_  :  enables costing of equality semi-join
SEMI_JOIN

_CPU_EFF_THREAD  :  CPU effective thread multiplier
_MULTIPLIER

_CPU_TO_IO       :  divisor for converting CPU cost to I/O cost
_CP_NUM_HASH_LA  :  connection pool number of hash latches
TCHES

_CRASH_DOMAIN_O  :  allow domain to exit for exceptions in any thread
N_EXCEPTION

_CREATE_STAT_SE  :  create ilm statistics segment
GMENT

_CREATE_TABLE_I  :  allow creation of table in a cluster not owned by the
N_ANY_CLUSTER       user

_CR_GRANT_GLOBA  :  if TRUE, grant lock for CR requests when block is in
L_ROLE              global role

_CR_GRANT_LOCAL  :  turn 3-way CR grants off, make it automatic, or turn it
_ROLE               on

_CR_GRANT_ONLY   :  if TRUE, grant locks when possible and do not send the
block

_CR_SERVER_LOG_  :  if TRUE, flush redo log before serving a CR buffer
FLUSH

_CR_TRC_BUF_SIZ  :  size of cr trace buffer
E

_CTX_DOC_POLICY  :  enable ctx_doc.policy_stems api
_STEMS

_CURSOR_BIND_CA  :  maximum size of the cursor bind capture area
PTURE_AREA_SIZE

_CURSOR_BIND_CA  :  interval (in seconds) between two bind capture for a
PTURE_INTERVAL      cursor

_CURSOR_CACHE_T  :  number of seconds a session cached cursor stay in
IME                 cache.

_CURSOR_DB_BUFF  :  additional number of buffers a cursor can pin at once
ERS_PINNED

_CURSOR_FEATURE  :  Shared cursor features enabled bits.
S_ENABLED

_CURSOR_OBSOLET  :  Number of cursors per parent before obsoletion.
E_THRESHOLD

_CURSOR_PLAN_EN  :  enable collection and display of cursor plans
ABLED

_CURSOR_PLAN_HA  :  version of cursor plan hash value
SH_VERSION

_CURSOR_PLAN_UN  :  enables/disables using unparse to build
PARSE_ENABLED       projection/predicates

_CURSOR_RELOAD_  :  Number of failed reloads before marking cursor unusable
FAILURE_THRESHO
LD

_CURSOR_RUNTIME  :  Shared cursor runtime heap memory limit
HEAP_MEMLIMIT

_CURSOR_STATS_E  :  Enable cursor stats
NABLED

_CU_ROW_LOCKING  :  CU row level locking
_CVMAP_BUFFERS   :  Number of change vector buffers for multi instance
media recovery

_CVW_ENABLE_WEA  :  enable weak view checking
K_CHECKING

_DATAFILE_COW    :  Use copy on write snapshot for the renamed file
_DATAFILE_WRITE  :  datafile write errors crash instance
_ERRORS_CRASH_I
NSTANCE

_DATAPUMP_COMPR  :  specifies buffer size for BASIC compression algorithm
ESSBAS_BUFFER_S
IZE

_DATAPUMP_METAD  :  specifies buffer size for metadata file I/O
ATA_BUFFER_SIZE

_DATAPUMP_TABLE  :  specifies buffer size for table data file I/O
DATA_BUFFER_SIZ
E

_DATA_TRANSFER_  :  Percentange * 100 of buffer cache to transfer to data
CACHE_BC_PERC_X     transfer cache
100

_DATA_TRANSFER_  :  Size of data transfer cache
CACHE_SIZE

_DATA_WAREHOUSI  :  if TRUE, enable data warehousing scan buffers
NG_SCAN_BUFFERS

_DBFS_MODIFY_IM  :  DBFS Link allows implicit fetch on modify – only on
PLICIT_FETCH        SecureFiles

_DBG_PROC_START  :  debug process startup
UP

_DBG_SCAN        :  generic scan debug
_DBMS_SQL_SECUR  :  Security level in DBMS_SQL
ITY_LEVEL

_DBOP_ENABLED    :  Any positive number enables automatic DBOP monitoring.
0 is disabled

_DBPOOL_NAME     :  gsm database pool name
_DBRM_DYNAMIC_T  :  DBRM dynamic threshold setting
HRESHOLD

_DBRM_NUM_RUNNA  :  Resource Manager number of runnable list per NUMA node
BLE_LIST

_DBRM_QUANTUM    :  DBRM quantum
_DBRM_RUNCHK     :  Resource Manager Diagnostic Running Thread Check
_DBRM_SHORT_WAI  :  Resource Manager short wait length
T_US

_DBWR_ASYNC_IO   :  Enable dbwriter asynchronous writes
_DBWR_SCAN_INTE  :  dbwriter scan interval
RVAL

_DBWR_TRACING    :  Enable dbwriter tracing
_DB_16K_FLASH_C  :  flash cache file for 16k block size
ACHE_FILE

_DB_16K_FLASH_C  :  flash cache size for _db_16k_flash_cache_file
ACHE_SIZE

_DB_2K_FLASH_CA  :  flash cache file for 2k block size
CHE_FILE

_DB_2K_FLASH_CA  :  flash cache size for _db_2k_flash_cache_file
CHE_SIZE

_DB_32K_FLASH_C  :  flash cache file for 32k block size
ACHE_FILE

_DB_32K_FLASH_C  :  flash cache size for _db_32k_flash_cache_file
ACHE_SIZE

_DB_4K_FLASH_CA  :  flash cache file for 4k block size
CHE_FILE

_DB_4K_FLASH_CA  :  flash cache size for _db_4k_flash_cache_file
CHE_SIZE

_DB_8K_FLASH_CA  :  flash cache file for 8k block size
CHE_FILE

_DB_8K_FLASH_CA  :  flash cache size for _db_8k_flash_cache_file
CHE_SIZE

_DB_AGING_COOL_  :  Touch count set when buffer cooled
COUNT

_DB_AGING_FREEZ  :  Make CR buffers always be too cold to keep in cache
E_CR

_DB_AGING_HOT_C  :  Touch count which sends a buffer to head of replacement
RITERIA             list

_DB_AGING_STAY_  :  Touch count set when buffer moved to head of
COUNT               replacement list

_DB_AGING_TOUCH  :  Touch count which sends a buffer to head of replacement
_TIME               list

_DB_ALWAYS_CHEC  :  Always perform block check and checksum for System
K_SYSTEM_TS         tablespace

_DB_BLOCKS_PER_  :  Number of blocks per hash latch
HASH_LATCH

_DB_BLOCK_ADJCH  :  adjacent cache buffer checks – low blkchk overwrite
ECK                 parameter

_DB_BLOCK_ADJCH  :  adjacent cache buffer check level
K_LEVEL

_DB_BLOCK_ALIGN  :  Align Direct Reads
_DIRECT_READ

_DB_BLOCK_BAD_W  :  enable bad write checks
RITE_CHECK

_DB_BLOCK_BUFFE  :  Number of database blocks cached in memory: hidden
RS                  parameter

_DB_BLOCK_CACHE  :  Always clone data blocks on get (for debugging)
_CLONE

_DB_BLOCK_CACHE  :  buffer header tracing (non-zero only when debugging)
_HISTORY

_DB_BLOCK_CACHE  :  buffer header tracing level
_HISTORY_LEVEL

_DB_BLOCK_CACHE  :  buffer header tracing for lru operations
_HISTORY_LRU

_DB_BLOCK_CACHE  :  number of unmapped buffers (for tracking swap calls on
_NUM_UMAP           blocks)

_DB_BLOCK_CACHE  :  protect database blocks (true only when debugging)
_PROTECT

_DB_BLOCK_CACHE  :  protect database blocks (for strictly internal use
_PROTECT_INTERN     only)
AL

_DB_BLOCK_CHECK  :  Check more and dump block before image for debugging
_FOR_DEBUG

_DB_BLOCK_CHECK  :  check objd and typ on cache disk read
_OBJTYP

_DB_BLOCK_CHUNK  :  chunkify noncontig multi block reads
IFY_NCMBR

_DB_BLOCK_CORRU  :  threshold number of block recovery attempts
PTION_RECOVERY_
THRESHOLD

_DB_BLOCK_DO_FU  :  do full block read even if some blocks are in cache
LL_MBREADS

_DB_BLOCK_HASH_  :  Number of database block hash buckets
BUCKETS

_DB_BLOCK_HASH_  :  Number of database block hash latches
LATCHES

_DB_BLOCK_HEADE  :  number of extra buffer headers to use as guard pages
R_GUARD_LEVEL

_DB_BLOCK_HI_PR  :  Fraction of writes for high priority reasons
IORITY_BATCH_SI
ZE

_DB_BLOCK_KNOWN  :  Initial Percentage of buffers to maintain known clean
_CLEAN_PCT

_DB_BLOCK_LRU_L  :  number of lru latches
ATCHES

_DB_BLOCK_MAX_C  :  Maximum Allowed Number of CR buffers per dba
R_DBA

_DB_BLOCK_MAX_S  :  Percentage of buffers to inspect when looking for free
CAN_PCT

_DB_BLOCK_MED_P  :  Fraction of writes for medium priority reasons
RIORITY_BATCH_S
IZE

_DB_BLOCK_NUMA   :  Number of NUMA nodes
_DB_BLOCK_PREFE  :  Batched IO enable fast longjumps
TCH_FAST_LONGJU
MPS_ENABLED

_DB_BLOCK_PREFE  :  Prefetch limit in blocks
TCH_LIMIT

_DB_BLOCK_PREFE  :  Prefetch force override in blocks
TCH_OVERRIDE

_DB_BLOCK_PREFE  :  Batched IO enable private cache
TCH_PRIVATE_CAC
HE_ENABLED

_DB_BLOCK_PREFE  :  Prefetch quota as a percent of cache size
TCH_QUOTA

_DB_BLOCK_PREFE  :  Batched IO enable skip reading buffers
TCH_SKIP_READIN
G_ENABLED

_DB_BLOCK_PREFE  :  Allowed wasted percent threshold of prefetched size
TCH_WASTED_THRE
SHOLD_PERC

_DB_BLOCK_TABLE  :  Size of shared table scan read buffer
_SCAN_BUFFER_SI
ZE

_DB_BLOCK_TEMP_  :  generate redo for temp blocks
REDO

_DB_BLOCK_TRACE  :  trace buffer protect calls
_PROTECT

_DB_BLOCK_VLM_C  :  check of rvlm mapping leaks (for debugging)
HECK

_DB_BLOCK_VLM_L  :  Threshold for allowable vlm leaks
EAK_THRESHOLD

_DB_CACHE_ADVIC  :  cache advisory maximum multiple of current size to
E_MAX_SIZE_FACT     similate
OR

_DB_CACHE_ADVIC  :  cache advisory sampling factor
E_SAMPLE_FACTOR

_DB_CACHE_ADVIC  :  cache simulation sanity check
E_SANITY_CHECK

_DB_CACHE_BLOCK  :  dump short call stack for block reads
_READ_STACK_TRA
CE

_DB_CACHE_CRX_C  :  check for costly crx examination functions
HECK

_DB_CACHE_MISS_  :  check LEs after cache miss
CHECK_LES

_DB_CACHE_MMAN_  :  check for wait latch get under MMAN ops in kcb
LATCH_CHECK

_DB_CACHE_PRE_W  :  Buffer Cache Pre-Warm Enabled : hidden parameter
ARM

_DB_CACHE_PROCE  :  maximum number of cr pins a process may have
SS_CR_PIN_MAX

_DB_CACHE_WAIT_  :  trace new kslwaits
DEBUG

_DB_CHANGE_NOTI  :  enable db change notification
FICATION_ENABLE

_DB_CHECK_CELL_  :
HINTS

_DB_DISABLE_TEM  :  Disable Temp Encryption for Spills
P_ENCRYPTION

_DB_DUMP_FROM_D  :  dump contents from disk and efc
ISK_AND_EFC

_DB_DW_SCAN_ADA  :  if TRUE, enable adaptive DW scan cooling
PTIVE_COOLING

_DB_DW_SCAN_MAX  :  DW Scan adaptive cooling max shadow count
_SHADOW_COUNT

_DB_DW_SCAN_OBJ  :  DW Scan object cooling factor to cool all temperatures
_COOLING_FACTOR

_DB_DW_SCAN_OBJ  :  DW Scan object cooling interval in number of scans,
_COOLING_INTERV     seconds, or pct of cache size
AL

_DB_DW_SCAN_OBJ  :  DW scan objtect cooling policy
_COOLING_POLICY

_DB_DW_SCAN_OBJ  :  DW Scan object warming increment when an object is
_WARMING_INCREM     scanned
ENT

_DB_FAST_OBJ_CH  :  enable fast object drop sanity check
ECK

_DB_FAST_OBJ_CK  :  enable fast object checkpoint
PT

_DB_FAST_OBJ_TR  :  enable fast object truncate
UNCATE

_DB_FILE_DIRECT  :  Sequential I/O buf size
_IO_COUNT

_DB_FILE_EXEC_R  :  multiblock read count for regular clients
EAD_COUNT

_DB_FILE_FORMAT  :  Block formatting I/O buf count
_IO_BUFFERS

_DB_FILE_NONCON  :  number of noncontiguous db blocks to be prefetched
TIG_MBLOCK_READ
_COUNT

_DB_FILE_OPTIMI  :  multiblock read count for regular clients
ZER_READ_COUNT

_DB_FLASHBACK_I  :  Flashback IO Buffer Size
OBUF_SIZE

_DB_FLASHBACK_L  :  Minimum flashback database log size in bytes
OG_MIN_SIZE

_DB_FLASHBACK_L  :  Minimum flashback database log total space in bytes
OG_MIN_TOTAL_SP
ACE

_DB_FLASHBACK_N  :  Flashback Number of IO buffers
UM_IOBUF

_DB_FLASH_CACHE  :  Flash cache force replenish lower limit in buffers
_FORCE_REPLENIS
H_LIMIT

_DB_FLASH_CACHE  :  Flash cache keep buffer upper limit in percentage
_KEEP_LIMIT

_DB_FLASH_CACHE  :  Flash cache maximum latency allowed in 10 milliseconds
_MAX_LATENCY

_DB_FLASH_CACHE  :  Flash cache maximum outstanding writes allowed
_MAX_OUTSTANDIN
G_WRITES

_DB_FLASH_CACHE  :  Flash cache max read retry
_MAX_READ_RETRY

_DB_FLASH_CACHE  :  Flash cache maximum slow io allowed
_MAX_SLOW_IO

_DB_FLASH_CACHE  :  Flash cache write buffer upper limit in percentage
_WRITE_LIMIT

_DB_HANDLES      :  System-wide simultaneous buffer operations
_DB_HANDLES_CAC  :  Buffer handles cached each process
HED

_DB_HOT_BLOCK_T  :  track hot blocks for hash latch contention
RACKING

_DB_INDEX_BLOCK  :  index block checking override parameter
_CHECKING

_DB_INITIAL_CAC  :  size of cache created at startup
HESIZE_CREATE_M
B

_DB_L2_TRACING   :  flash cache debug tracing
_DB_LARGE_DIRTY  :  Number of buffers which force dirty queue to be written
_QUEUE

_DB_LOST_WRITE_  :  Enable scn based lost write detection mechanism
CHECKING

_DB_LOST_WRITE_  :  Enable _db_lost_write_checking tracing
TRACING

_DB_MTTR_ADVICE  :  MTTR advisory
_DB_MTTR_PARTIT  :  number of partitions for MTTR advisory
IONS

_DB_MTTR_SAMPLE  :  MTTR simulation sampling factor
_FACTOR

_DB_MTTR_SIM_TA  :  MTTR simulation targets
RGET

_DB_MTTR_SIM_TR  :  MTTR simulation trace size
ACE_SIZE

_DB_MTTR_TRACE_  :  dump trace entries to alert file
TO_ALERT

_DB_NOARCH_DISB  :  Image redo logging (NOARCHIVEMODE)
LE_OPTIM

_DB_NUM_EVICT_W  :  number of evict wait events
AITEVENTS

_DB_NUM_GSM      :  database number in gsm dbpool
_DB_OBJ_ENABLE_  :  enable ksr in object checkpoint/reuse
KSR

_DB_PERCENT_HOT  :  Percent of default buffer pool considered hot
_DEFAULT

_DB_PERCENT_HOT  :  Percent of keep buffer pool considered hot
_KEEP

_DB_PERCENT_HOT  :  Percent of recycle buffer pool considered hot
_RECYCLE

_DB_PERCPU_CREA  :  size of cache created per cpu in deferred cache create
TE_CACHESIZE

_DB_PREFETCH_HI  :  maintain prefetch histogram statistics in x$kcbprfhs
STOGRAM_STATIST
ICS

_DB_RECOVERY_TE  :  default database recovery temporal file location
MPORAL_FILE_DES
T

_DB_REQUIRED_PE  :  percent of fairshare a processor group should always
RCENT_FAIRSHARE     use
_USAGE

_DB_ROW_OVERLAP  :  row overlap checking override parameter for data/index
_CHECKING           blocks

_DB_TODEFER_CAC  :  buffer cache deferred create
HE_CREATE

_DB_WRITER_CHUN  :  Number of writes DBWR should wait for
K_WRITES

_DB_WRITER_COAL  :  Size of memory allocated to dbwriter for coalescing
ESCE_AREA_SIZE      writes

_DB_WRITER_COAL  :  Limit on size of coalesced write
ESCE_WRITE_LIMI
T

_DB_WRITER_FLUS  :  If FALSE, DBWR will not downgrade IMU txns for AGING
H_IMU

_DB_WRITER_HIST  :  maintain dbwr histogram statistics in x$kcbbhs
OGRAM_STATISTIC
S

_DB_WRITER_MAX_  :  Max number of outstanding DB Writer IOs
WRITES

_DB_WRITER_NOME  :  Enable DBWR no-memcopy coalescing
MCOPY_COALESCE

_DB_WRITER_VERI  :  Enable lost write detection mechanism
FY_WRITES

_DDE_FLOOD_CONT  :  Initialize Flood Control at database open
ROL_INIT

_DD_VALIDATE_RE  :  GES deadlock detection validate remote locks
MOTE_LOCKS

_DEADLOCK_DIAGN  :  automatic deadlock resolution diagnostics level
OSTIC_LEVEL

_DEADLOCK_RECOR  :  record resolved deadlocks to the alert log
D_TO_ALERT_LOG

_DEADLOCK_RESOL  :  create incidents when resolving any deadlock?
UTION_INCIDENTS
_ALWAYS

_DEADLOCK_RESOL  :  create incidents during deadlock resolution
UTION_INCIDENTS
_ENABLED

_DEADLOCK_RESOL  :  automatic deadlock resolution level
UTION_LEVEL

_DEADLOCK_RESOL  :  the minimum wait timeout required for deadlock
UTION_MIN_WAIT_     resolution
TIMEOUT_SECS

_DEADLOCK_RESOL  :  the amount of time given to process a deadlock
UTION_SIGNAL_PR     resolution signal
OCESS_THRESH_SE
CS

_DEAD_PROCESS_S  :  PMON dead process scan interval (in seconds)
CAN_INTERVAL

_DEDICATED_SERV  :  dedicated server poll count
ER_POLL_COUNT

_DEDICATED_SERV  :  dedicated server post/wait
ER_POST_WAIT

_DEDICATED_SERV  :  dedicated server post/wait call
ER_POST_WAIT_CA
LL

_DEFAULT_ENCRYP  :  default encryption algorithm
T_ALG

_DEFAULT_NON_EQ  :  sanity check on default selectivity for like/range
UALITY_SEL_CHEC     predicate
K

_DEFERRED_CONST  :  Deferred constant folding mode
ANT_FOLDING_MOD
E

_DEFERRED_LOG_D  :  consider deferred log dest as valid for log deletion
EST_IS_VALID        (TRUE/FALSE)

_DEFERRED_SEG_I  :  Enable Deferred Segment Creation in Seed
N_SEED

_DEFER_EOR_ORL_  :  defer EOR ORL archival for switchover
ARCH_FOR_SO

_DEFER_LOG_BOUN  :  defer media recovery checkpoint at log boundary
DARY_CKPT

_DEFER_LOG_COUN  :  Number of log boundaries media recovery checkpoint lags
T                   behind

_DEFER_RCV_DURI  :  Defer recovery during switchover to standby
NG_SW_TO_SBY

_DEFER_SGA_ALLO  :  Chunk size for defer sga allocation
C_CHUNK_SIZE

_DEFER_SGA_ENAB  :  Enable deferred shared memory allocation for SGA
LED

_DEFER_SGA_MIN_  :  Minimum shared pool size at startup with deferred sga
SPSZ_AT_STARTUP     enabled

_DEFER_SGA_MIN_  :  Minimum total deferred segs size for defer sga
TOTAL_DEFER_SEG     allocation
S_SZ

_DEFER_SGA_TEST  :  SA** sleeps for N secs before allocating a deferred
_ALLOC_INTV         segment

_DELAY_INDEX_MA  :  delays index maintenance until after MV is refreshed
INTAIN

_DELTA_PUSH_SHA  :  enable delta push if greater than the # of share
RE_BLOCKERS         blockers

_DEQ_EXECUTE_RE  :  deq execute reset time
SET_TIME

_DEQ_HT_CHILD_L  :  deq ht child latches
ATCHES

_DEQ_HT_MAX_ELE  :  deq ht max elements
MENTS

_DEQ_LARGE_TXN_  :  deq large txn size
SIZE

_DEQ_LOG_ARRAY_  :  deq log array size
SIZE

_DEQ_MAXWAIT_TI  :  Change wait times between dequeue calls
ME

_DEQ_MAX_FETCH_  :  deq max fetch count
COUNT

_DESIRED_README  :  The desired percentage of redo reading from memory
M_RATE

_DG_BROKER_TRAC  :  data guard broker trace level
E_LEVEL

_DG_CF_CHECK_TI  :  Data Guard controlfile check timer
MER

_DG_CORRUPT_RED  :  Corrupt redo log validation during archivals
O_LOG

_DIAG_ADR_AUTO_  :  Enable/disable ADR MMON Auto Purging
PURGE

_DIAG_ADR_ENABL  :  Parameter to enable/disable Diag ADR
ED

_DIAG_ADR_TEST_  :  Test parameter for Diagnosability
PARAM

_DIAG_ARB_BEFOR  :  dump diagnostics before killing unresponsive ARBs
E_KILL

_DIAG_BACKWARD_  :  Backward Compatibility for Diagnosability
COMPAT

_DIAG_CC_ENABLE  :  Parameter to enable/disable Diag Call Context
D

_DIAG_CONF_CAP_  :  Parameter to enable/disable Diag Configuration Capture
ENABLED

_DIAG_CRASHDUMP  :  parameter for systemstate dump level, used by DIAG
_LEVEL              during crash

_DIAG_DAEMON     :  start DIAG daemon
_DIAG_DDE_ASYNC  :  diag dde async actions: message age limit (in seconds)
_AGE_LIMIT

_DIAG_DDE_ASYNC  :  diag dde async actions: action cputime limit (in
_CPUTIME_LIMIT      seconds)

_DIAG_DDE_ASYNC  :  diag dde async actions: dispatch mode
_MODE

_DIAG_DDE_ASYNC  :  diag dde async actions: number of preallocated message
_MSGS               buffers

_DIAG_DDE_ASYNC  :  diag dde async actions: message buffer capacity
_MSG_CAPACITY

_DIAG_DDE_ASYNC  :  diag dde async actions: message processing rate – per
_PROCESS_RATE       loop

_DIAG_DDE_ASYNC  :  diag dde async actions: action runtime limit (in
_RUNTIME_LIMIT      seconds)

_DIAG_DDE_ASYNC  :  diag dde async actions: max number of concurrent slave
_SLAVES             processes

_DIAG_DDE_ENABL  :  enable DDE handling of critical errors
ED

_DIAG_DDE_FC_EN  :  Parameter to enable/disable Diag Flood Control
ABLED

_DIAG_DDE_FC_IM  :  Override Implicit Error Flood Control time parameter
PLICIT_TIME

_DIAG_DDE_FC_MA  :  Override Macro Error Flood Control time parameter
CRO_TIME

_DIAG_DDE_INC_P  :  The minimum delay between two MMON incident sweeps
ROC_DELAY           (minutes)

_DIAG_DIAGNOSTI  :  Turn off diag diagnostics
CS

_DIAG_DUMP_REQU  :  DIAG dump request debug level (0-2)
EST_DEBUG_LEVEL

_DIAG_DUMP_TIME  :  timeout parameter for SYNC dump
OUT

_DIAG_ENABLE_ST  :  enable events in instance startup notifiers
ARTUP_EVENTS

_DIAG_HM_RC_ENA  :  Parameter to enable/disable Diag HM Reactive Checks
BLED

_DIAG_HM_TC_ENA  :  Parameter to enable/disable Diag HM Test(dummy) Checks
BLED

_DIAG_PROC_ENAB  :  enable hung process diagnostic API
LED

_DIAG_PROC_MAX_  :  hung process diagnostic API max wait time in
TIME_MS             milliseconds

_DIAG_PROC_STAC  :  hung process diagnostic API stack capture type
K_CAPTURE_TYPE

_DIAG_TEST_SEG_  :  Sets trace segmentation to be in reincarnation mode
REINC_MODE

_DIAG_UTS_CONTR  :  UTS control parameter
OL

_DIAG_VERBOSE_E  :  Allow verbose error tracing on diag init
RROR_ON_INIT

_DIAG_XM_ENABLE  :  If TRUE, DIAG allows message exchanges across DB/ASM
D                   boundary

_DIMENSION_SKIP  :  control dimension skip when null feature
_NULL

_DIRECT_IO_SKIP  :  Skip current slot on error
_CUR_SLOT_ON_ER
ROR

_DIRECT_IO_SLOT  :  number of slots for direct path I/O
S

_DIRECT_IO_WSLO  :  number of write slots for direct path I/O
TS

_DIRECT_PATH_IN  :  disable direct path insert features
SERT_FEATURES

_DIRECT_READ_DE  :  enable direct read decision based on optimizer
CISION_STATISTI     statistics
CS_DRIVEN

_DISABLE_12751   :  disable policy timeout error (ORA-12751)
_DISABLE_12CBIG  :  DIsable Storing ILM Statistics in 12cBigFiles
FILE

_DISABLE_ACTIVE  :  disable active influx move during parallel media
_INFLUX_MOVE        recovery

_DISABLE_ADAPTI  :  adaptive shrunk aggregation
VE_SHRUNK_AGGRE
GATION

_DISABLE_APPLIA  :  Disable appliance-specific code
NCE_CHECK

_DISABLE_APPLIA  :  Disable appliance partnering algorithms
NCE_PARTNERING

_DISABLE_AUTOTU  :  disable autotune global transaction background
NE_GTX              processes

_DISABLE_BLOCK_  :  disable block checking at the session level
CHECKING

_DISABLE_CELL_O  :  disable cell optimized backups
PTIMIZED_BACKUP
S

_DISABLE_CPU_CH  :  disable cpu_count check
ECK

_DISABLE_CURSOR  :  disable cursor sharing
_SHARING

_DISABLE_DATALA  :  disable datalayer sampling
YER_SAMPLING

_DISABLE_DIRECT  :  Disable directory link checking
ORY_LINK_CHECK

_DISABLE_DUPLEX  :  Turn off connection duplexing
_LINK

_DISABLE_FASTOP  :  Do Not Use Fastopen
EN

_DISABLE_FAST_A  :  fast aggregation
GGREGATION

_DISABLE_FAST_V  :  disable PL/SQL fast validation
ALIDATE

_DISABLE_FBA_QR  :  disable flashback archiver query rewrite
W

_DISABLE_FBA_WP  :  disable flashback archiver wait for prepared
R                   transactions

_DISABLE_FILE_L  :  disable file locks for control, data, redo log files
OCKS

_DISABLE_FLASHB  :  disable flashback archiver
ACK_ARCHIVER

_DISABLE_FLASHB  :  Don’t use the Flashback Recyclebin optimization
ACK_RECYCLEBIN_
OPT

_DISABLE_FLASHB  :  Disable flashback wait callback
ACK_WAIT_CALLBA
CK

_DISABLE_FUNCTI  :  disable function-based index matching
ON_BASED_INDEX

_DISABLE_GVAQ_C  :  Disable cache
ACHE

_DISABLE_HEALTH  :  Disable Health Check
_CHECK

_DISABLE_HIGHRE  :  disable high-res tick counter
S_TICKS

_DISABLE_IMAGE_  :  Disable Oracle executable image checking
CHECK

_DISABLE_IMPLIC  :  disable implicit row movement
IT_ROW_MOVEMENT

_DISABLE_INCREM  :  Disable incremental checkpoints for thread recovery
ENTAL_CHECKPOIN
TS

_DISABLE_INCREM  :  Disable incremental recovery checkpoint mechanism
ENTAL_RECOVERY_
CKPT

_DISABLE_INDEX_  :  disable index block prefetching
BLOCK_PREFETCHI
NG

_DISABLE_INITIA  :  disable initial block compression
L_BLOCK_COMPRES
SION

_DISABLE_INSTAN  :  disable instance type check for ksp
CE_PARAMS_CHECK

_DISABLE_INTERF  :  disable interface checking at startup
ACE_CHECKING

_DISABLE_KCBHXO  :  disable kcbh(c)xor OSD functionality
R_OSD

_DISABLE_KCBL_F  :  Disable KCBL flashback block new optimization
LASHBACK_BLOCKN
EW_OPT

_DISABLE_KCB_FL  :  Disable KCB flashback block new optimization
ASHBACK_BLOCKNE
W_OPT

_DISABLE_KGGHSH  :  disable kgghshcrc32chk OSD functionality
CRC32_OSD

_DISABLE_LATCH_  :  disable latch-free SCN writes using 32-bit compare &
FREE_SCN_WRITES     swap
_VIA_32CAS

_DISABLE_LATCH_  :  disable latch-free SCN writes using 64-bit compare &
FREE_SCN_WRITES     swap
_VIA_64CAS

_DISABLE_LOGGIN  :  Disable logging
G

_DISABLE_METRIC  :  Disable Metrics Group (or all Metrics Groups)
S_GROUP

_DISABLE_MULTIP  :  disable multiple block size support (for debugging)
LE_BLOCK_SIZES

_DISABLE_ODM     :  disable odm feature
_DISABLE_PARALL  :  Disable parallel conventional loads
EL_CONVENTIONAL
_LOAD

_DISABLE_PRIMAR  :  disable primary bitmap switch
Y_BITMAP_SWITCH

_DISABLE_READ_O  :  Disable read-only open dictionary check
NLY_OPEN_DICT_C
HECK

_DISABLE_REBALA  :  disable space usage checks for storage reconfiguration
NCE_SPACE_CHECK

_DISABLE_RECOVE  :  Disable the read optimization during media recovery
RY_READ_SKIP

_DISABLE_ROLLIN  :  Disable Rolling Patch Feature
G_PATCH

_DISABLE_SAMPLE  :  disable row sampling IO optimization
_IO_OPTIM

_DISABLE_SAVEPO  :  disable the fix for bug 1402161
INT_RESET

_DISABLE_SELFTU  :  Disable self-tune checkpointing
NE_CHECKPOINTIN
G

_DISABLE_STORAG  :  Disable storage type checks
E_TYPE

_DISABLE_STREAM  :  streams diagnostics
S_DIAGNOSTICS

_DISABLE_STREAM  :  disable streams pool auto tuning
S_POOL_AUTO_TUN
ING

_DISABLE_SUN_RS  :  Disable IPC OSD support for Sun RSMAPI
M

_DISABLE_SYSTEM  :  disable system state dump
_STATE

_DISABLE_SYSTEM  :  Disable system state dump – wait samples
_STATE_WAIT_SAM
PLES

_DISABLE_TEMP_T  :  disable tablespace alerts for TEMPORARY tablespaces
ABLESPACE_ALERT
S

_DISABLE_THREAD  :  Disable thread internal disable feature
_INTERNAL_DISAB
LE

_DISABLE_THREAD  :  Thread snapshot
_SNAPSHOT

_DISABLE_TXN_AL  :  disable txn layer alert
ERT

_DISABLE_UNDO_T  :  disable tablespace alerts for UNDO tablespaces
ABLESPACE_ALERT
S

_DISABLE_WAIT_S  :  Disable wait state
TATE

_DISCRETE_TRANS  :  enable OLTP mode
ACTIONS_ENABLED

_DISKMON_PIPE_N  :  DiSKMon skgznp pipe name
AME

_DISK_SECTOR_SI  :  if TRUE, OSD sector size could be overridden
ZE_OVERRIDE

_DISPATCHER_RAT  :  scale to display rate statistic (100ths of a second)
E_SCALE

_DISPATCHER_RAT  :  time-to-live for rate statistic (100ths of a second)
E_TTL

_DISTINCT_VIEW_  :  enables unnesting of in subquery into distinct view
UNNESTING

_DISTRIBUTED_RE  :  number of seconds RECO holds outbound connections open
COVERY_CONNECTI
ON_HOLD_TIME

_DLMTRACE        :  Trace string of global enqueue type(s)
_DML_BATCH_ERRO  :  number or error handles allocated for DML in batch mode
R_LIMIT

_DML_FREQUENCY_  :  Control DML frequency tracking
TRACKING

_DML_FREQUENCY_  :  Control automatic advance and broadcast of DML
TRACKING_ADVANC     frequencies
E

_DML_FREQUENCY_  :  Number of slots to use for DML frequency tracking
TRACKING_SLOTS

_DML_FREQUENCY_  :  Time length of each slot for DML frequency tracking
TRACKING_SLOT_T
IME

_DML_MONITORING  :  enable modification monitoring
_ENABLED

_DM_DMF_DETAILS  :  set dm dmf details compatibility version
_COMPATIBILITY

_DM_ENABLE_LEGA  :  revert dmf output types to pre-12.1.0.1
CY_DMF_OUTPUT_T
YPES

_DM_MAX_SHARED_  :  max percentage of the shared pool to use for a mining
POOL_PCT            model

_DNFS_RDMA_ENAB  :  Enable dNFS RDMA transfers
LE

_DNFS_RDMA_MAX   :  Maximum size of dNFS RDMA transfer
_DNFS_RDMA_MIN   :  Minimum size of dNFS RDMA transfer
_DOMAIN_INDEX_B  :  maximum number of rows from one call to domain index
ATCH_SIZE           fetch routine

_DOMAIN_INDEX_D  :  maximum number of rows for one call to domain index dml
ML_BATCH_SIZE       routines

_DRA_BMR_NUMBER  :  Maximum number of BMRs that can be done to a file
_THRESHOLD

_DRA_BMR_PERCEN  :  Maximum percentage of blocks in a file that can be
T_THRESHOLD         BMR-ed

_DRA_ENABLE_OFF  :  Enable the periodic creation of the offline dictionary
LINE_DICTIONARY     for DRA

_DRM_PARALLEL_F  :  if TRUE enables parallel drm freeze
REEZE

_DROP_FLASHBACK  :  Drop logical operations enqueue immediately during
_LOGICAL_OPERAT     flashback marker generation
IONS_ENQ

_DROP_STAT_SEGM  :  drop ilm statistics segment
ENT

_DROP_TABLE_GRA  :  drop_table_granule
NULE

_DROP_TABLE_OPT  :  reduce SGA memory use during drop of a partitioned
IMIZATION_ENABL     table
ED

_DSC_FEATURE_LE  :  controls the feature level for deferred segment
VEL                 creation

_DSKM_HEALTH_CH  :  DiSKMon health check counter
ECK_CNT

_DSS_CACHE_FLUS  :  enable full cache flush for parallel execution
H

_DS_ENABLE_AUTO  :  Dynamic Sampling Service Autonomous Transaction control
_TXN                parameter

_DS_IOCOUNT_IOS  :  Dynamic Sampling Service defaults: #IOs and IO Size
IZE

_DS_PARSE_MODEL  :  Dynamic Sampling Service Parse Model control parameter
_DTREE_AREA_SIZ  :  size of Decision Tree Classification work area
E

_DTREE_BINNING_  :  Decision Tree Binning Enabled
ENABLED

_DTREE_BINTEST_  :  Decision Tree Binning Test ID
ID

_DTREE_COMPRESS  :  Decision Tree Using Compressed Bitmaps Enabled
BMP_ENABLED

_DTREE_MAX_SURR  :  maximum number of surrogates
OGATES

_DTREE_PRUNING_  :  Decision Tree Pruning Enabled
ENABLED

_DUMMY_INSTANCE  :  dummy instance started by RMAN
_DUMP_10261_LEV  :  Dump level for event 10261, 1=>minimal dump 2=>top pga
EL                  dump

_DUMP_COMMON_SU  :  dump common subexpressions
BEXPRESSIONS

_DUMP_CONNECT_B  :  dump connect by loop error message into trc file
Y_LOOP_DATA

_DUMP_CURSOR_HE  :  dump comp/exec heap sizes to tryace file
AP_SIZES

_DUMP_INTERVAL_  :  trace dump time interval limit (in seconds)
LIMIT

_DUMP_MAX_LIMIT  :  max number of dump within dump interval
_DUMP_QBC_TREE   :  dump top level query parse tree to trace
_DUMP_RCVR_IPC   :  if TRUE enables IPC dump at instance eviction time
_DUMP_SCN_INCRE  :  Dumps scn increment stack per session
MENT_STACK

_DUMP_SYSTEM_ST  :  scope of sysstate dump during instance termination
ATE_SCOPE

_DUMP_TRACE_SCO  :  scope of trace dump during a process crash
PE

_DYNAMIC_RLS_PO  :  rls policies are dynamic
LICIES

_DYNAMIC_STATS_  :  delay threshold (in seconds) between sending statistics
THRESHOLD           messages

_EIGHTEENTH_SPA  :  eighteenth spare parameter – string
RE_PARAMETER

_EIGHTH_SPARE_P  :  eighth spare parameter – integer
ARAMETER

_ELEVENTH_SPARE  :  eleventh spare parameter – integer
_PARAMETER

_ELIMINATE_COMM  :  enables elimination of common sub-expressions
ON_SUBEXPR

_EMON_MAX_ACTIV  :  maximum open connections to clients per emon
E_CONNECTIONS

_EMON_OUTBOUND_  :  timeout for completing connection set up to clients
CONNECT_TIMEOUT

_EMON_POOL_INC   :  increment in EMON slaves per pool type
_EMON_POOL_MAX   :  maximum number of EMON slaves per pool type
_EMON_POOL_MIN   :  minimum number of EMON slaves per pool type
_EMON_REGULAR_N  :  number of EMON slaves doing regular database
TFN_SLAVES          notifications

_EMON_SEND_TIME  :  send timeout after which the client is unregistered
OUT

_EMX_CONTROL     :  EM Express control (internal use only)
_EMX_MAX_SESSIO  :  Maximum number of sessions in the EM Express cache
NS

_EMX_SESSION_TI  :  Session timeout (sec) in the EM Express cache
MEOUT

_ENABLE_12G_BFT  :  enable 12g bigfile tablespace
_ENABLE_ASYNCVI  :  enable asynch vectored I/O
O

_ENABLE_AUTOMAT  :  if 1, Automated Maintenance Is Enabled
IC_MAINTENANCE

_ENABLE_AUTOMAT  :  Automatic SQL Tuning Advisory enabled parameter
IC_SQLTUNE

_ENABLE_BLOCK_L  :  enable block level recovery
EVEL_TRANSACTIO
N_RECOVERY

_ENABLE_CHECK_T  :  enable checking of corruption caused by canceled
RUNCATE             truncate

_ENABLE_COLUMNA  :  Enable Columnar Flash Cache Rewrite
R_CACHE

_ENABLE_CSCN_CA  :  enable commit SCN caching for all transactions
CHING

_ENABLE_DDL_WAI  :  use this to turn off ddls with wait semantics
T_LOCK

_ENABLE_DEFAULT  :  enable default implementation of hard affinity osds
_AFFINITY

_ENABLE_DEFAULT  :  Enable Default Tablespace Utilization Threshold for
_TEMP_THRESHOLD     UNDO Tablespaces

_ENABLE_DEFAULT  :  Enable Default Tablespace Utilization Threshold for
_UNDO_THRESHOLD     TEMPORARY Tablespaces

_ENABLE_DML_LOC  :  enable dml lock escalation against partitioned tables
K_ESCALATION        if TRUE

_ENABLE_EDITION  :  enable editions for all users
S_FOR_USERS

_ENABLE_EXCHANG  :  use check constraints on the table for validation
E_VALIDATION_US
ING_CHECK

_ENABLE_FAST_RE  :  enable fast refresh after move tablespace
F_AFTER_MV_TBS

_ENABLE_FFW      :  FAL FORWARDING
_ENABLE_FLASH_L  :  Enable Exadata Smart Flash Logging
OGGING

_ENABLE_FRONT_E  :  enable front end view optimization
ND_VIEW_OPTIMIZ
ATION

_ENABLE_HASH_OV  :  TRUE – enable hash cluster overflow based on SIZE
ERFLOW

_ENABLE_HEATMAP  :  heatmap related – to be used by oracle dev only
_INTERNAL

_ENABLE_HWM_SYN  :  enable HWM synchronization
C

_ENABLE_IEE_STA  :  enables IEE stats gathering
TS

_ENABLE_ILM_FLU  :  Enable ILM Stats Flush
SH_STATS

_ENABLE_ILM_TES  :  Enable Test ILM Stats Flush
TFLUSH_STATS

_ENABLE_KQF_PUR  :  Enable KQF fixed runtime table purge
GE

_ENABLE_LGPG_DE  :  Enable LGPG debug mode
BUG

_ENABLE_LIST_IO  :  Enable List I/O
_ENABLE_MIDTIER  :  enable midtier affinity metrics processing
_AFFINITY

_ENABLE_MINSCN_  :  enable/disable minscn optimization for CR
CR

_ENABLE_NATIVEN  :  Enable skgxp driver usage for native net
ET_TCPIP

_ENABLE_NUMA_IN  :  Enable NUMA interleave mode
TERLEAVE

_ENABLE_NUMA_OP  :  Enable NUMA specific optimizations
TIMIZATION

_ENABLE_NUMA_SU  :  Enable NUMA support and optimizations
PPORT

_ENABLE_OBJ_QUE  :  enable object queues
UES

_ENABLE_OFFLOAD  :  Enable offloaded writes for Unit Test
ED_WRITES

_ENABLE_ONLINE_  :  Allow online index creation algorithm without S DML
INDEX_WITHOUT_S     lock
_LOCKING

_ENABLE_PLUGGAB  :  Enable Pluggable Database
LE_DATABASE

_ENABLE_QUERY_R  :  mv rewrite on remote table/view
EWRITE_ON_REMOT
E_OBJS

_ENABLE_REDO_GL  :  LGWR post globally on write
OBAL_POST

_ENABLE_REFRESH  :  enable or disable MV refresh scheduling (revert to 9.2
_SCHEDULE           behavior)

_ENABLE_RELIABL  :  Enable reliable latch waits
E_LATCH_WAITS

_ENABLE_RENAME_  :  enable RENAME-clause using ALTER USER statement
USER

_ENABLE_RLB      :  enable RLB metrics processing
_ENABLE_ROW_SHI  :  use the row shipping optimization for wide table
PPING               selects

_ENABLE_SB_DETE  :  Split Brain Detection
CTION

_ENABLE_SCHEMA_  :  enable DDL operations (e.g. creation) involving schema
SYNONYMS            synonyms

_ENABLE_SCN_WAI  :  use this to turn off scn wait interface in kta
T_INTERFACE

_ENABLE_SECUREF  :  Enable securefile flashback optimization
ILE_FLASHBACK_O
PT

_ENABLE_SEPARAB  :  enable/disable separable transactions
LE_TRANSACTIONS

_ENABLE_SHARED_  :  temporary to disable/enable kgh policy
POOL_DURATIONS

_ENABLE_SHARED_  :  Enable shared server vector I/O
SERVER_VECTOR_I
O

_ENABLE_SPACEBG  :  enable space management background task
_ENABLE_SPACE_P  :  enable space pre-allocation
REALLOCATION

_ENABLE_TABLESP  :  enable tablespace alerts
ACE_ALERTS

_ENABLE_TYPE_DE  :  enable type dependent selectivity estimates
P_SELECTIVITY

_ENDPROT_CHUNK_  :  chunk comment for selective overrun protection
COMMENT

_ENDPROT_HEAP_C  :  heap comment for selective overrun protection
OMMENT

_ENDPROT_SUBHEA  :  selective overrun protection for subeheaps
PS

_ENQUEUE_DEADLO  :  enable deadlock detection on all global enqueues
CK_DETECT_ALL_G
LOBAL_LOCKS

_ENQUEUE_DEADLO  :  deadlock scan interval
CK_SCAN_SECS

_ENQUEUE_DEADLO  :  requests with timeout <= this will not have deadlock
CK_TIME_SEC         detection

_ENQUEUE_DEBUG_  :  debug enqueue multi instance
MULTI_INSTANCE

_ENQUEUE_HASH    :  enqueue hash table length
_ENQUEUE_HASH_C  :  enqueue hash chain latches
HAIN_LATCHES

_ENQUEUE_LOCKS   :  locks for managed enqueues
_ENQUEUE_PARANO  :  enable enqueue layer advanced debugging checks
IA_MODE_ENABLED

_ENQUEUE_RESOUR  :  resources for enqueues
CES

_ENQUEUE_SYNC_R  :  max number of times the bg process to retry synchronous
ETRY_ATTEMPTS       enqueue open if it failed because master could not
allocate memory

_ENQUEUE_SYNC_S  :  simulate master instance running out of memory when
IM_MEM_ERROR        synchronously getting a remotely mastered enqueue

_EVOLVE_PLAN_BA  :  Level of detail to show in plan verification/evolution
SELINE_REPORT_L     report
EVEL

_EVT_SYSTEM_EVE  :  disable system event propagation
NT_PROPAGATION

_EXPAND_AGGREGA  :  expand aggregates
TES

_EXPLAIN_REWRIT  :  allow additional messages to be generated during
E_MODE              explain rewrite

_EXTENDED_PRUNI  :  do runtime pruning in iterator if set to TRUE
NG_ENABLED

_EXTERNAL_SCN_L  :  High delta SCN threshold in seconds
OGGING_THRESHOL
D_SECONDS

_EXTERNAL_SCN_R  :  external SCN rejection delta threshold in minutes
EJECTION_DELTA_
THRESHOLD_MINUT
ES

_EXTERNAL_SCN_R  :  Lag in hours between max allowed SCN and an external
EJECTION_THRESH     SCN
OLD_HOURS

_FAIRNESS_THRES  :  number of times to CR serve before downgrading lock
HOLD

_FAIR_REMOTE_CV  :  if TRUE enables fair remote convert
T

_FASTPIN_ENABLE  :  enable reference count based fast pins
_FAST_CURSOR_RE  :  use more memory in order to get faster execution
EXECUTE

_FAST_DUAL_ENAB  :  enable/disable fast dual
LED

_FAST_FULL_SCAN  :  enable/disable index fast full scan
_ENABLED

_FAST_INDEX_MAI  :  fast global index maintenance during PMOPs
NTENANCE

_FAST_PSBY_CONV  :  Enable fast physical standby conversion
ERSION

_FBDA_BUSY_PERC  :  flashback archiver busy percentage
ENTAGE

_FBDA_DEBUG_ASS  :  flashback archiver debug assert for testing
ERT

_FBDA_DEBUG_MOD  :  flashback archiver debug event for testing
E

_FBDA_GLOBAL_BS  :  flashback archiver global barrier scn lag
CN_LAG

_FBDA_INLINE_PE  :  flashback archiver inline percentage
RCENTAGE

_FBDA_RAC_INACT  :  flashback archiver rac inactive limit
IVE_LIMIT

_FG_IORM_SLAVES  :  ForeGround I/O slaves for IORM
_FG_LOG_CHECKSU  :  Checksum redo in foreground process
M

_FG_SYNC_SLEEP_  :  Log file sync via usleep
USECS

_FIC_ALGORITHM_  :  Set Frequent Itemset Counting Algorithm
SET

_FIC_AREA_SIZE   :  size of Frequent Itemset Counting work area
_FIC_MAX_LENGTH  :  Frequent Itemset Counting Maximum Itemset Length
_FIC_MIN_BMSIZE  :  Frequent Itemset Counting Minimum BITMAP Size
_FIC_OUTOFMEM_C  :  Frequent Itemset Counting Out Of Memory Candidates
ANDIDATES           Generation

_FIFTEENTH_SPAR  :  fifteenth spare parameter – integer
E_PARAMETER

_FIFTH_SPARE_PA  :  fifth spare parameter – integer
RAMETER

_FILEMAP_DIR     :  FILEMAP directory
_FILE_SIZE_INCR  :  Amount of file size increase increment, in bytes
EASE_INCREMENT

_FIRST_K_ROWS_D  :  enable the use of dynamic proration of join
YNAMIC_PRORATIO     cardinalities
N

_FIRST_SPARE_PA  :  first spare parameter – integer
RAMETER

_FIX_CONTROL     :  bug fix control parameter
_FLASHBACK_11.1  :  use 11.1 flashback block new optimization scheme
_BLOCK_NEW_OPT

_FLASHBACK_ALLO  :  Allow enabling flashback on noarchivelog database
W_NOARCHIVELOG

_FLASHBACK_ARCH  :  flashback archiver table partition size
IVER_PARTITION_
SIZE

_FLASHBACK_BARR  :  Flashback barrier interval in seconds
IER_INTERVAL

_FLASHBACK_COPY  :  Number of flashback copy latches
_LATCHES

_FLASHBACK_DATA  :  Run Flashback Database in test mode
BASE_TEST_ONLY

_FLASHBACK_DELE  :  Amount of flashback log (in MB) to delete in one
TE_CHUNK_MB         attempt

_FLASHBACK_DYNA  :  enable flashback enable code path
MIC_ENABLE

_FLASHBACK_DYNA  :  Simulate failures during dynamic enable
MIC_ENABLE_FAIL
URE

_FLASHBACK_ENAB  :  Flashback enable read ahead
LE_RA

_FLASHBACK_FORM  :  Chunk mega-bytes for formatting flashback logs using
AT_CHUNK_MB         sync write

_FLASHBACK_FORM  :  Chunk mega-bytes for formatting flashback logs using
AT_CHUNK_MB_DWR     delayed write
ITE

_FLASHBACK_FUZZ  :  Use flashback fuzzy barrier
Y_BARRIER

_FLASHBACK_GENE  :  flashback generation buffer size
RATION_BUFFER_S
IZE

_FLASHBACK_HINT  :  Flashback hint barrier percent
_BARRIER_PERCEN
T

_FLASHBACK_LOGF  :  flashback logfile enqueue timeout for opens
ILE_ENQUEUE_TIM
EOUT

_FLASHBACK_LOG_  :  Specify Flashback log I/O error behavior
IO_ERROR_BEHAVI
OR

_FLASHBACK_LOG_  :  Minimum flashback log size
MIN_SIZE

_FLASHBACK_LOG_  :  flashback log rac balance factor
RAC_BALANCE_FAC
TOR

_FLASHBACK_LOG_  :  Flashback log size
SIZE

_FLASHBACK_MARK  :  Enable flashback database marker cache
ER_CACHE_ENABLE
D

_FLASHBACK_MARK  :  Size of flashback database marker cache
ER_CACHE_SIZE

_FLASHBACK_MAX_  :  Maximum flashback log size in bytes (OS limit)
LOG_SIZE

_FLASHBACK_MAX_  :  Maximum number of flashback logs per flashback thread
N_LOG_PER_THREA
D

_FLASHBACK_MAX_  :  Maximum time span between standby recovery sync for
STANDBY_SYNC_SP     flashback
AN

_FLASHBACK_N_LO  :  Desired number of flashback logs per flashback thread
G_PER_THREAD

_FLASHBACK_PREP  :  Prepare Flashback logs in the background
ARE_LOG

_FLASHBACK_SIZE  :  Size new flashback logs based on average redo log size
_BASED_ON_REDO

_FLASHBACK_STAN  :  Flashback standby barrier interval in seconds
DBY_BARRIER_INT
ERVAL

_FLASHBACK_VALI  :  validate flashback pointers in controlfile for 11.2.0.2
DATE_CONTROLFIL     database
E

_FLASHBACK_VERB  :  Print verbose information about flashback database
OSE_INFO

_FLASHBACK_WRIT  :  Flashback writer loop limit before it returns
E_MAX_LOOP_LIMI
T

_FLUSH_ILM_STAT  :  flush ilm stats
S

_FLUSH_PLAN_IN_  :  Plan is being flushed from an AWR flush SQL
AWR_SQL

_FLUSH_REDO_TO_  :  Flush redo to standby test event parameter
STANDBY

_FLUSH_UNDO_AFT  :  if TRUE, flush undo buffers after TX recovery
ER_TX_RECOVERY

_FORCE_ARCH_COM  :  Archive Compress all newly created compressed tables
PRESS

_FORCE_DATEFOLD  :  force use of trunc for datefolding rewrite
_TRUNC

_FORCE_HASH_JOI  :  force hash join to spill to disk
N_SPILL

_FORCE_HSC_COMP  :  compress all newly created tables
RESS

_FORCE_LOGGING_  :  force logging during upgrade mode
IN_UPGRADE

_FORCE_OLTP_COM  :  OLTP Compress all newly created compressed tables
PRESS

_FORCE_OLTP_UPD  :  OLTP Compressed row optimization on update
ATE_OPT

_FORCE_RCV_INFO  :  Force recovery info ping to stdby
_PING

_FORCE_REWRITE_  :  control new query rewrite features
ENABLE

_FORCE_SLAVE_MA  :  Force slave mapping for intra partition loads
PPING_INTRA_PAR
T_LOADS

_FORCE_SYS_COMP  :  Sys compress
RESS

_FORCE_TEMPTABL  :  executes concatenation of rollups using temp tables
ES_FOR_GSETS

_FORCE_TMP_SEGM  :  Force tmp segment loads
ENT_LOADS

_FORWARDED_2PC_  :  auto-tune threshold for two-phase commit rate across
THRESHOLD           RAC instances

_FOURTEENTH_SPA  :  fourteenth spare parameter – integer
RE_PARAMETER

_FOURTH_SPARE_P  :  fourth spare parameter – integer
ARAMETER

_FRAME_CACHE_TI  :  number of seconds a cached frame page stay in cache.
ME

_FULL_DIAG_ON_R  :  rim nodes have full DIA* function
IM

_FULL_PWISE_JOI  :  enable full partition-wise join when TRUE
N_ENABLED

_FUSION_SECURIT  :  Fusion Security
Y

_GBY_HASH_AGGRE  :  enable group-by and aggregation using hash scheme
GATION_ENABLED

_GBY_ONEKEY_ENA  :  enable use of one comparison of all group by keys
BLED

_GCR_CPU_MIN_FR  :  minimum amount of free CPU to flag an anomaly
EE

_GCR_ENABLE_HIG  :  if TRUE, GCR may kill foregrounds under high load
H_CPU_KILL

_GCR_ENABLE_HIG  :  if TRUE, GCR may enable a RM plan under high load
H_CPU_RM

_GCR_ENABLE_HIG  :  if TRUE, GCR may boost bg priority under high load
H_CPU_RT

_GCR_ENABLE_HIG  :  if TRUE, GCR may kill foregrounds under high memory
H_MEMORY_KILL       load

_GCR_ENABLE_NEW  :  if FALSE, revert to old drm load metric
_DRM_CHECK

_GCR_ENABLE_STA  :  if FALSE, revert to old cpu load metric
TISTICAL_CPU_CH
ECK

_GCR_HIGH_CPU_T  :  minimum amount of CPU process must consume to be kill
HRESHOLD            target

_GCR_HIGH_MEMOR  :  minimum amount of Memory process must consume to be
Y_THRESHOLD         kill target

_GCR_MAX_RT_PRO  :  maximum number of RT DLM processes allowed by GCR
CS

_GCR_MEM_MIN_FR  :  minimum amount of free memory to flag an anomaly
EE

_GCR_USE_CSS     :  if FALSE, GCR wont register with CSS nor use any CSS
feature

_GCS_DISABLE_RE  :  disable remote client/shadow handles
MOTE_HANDLES

_GCS_DISABLE_SK  :  if TRUE, disable skip close optimization in remastering
IP_CLOSE_REMAST
ERING

_GCS_DISABLE_SW  :  if TRUE, disable switching to local role with a writer
ITCH_ROLE_WITH_
WRITER

_GCS_FAST_RECON  :  if TRUE, enable fast reconfiguration for gcs locks
FIG

_GCS_LATCHES     :  number of gcs resource hash latches to be allocated per
LMS process

_GCS_MIN_SLAVES  :  if non zero, it enables the minimum number of gcs
slaves

_GCS_PKEY_HISTO  :  number of pkey remastering history
RY

_GCS_PROCESS_IN  :  if TRUE, process gcs requests during instance recovery
_RECOVERY

_GCS_RESERVED_R  :  allocate the number of reserved resources in
ESOURCES            reconfiguration

_GCS_RESERVED_S  :  allocate the number of reserved shadows in
HADOWS              reconfiguration

_GCS_RESOURCES   :  number of gcs resources to be allocated
_GCS_RES_HASH_B  :  number of gcs resource hash buckets to be allocated
UCKETS

_GCS_RES_PER_BU  :  number of gcs resource per hash bucket
CKET

_GCS_SHADOW_LOC  :  number of pcm shadow locks to be allocated
KS

_GCS_TESTING     :  GCS testing parameter
_GC_AFFINITY_AC  :  if TRUE, save the time we acquired an affinity lock
QUIRE_TIME

_GC_AFFINITY_LO  :  if TRUE, enable object affinity
CKING

_GC_AFFINITY_LO  :  if TRUE, get affinity locks
CKS

_GC_AFFINITY_RA  :  dynamic object affinity ratio
TIO

_GC_ASYNC_SEND   :  send blocks asynchronously
_GC_BYPASS_READ  :  if TRUE, modifications bypass readers
ERS

_GC_CHECK_BSCN   :  if TRUE, check for stale blocks
_GC_COALESCE_RE  :  if TRUE, coalesce recovery reads
COVERY_READS

_GC_CPU_TIME     :  if TRUE, record the gc cpu time
_GC_CR_SERVER_R  :  if TRUE, cr server waits for a read to complete
EAD_WAIT

_GC_DEFER_PING_  :  if TRUE, restrict deferred ping to index blocks only
INDEX_ONLY

_GC_DEFER_TIME   :  how long to defer pings for hot buffers in milliseconds
_GC_DELTA_PUSH_  :  if delta >= K bytes, compress before push
COMPRESSION

_GC_DELTA_PUSH_  :  max delta level for delta push
MAX_LEVEL

_GC_DELTA_PUSH_  :  objects which use delta push
OBJECTS

_GC_DISABLE_S_L  :  if TRUE, disable S lock BRR ping check for lost write
OCK_BRR_PING_CH     protect
ECK

_GC_DOWN_CONVER  :  if TRUE, down-convert lock after recovery
T_AFTER_KEEP

_GC_ELEMENT_PER  :  global cache element percent
CENT

_GC_ESCALATE_BI  :  if TRUE, escalates create a bid
D

_GC_FG_MERGE     :  if TRUE, merge pi buffers in the foreground
_GC_FG_SPIN_TIM  :  foreground msgq spin time
E

_GC_FLUSH_DURIN  :  if TRUE, flush during affinity
G_AFFINITY

_GC_FUSION_COMP  :  compress fusion blocks if there is free space
RESSION

_GC_GLOBAL_CHEC  :  if TRUE, enable global checkpoint scn
KPOINT_SCN

_GC_GLOBAL_CPU   :  global cpu checks
_GC_GLOBAL_LRU   :  turn global lru off, make it automatic, or turn it on
_GC_GLOBAL_LRU_  :  global lru touch count
TOUCH_COUNT

_GC_GLOBAL_LRU_  :  global lru touch time in seconds
TOUCH_TIME

_GC_INTEGRITY_C  :  set the integrity check level
HECKS

_GC_KEEP_RECOVE  :  if TRUE, make single instance crash recovery buffers
RY_BUFFERS          current

_GC_LATCHES      :  number of latches per LMS process
_GC_LOG_FLUSH    :  if TRUE, flush redo log before a current block transfer
_GC_LONG_QUERY_  :  threshold for long running query
THRESHOLD

_GC_MAXIMUM_BID  :  maximum number of bids which can be prepared
S

_GC_MAX_DOWNCVT  :  maximum downconverts to process at one time
_GC_NO_FAIRNESS  :  if TRUE, no fairness if we serve a clone
_FOR_CLONES

_GC_OBJECT_QUEU  :  maximum length for an object queue
E_MAX_LENGTH

_GC_OVERRIDE_FO  :  if TRUE, try to override force-cr requests
RCE_CR

_GC_PERSISTENT_  :  if TRUE, enable persistent read-mostly locking
READ_MOSTLY

_GC_POLICY_MINI  :  dynamic object policy minimum activity per minute
MUM

_GC_POLICY_TIME  :  how often to make object policy decisions in minutes
_GC_READ_MOSTLY  :  if TRUE, optimize flushes for read mostly objects
_FLUSH_CHECK

_GC_READ_MOSTLY  :  if TRUE, enable read-mostly locking
_LOCKING

_GC_SANITY_CHEC  :  if TRUE, sanity check CR buffers
K_CR_BUFFERS

_GC_SAVE_CLEANO  :  if TRUE, save cleanout to apply later
UT

_GC_SPLIT_FLUSH  :  if TRUE, flush index split redo before rejecting bast
_GC_STATISTICS   :  if TRUE, kcl statistics are maintained
_GC_TEMP_AFFINI  :  if TRUE, enable global temporary affinity
TY

_GC_TRANSFER_RA  :  dynamic object read-mostly transfer ratio
TIO

_GC_UNDO_AFFINI  :  if TRUE, enable undo affinity
TY

_GC_UNDO_BLOCK_  :  if TRUE, enable undo block disk reads
DISK_READS

_GC_VECTOR_READ  :  if TRUE, vector read current buffers
_GENERALIZED_PR  :  controls extensions to partition pruning for general
UNING_ENABLED       predicates

_GES_DD_DEBUG    :  if 1 or higher enables GES deadlock detection debug
diagnostics

_GES_DEFAULT_LM  :  default lmds for enqueue hashing
DS

_GES_DESIGNATED  :  designated master for GES and GCS resources
_MASTER

_GES_DIAGNOSTIC  :  if TRUE enables GES diagnostics
S

_GES_DIAGNOSTIC  :  systemstate level on global enqueue diagnostics blocked
S_ASM_DUMP_LEVE     by ASM
L

_GES_DIRECT_FRE  :  if TRUE, free each resource directly to the freelist
E

_GES_DIRECT_FRE  :  string of resource types(s) to directly free to the
E_RES_TYPE          freelist

_GES_DUMP_OPEN_  :  if TRUE, dump open locks for the LCK process during
LOCKS               shutdown

_GES_FGGL        :  DLM fg grant lock on/off
_GES_FREEABLE_R  :  if TRUE, free dynamic resource chunks which are
ES_CHUNK_FREE       freeable

_GES_FREEABLE_R  :  time interval for freeing freeable dynamic resource
ES_CHUNK_FREE_I     chunks
NTERVAL

_GES_GATHER_RES  :  if TRUE, gather resource reuse statistics
_REUSE_STATS

_GES_HASH_GROUP  :  enqueue hash table groups
S

_GES_HEALTH_CHE  :  if greater than 0 enables GES system health check
CK

_GES_LMD_MAPPIN  :  enqueue to lmd mapping
G

_GES_NRES_DIVID  :  how to divide number of enqueue resources among hash
E                   tables

_GES_NUM_BLOCKE  :  number of blockers to be killed for hang resolution
RS_TO_KILL

_GES_RESOURCE_M  :  enable different level of ges res memory optimization
EMORY_OPT

_GES_SERVER_PRO  :  number of background global enqueue server processes
CESSES

_GLOBALINDEX_PN  :  enables filter for global index with partition extended
UM_FILTER_ENABL     syntax
ED

_GLOBAL_HANG_AN  :  the interval at which global hang analysis is run
ALYSIS_INTERVAL
_SECS

_GRANT_SECURE_R  :  Disallow granting of SR to NSR
OLE

_GROUPBY_NOPUSH  :  groupby nopushdown cut ratio
DOWN_CUT_RATIO

_GROUPBY_ORDERB  :  groupby/orderby don’t combine threshold
Y_COMBINE

_GSM             :  GSM descriptions
_GSM_CONFIG_VER  :  version of gsm config
S

_GSM_CPU_THRESH  :  CPU busy threshold
_GSM_DRV_INTERV  :  metric derived values interval
AL

_GSM_MAX_INSTAN  :  maximum number of instances per database in gsm cloud
CES_PER_DB

_GSM_MAX_NUM_RE  :  maximum number of regions in gsm cloud
GIONS

_GSM_REGION_LIS  :  List of GSM Regions
T

_GSM_SRLAT_THRE  :  Single block read latency threshold
SH

_GSM_THRESH_RES  :  threshold resource percentage
PCT

_GSM_THRESH_ZON  :  threshold zone
E

_GS_ANTI_SEMI_J  :  enable anti/semi join for the GS query
OIN_ALLOWED

_GWM_SPARE1      :  gsm spare 1
_GWM_SPARE2      :  gsm spare 2
_GWM_SPARE3      :  gsm spare 3
_HANG_ANALYSIS_  :  hang analysis num call stacks
NUM_CALL_STACKS

_HANG_BASE_FILE  :  Number of trace files for the normal base trace file
_COUNT

_HANG_BASE_FILE  :  File space limit for current normal base trace file
_SPACE_LIMIT

_HANG_BOOL_SPAR  :  Hang Management 1
E1

_HANG_CROSS_BOU  :  Hang Management Cross Boundary detection
NDARY_HANG_DETE
CTION_ENABLED

_HANG_DELAY_RES  :  Hang Management delays hang resolution for library
OLUTION_FOR_LIB     cache
CACHE

_HANG_DETECTION  :  Hang Management detection
_ENABLED

_HANG_DETECTION  :  Hang Management detection interval in seconds
_INTERVAL

_HANG_HANG_ANAL  :  if TRUE hang manager outputs hang analysis hang chains
YZE_OUTPUT_HANG
_CHAINS

_HANG_HILOAD_PR  :  Hang Management high load or promoted ignored hang
OMOTED_IGNORED_     count
HANG_COUNT

_HANG_HIPRIOR_S  :  Hang Management high priority session attribute list
ESSION_ATTRIBUT
E_LIST

_HANG_IGNORED_H  :  Time in seconds ignored hangs must persist after
ANGS_INTERVAL       verification

_HANG_IGNORED_H  :  Hang Management ignored hang count
ANG_COUNT

_HANG_INT_SPARE  :  Hang Management 2
2

_HANG_LOG_VERIF  :  Hang Management log verified hangs to alert log
IED_HANGS_TO_AL
ERT

_HANG_LONG_WAIT  :  Long session wait time threshold in seconds
_TIME_THRESHOLD

_HANG_LWS_FILE_  :  Number of trace files for long waiting sessions
COUNT

_HANG_LWS_FILE_  :  File space limit for current long waiting session trace
SPACE_LIMIT         file

_HANG_MONITOR_A  :  Time in seconds ignored hangs must persist after
RCHIVING_RELATE     verification
D_HANG_INTERVAL

_HANG_MSG_CHECK  :  enable hang graph message checksum
SUM_ENABLED

_HANG_RESOLUTIO  :  Hang Management hang resolution allow archiving issue
N_ALLOW_ARCHIVI     termination
NG_ISSUE_TERMIN
ATION

_HANG_RESOLUTIO  :  Hang Management hang resolution confidence promotion
N_CONFIDENCE_PR
OMOTION

_HANG_RESOLUTIO  :  Hang Management hang resolution global hang confidence
N_GLOBAL_HANG_C     promotion
ONFIDENCE_PROMO
TION

_HANG_RESOLUTIO  :  Hang Management hang resolution policy
N_POLICY

_HANG_RESOLUTIO  :  Hang Management hang resolution promote process
N_PROMOTE_PROCE     termination
SS_TERMINATION

_HANG_RESOLUTIO  :  Hang Management hang resolution scope
N_SCOPE

_HANG_SIGNATURE  :  Hang Signature List matched output frequency
_LIST_MATCH_OUT
PUT_FREQUENCY

_HANG_STATISTIC  :  Hang Management statistics collection interval in
S_COLLECTION_IN     seconds
TERVAL

_HANG_STATISTIC  :  Hang Management statistics collection moving average
S_COLLECTION_MA     alpha
_ALPHA

_HANG_STATISTIC  :  Hang Management statistics high IO percentage threshold
S_HIGH_IO_PERCE
NTAGE_THRESHOLD

_HANG_TERMINATE  :  Hang Management terminates sessions allowing replay
_SESSION_REPLAY
_ENABLED

_HANG_VERIFICAT  :  Hang Management verification interval in seconds
ION_INTERVAL

_HARD_PROTECTIO  :  if TRUE enable H.A.R.D specific format changes
N

_HASHOPS_PREFET  :  maximum no of rows whose relevant memory locations are
CH_SIZE             prefetched

_HASH_JOIN_ENAB  :  enable/disable hash join
LED

_HASH_MULTIBLOC  :  number of blocks hash join will read/write at once
K_IO_COUNT

_HB_REDO_MSG_IN  :  BOC HB redo message interval in ms
TERVAL

_HEATMAP_FORMAT  :  heatmap related – to be used by oracle dev only
_1BLOCK

_HEATMAP_MIN_MA  :  Internal testing only
XSIZE

_HEUR_DEADLOCK_  :  the heuristic wait time per node for deadlock
RESOLUTION_SECS     resolution

_HIGHRES_DRIFT_  :  allowed highres timer drift for VKTM
ALLOWED_SEC

_HIGHTHRESHOLD_  :  high threshold undo_retention in seconds
UNDORETENTION

_HIGH_PRIORITY_  :  High Priority Process Name Mask
PROCESSES

_HIGH_SERVER_TH  :  high server thresholds
RESHOLD

_HJ_BIT_FILTER_  :  hash-join bit filtering threshold (0 always enabled)
THRESHOLD

_HM_ANALYSIS_OR  :  the oradebug system state level for hang manager hang
ADEBUG_SYS_DUMP     analysis
_LEVEL

_HM_XM_ENABLED   :  If TRUE, DIA0 allows message exchanges across DB/ASM
boundary

_HWM_SYNC_THRES  :  HWM synchronization threshold in percentage
HOLD

_IDLE_SESSION_K  :  enables or disables resource manager session idle limit
ILL_ENABLED         checks

_IDL_CONVENTION  :  enable conventional index maintenance for insert direct
AL_INDEX_MAINTE     load
NANCE

_IDXRB_ROWINCR   :  proportionality constant for dop vs. rows in index
rebuild

_IGNORE_DESC_IN  :  ignore DESC in indexes, sort those columns ascending
_INDEX              anyhow

_IGNORE_EDITION  :  ignore schema’s edition-enabled status during EV
_ENABLED_FOR_EV     creation
_CREATION

_IGNORE_FG_DEPS  :  ignore fine-grain dependencies during invalidation
_ILMFLUSH_STAT_  :  ILM flush statistics limit – Internal testing only
LIMIT

_ILMSET_STAT_LI  :  ILM set statistics limit – Internal testing only
MIT

_ILMSTAT_MEMLIM  :  Percentage of shared pool for use by ILM Statistics
IT

_ILM_FILTER_TIM  :  Upper filter time for ILM block compression
E

_ILM_FILTER_TIM  :  Lower filter time for ILM block compression
E_LOWER

_ILM_MEM_LIMIT   :  percentage of the max shared pool heat-map can use –
internal

_ILM_POLICY_NAM  :  User specified ILM policy name
E

_IMAGE_REDO_GEN  :  Image redo generation delay in centi-seconds (direct
_DELAY              write mode)

_IMMEDIATE_COMM  :  if TRUE, propagate commit SCN immediately
IT_PROPAGATION

_IMPROVED_OUTER  :  improved outer-join cardinality calculation
JOIN_CARD

_IMPROVED_ROW_L  :  enable the improvements for computing the average row
ENGTH_ENABLED       length

_IMR_ACTIVE      :  Activate Instance Membership Recovery feature
_IMR_AVOID_DOUB  :  Avoid device voting for CSS reconfig during IMR
LE_VOTING

_IMR_CONTROLFIL  :  IMR controlfile access wait time in seconds
E_ACCESS_WAIT_T
IME

_IMR_DEVICE_TYP  :  Type of device to be used by IMR
E

_IMR_DISKVOTE_I  :  IMR disk voting implementation method
MPLEMENTATION

_IMR_DISK_VOTIN  :  Maximum wait for IMR disk voting (seconds)
G_INTERVAL

_IMR_EVICTED_ME  :  IMR issue evicted member kill after a wait
MBER_KILL

_IMR_EVICTED_ME  :  IMR evicted member kill wait time in seconds
MBER_KILL_WAIT

_IMR_EXTRA_RECO  :  Extra reconfiguration wait in seconds
NFIG_WAIT

_IMR_HIGHLOAD_T  :  IMR system highload threshold
HRESHOLD

_IMR_MAX_RECONF  :  Maximum Reconfiguration delay (seconds)
IG_DELAY

_IMR_RR_HOLDER_  :  IMR max time instance is allowed to hold RR lock in
KILL_TIME           seconds

_IMR_SPLITBRAIN  :  Maximum wait for split-brain resolution (seconds)
_RES_WAIT

_IMR_SYSTEMLOAD  :  Perform the system load check during IMR
_CHECK

_IMU_POOLS       :  in memory undo pools
_INCREMENTAL_RE  :  minimum number of writes for incremental recovery ckpt
COVERY_CKPT_MIN     every second
_BATCH

_INDEX_JOIN_ENA  :  enable the use of index joins
BLED

_INDEX_LOAD_BUF  :  index load buf oltp sacrifice pct
_OLTP_SACRIFICE
_PCT

_INDEX_LOAD_BUF  :  index load buf and comp oltp under-estimation pct
_OLTP_UNDER_PCT

_INDEX_MAX_INC_  :  max itl expand percentage soft limit during index
TRANS_PCT           insert

_INDEX_PARTITIO  :  Enables large extent allocation for partitioned indices
N_LARGE_EXTENTS

_INDEX_PREFETCH  :  index prefetching factor
_FACTOR

_INDEX_SCAN_CHE  :  check and skip corrupt blocks during index scans
CK_SKIP_CORRUPT

_INDEX_SCAN_CHE  :  check stopkey during index range scans
CK_STOPKEY

_INIT_GRANULE_I  :  number of granules to process for deferred cache
NTERVAL

_INIT_SQL_FILE   :  File containing SQL statements to execute upon database
creation

_INJECT_STARTUP  :  inject fault in the startup code
_FAULT

_INLINE_SQL_IN_  :  inline SQL in PL/SQL
PLSQL

_INPLACE_UPDATE  :  inplace update retry for ora1551
_RETRY

_INQUIRY_RETRY_  :  if greater than 0 enables inquiry retry after specified
INTERVAL            interval

_INSERT_ENABLE_  :  during parallel inserts high water marks are brokered
HWM_BROKERED

_INST_LOCKING_P  :  period an instance can retain a newly acquired level1
ERIOD               bitmap

_INTERCONNECT_C  :  if TRUE, checksum interconnect blocks
HECKSUM

_INTRAPART_PDML  :  Enable intra-partition updates/deletes
_ENABLED

_INTRAPART_PDML  :  Enable intra-partition updates/deletes with random
_RANDOMLOCAL_EN     local dist
ABLED

_IN_MEMORY_TBS_  :  FALSE – disable fast path for alter tablespace read
SEARCH              only

_IN_MEMORY_UNDO  :  Make in memory undo for top level transactions
_IOCALIBRATE_IN  :  iocalibrate init I/Os per process
IT_IOS

_IOCALIBRATE_MA  :  iocalibrate max I/Os per process
X_IOS

_IOQ_FANIN_MULT  :  IOQ miss count before a miss exception
IPLIER

_IORM_TOUT       :  IORM scheduler timeout value in msec
_IOR_SERIALIZE_  :  inject fault in the ior serialize code
FAULT

_IOSLAVE_BATCH_  :  Per attempt IOs picked
COUNT

_IOSLAVE_ISSUE_  :  IOs issued before completion check
COUNT

_IO_INTERNAL_TE  :  I/O internal testing parameter
ST

_IO_OSD_PARAM    :  OSD specific parameter
_IO_OUTLIER_THR  :  Latency threshold for io_outlier table
ESHOLD

_IO_RESOURCE_MA  :  io resource manager always on
NAGER_ALWAYS_ON

_IO_SHARED_POOL  :  Size of I/O buffer pool from SGA
_SIZE

_IO_SLAVES_DISA  :  Do not use I/O slaves
BLED

_IO_STATISTICS   :  if TRUE, ksfd I/O statistics are collected
_IPC_FAIL_NETWO  :  Simulate cluster network failer
RK

_IPC_TEST_FAILO  :  Test transparent cluster network failover
VER

_IPC_TEST_MULT_  :  simulate multiple cluster networks
NETS

_IPDDB_ENABLE    :  Enable IPD/DB data collection
_JOB_QUEUE_INTE  :  Wakeup interval in seconds for job queue co-ordinator
RVAL

_K2Q_LATCHES     :  number of k2q latches
_KA_ALLOW_REENA  :  reenability of kernel accelerator service after disable
BLE

_KA_COMPATIBILI  :  kernel accelerator compatibility operation requirement
TY_REQUIREMENT

_KA_DOORBELL     :  kernel accelerator doorbell mode
_KA_LOCKS_PER_S  :  locks per sector in kernel accelerator
ECTOR

_KA_MODE         :  kernel accelerator mode
_KA_MSG_REAP_CO  :  maximum number of KA messages to receive and process
UNT                 per wait

_KA_PBATCH_MESS  :  kernel accelerator perform pbatch messages
AGES

_KCFIS_AUTOMEM_  :  Set auto memory management control for kcfis memory
LEVEL               allocation

_KCFIS_BLOCK_DU  :  Smart IO block dump level
MP_LEVEL

_KCFIS_CACHING_  :  enable kcfis intra-scan session caching
ENABLED

_KCFIS_CELLOFLS  :  Enable offload server usage for passthru operations
RV_PASSTHRU_ENA
BLED

_KCFIS_CELLOFLS  :  Enable offload server usage for offload operations
RV_USAGE_ENABLE
D

_KCFIS_CELL_PAS  :  Allow dataonly passthru for smart scan
STHRU_DATAONLY

_KCFIS_CELL_PAS  :  Do not perform smart IO filtering on the cell
STHRU_ENABLED

_KCFIS_CELL_PAS  :  Enable automatic passthru mode when cell CPU util is
STHRU_FROMCPU_E     too high
NABLED

_KCFIS_CONTROL1  :  Kcfis control1
_KCFIS_CONTROL2  :  Kcfis control2
_KCFIS_CONTROL3  :  Kcfis control3
_KCFIS_CONTROL4  :  Kcfis control4
_KCFIS_CONTROL5  :  Kcfis control5
_KCFIS_CONTROL6  :  Kcfis control6
_KCFIS_DISABLE_  :  Don’t use platform-specific decryption on the storage
PLATFORM_DECRYP     cell
TION

_KCFIS_DUMP_COR  :  Dump any corrupt blocks found during smart IO
RUPT_BLOCK

_KCFIS_FAST_RES  :  Enable smart scan optimization for fast response (first
PONSE_ENABLED       rows)

_KCFIS_FAST_RES  :  Fast response – The size of the first IO in logical
PONSE_INITIOSIZ     blocks
E

_KCFIS_FAST_RES  :  Fast response – (next IO size = current IO size * this
PONSE_IOSIZEMUL     parameter)
T

_KCFIS_FAST_RES  :  Fast response – the number of IOs after which smartIO
PONSE_THRESHOLD     is used

_KCFIS_FAULT_CO  :  Fault Injection Control
NTROL

_KCFIS_IOREQS_T  :  Enable Smart IO requests throttling
HROTTLE_ENABLED

_KCFIS_IO_PREFE  :  Smart IO prefetch size for a cell
TCH_SIZE

_KCFIS_KEPT_IN_  :  Enable usage of cellsrv flash cache for kept objects
CELLFC_ENABLED

_KCFIS_LARGE_PA  :  enable large payload to be passed to cellsrv
YLOAD_ENABLED

_KCFIS_MAX_CACH  :  Sets the maximum number of kcfis sessions cached
ED_SESSIONS

_KCFIS_MAX_OUT_  :  Sets the maximum number of outstanding translations in
TRANSLATIONS        kcfis

_KCFIS_NONKEPT_  :  Enable use of cellsrv flash cache for non-kept objects
IN_CELLFC_ENABL
ED

_KCFIS_OSS_IO_S  :  KCFIS OSS I/O size
IZE

_KCFIS_QM_PRIOR  :  Prioritize Quaranitine Manager system plan
ITIZE_SYS_PLAN

_KCFIS_QM_USER_  :  Quaranitine Manager user plan name
PLAN_NAME

_KCFIS_RDBMS_BL  :  Use block IO instead of smart IO in the smart IO module
OCKIO_ENABLED       on RDBMS

_KCFIS_READ_BUF  :  KCFIS Read Buffer (per session) memory limit in bytes
FER_LIMIT

_KCFIS_SPAWN_DE  :  Decides whether to spawn the debugger at kcfis
BUGGER              initialize

_KCFIS_STATS_LE  :  sets kcfis stats level
VEL

_KCFIS_STORAGEI  :  Debug mode for storage index on the cell
DX_DIAG_MODE

_KCFIS_STORAGEI  :  Don’t use storage index optimization on the storage
DX_DISABLED         cell

_KCFIS_TEST_CON  :  kcfis tst control1
TROL1

_KCFIS_TRACE_BU  :  KCFIS tracing bucket size in bytes
CKET_SIZE

_KCL_COMMIT      :  if TRUE, call kjbcommit
_KCL_CONSERVATI  :  if TRUE, conservatively log flush before CR serving
VE_LOG_FLUSH

_KCL_DEBUG       :  if TRUE, record le history
_KCL_INDEX_SPLI  :  if TRUE, reject pings on blocks in middle of a split
T

_KDBL_ENABLE_PO  :  allocate dbas after populating data buffers
ST_ALLOCATION

_KDIC_SEGARR_SZ  :  size threshold for segmented arrays for
seg_info_kdicctx

_KDIS_REJECT_LE  :  b+tree level to enable rejection limit
VEL

_KDIS_REJECT_LI  :  #block rejections in space reclamation before segment
MIT                 extension

_KDIS_REJECT_OP  :  enable rejection heuristic for branch splits
S

_KDIZOLTP_UNCOM  :  kdizoltp uncomp sentinal frequency
PSENTINAL_FREQ

_KDI_AVOID_BLOC  :  avoid index block checking on sensitive opcodes
K_CHECKING

_KDLF_READ_FLAG  :  kdlf read flag
_KDLI_ALLOW_COR  :  allow corrupt filesystem_logging data blocks during
RUPT                read/write

_KDLI_BUFFER_IN  :  use buffer injection for CACHE [NO]LOGGING lobs
JECT

_KDLI_CACHEABLE  :  minimum lob length for inode cacheability
_LENGTH

_KDLI_CACHE_INO  :  cache inode state across calls
DE

_KDLI_CACHE_REA  :  minimum lob size for cache->nocache read (0 disables
D_THRESHOLD         heuristic)

_KDLI_CACHE_SIZ  :  maximum #entries in inode cache
E

_KDLI_CACHE_VER  :  verify cached inode via deserialization
IFY

_KDLI_CACHE_WRI  :  minimum lob size for cache->nocache write (0 disables
TE_THRESHOLD        heuristic)

_KDLI_CHECKPOIN  :  do not invalidate cache buffers after write
T_FLUSH

_KDLI_DBC        :  override db_block_checking setting for securefiles
_KDLI_DELAY_FLU  :  delay flushing cache writes to direct-write lobs
SHES

_KDLI_DESCN_ADJ  :  coalesce extents with deallocation scn adjustment
_KDLI_FLUSH_CAC  :  flush cache-reads data blocks after load
HE_READS

_KDLI_FLUSH_INJ  :  flush injected buffers of CACHE NOLOGGING lobs before
ECTIONS             commit

_KDLI_FORCE_CR   :  force CR when reading data blocks of direct-write lobs
_KDLI_FORCE_CR_  :  force CR when reading metadata blocks of direct-write
META                lobs

_KDLI_FORCE_STO  :  force storage settings for all lobs
RAGE

_KDLI_FULL_READ  :  maximum lob size for full readahead
AHEAD_THRESHOLD

_KDLI_INJECT_AS  :  inject asserts into the inode
SERT

_KDLI_INJECT_BA  :  buffer injection batch size [1, KCBNEWMAX]
TCH

_KDLI_INJECT_CR  :  inject crashes into the inode
ASH

_KDLI_INLINE_XF  :  allow inline transformed lobs
M

_KDLI_INODE_PRE  :  inline inode evolution preference (data, headless, lhb)
FERENCE

_KDLI_INPLACE_O  :  maximum inplace overwrite size (> chunksize)
VERWRITE

_KDLI_ITREE_ENT  :  #entries in lhb/itree blocks (for testing only)
RIES

_KDLI_MEMORY_PR  :  trace accesses to inode memory outside kdli API
OTECT               functions

_KDLI_MTS_SO     :  use state objects in shared server for asyncIO
pipelines

_KDLI_ONEBLK     :  allocate chunks as single blocks
_KDLI_PREALLOCA  :  preallocation mode for lob growth
TION_MODE

_KDLI_PREALLOCA  :  percentage preallocation [0 .. inf) for lob growth
TION_PCT

_KDLI_RALC_LENG  :  lob length threshold to trigger rounded allocations
TH

_KDLI_RALC_ROUN  :  rounding granularity for rounded allocations
DING

_KDLI_RCI_LOBMA  :  #entries in RCI lobmap before migration to lhb
P_ENTRIES

_KDLI_READAHEAD  :  shared/cached IO readahead limit
_LIMIT

_KDLI_READAHEAD  :  shared/cached IO readahead strategy
_STRATEGY

_KDLI_RECENT_SC  :  use recent (not dependent) scns for block
N                   format/allocation

_KDLI_RESHAPE    :  reshape an inode to inline or headless on length
truncation

_KDLI_SAFE_CALL  :  invoke inode read/write callbacks safely
BACKS

_KDLI_SIO_ASYNC  :  asynchronous shared IO
_KDLI_SIO_BACKO  :  use exponential backoff when attempting SIOP
FF                  allocations

_KDLI_SIO_BPS    :  maximum blocks per IO slot
_KDLI_SIO_DOP    :  degree-of-parallelism in the SIO keep pool
_KDLI_SIO_FBWRI  :  percentage of buffer used for direct writes in
TE_PCT              flashback-db

_KDLI_SIO_FGIO   :  reap asynchronous IO in the foreground
_KDLI_SIO_FILEO  :  shared IO fileopen mode: datasync vs nodatasync vs
PEN                 async

_KDLI_SIO_FLUSH  :  enable shared IO pool operations
_KDLI_SIO_FREE   :  free IO buffers when not in active use
_KDLI_SIO_MIN_R  :  shared IO pool read threshold
EAD

_KDLI_SIO_MIN_W  :  shared IO pool write threshold
RITE

_KDLI_SIO_NBUFS  :  maximum #IO buffers to allocate per session
_KDLI_SIO_NIODS  :  maximum #IO descriptors to allocate per session
_KDLI_SIO_ON     :  enable shared IO pool operations
_KDLI_SIO_PGA    :  use PGA allocations for direct IO
_KDLI_SIO_PGA_T  :  PGA allocations come from toplevel PGA heap
OP

_KDLI_SIO_STRAT  :  shared IO strategy: block vs. extent
EGY

_KDLI_SIO_WRITE  :  percentage of buffer used for direct writes
_PCT

_KDLI_SMALL_CAC  :  size limit of small inode cache
HE_LIMIT

_KDLI_SORT_DBAS  :  sort dbas during chunkification
_KDLI_SPACE_CAC  :  maximum size of the space cache in #blocks
HE_LIMIT

_KDLI_SQUEEZE    :  compact lobmap extents with contiguous dbas
_KDLI_STOP_BSZ   :  undocumented parameter for internal use only
_KDLI_STOP_DBA   :  undocumented parameter for internal use only
_KDLI_STOP_FSZ   :  undocumented parameter for internal use only
_KDLI_STOP_NIO   :  undocumented parameter for internal use only
_KDLI_STOP_TSN   :  undocumented parameter for internal use only
_KDLI_TIMER_DMP  :  dump inode timers on session termination
_KDLI_TIMER_TRC  :  trace inode timers to uts/tracefile
_KDLI_TRACE      :  inode trace level
_KDLI_VLL_DIREC  :  use skip-navigation and direct-positioning in
T                   vll-domain

_KDLU_MAX_BUCKE  :  UTS kdlu bucket size
T_SIZE

_KDLU_MAX_BUCKE  :  UTS kdlu bucket size for mts
T_SIZE_MTS

_KDLU_TRACE_LAY  :  UTS kdlu per-layer trace level
ER

_KDLU_TRACE_SYS  :  UTS system dump
TEM

_KDLWP_FLUSH_TH  :  WGC flush threshold in bytes
RESHOLD

_KDLW_ENABLE_KS  :  enable ksi locking for lobs
I_LOCKING

_KDLW_ENABLE_WR  :  enable lob write gathering for sql txns
ITE_GATHERING

_KDLXP_CMP_SUBU  :  size of compression sub-unit in bytes
NIT_SIZE

_KDLXP_DEDUP_FL  :  deduplication flush threshold in bytes
USH_THRESHOLD

_KDLXP_DEDUP_HA  :  secure hash algorithm for deduplication – only on
SH_ALGO             SecureFiles

_KDLXP_DEDUP_IN  :  deduplication pct size increase by which inlining
L_PCTFREE           avoided

_KDLXP_DEDUP_PR  :  deduplication prefix hash threshold in bytes
EFIX_THRESHOLD

_KDLXP_DEDUP_WA  :  deduplication length to allow write-append
PP_LEN

_KDLXP_LOBCMPAD  :  enable adaptive compression – only on SecureFiles
P

_KDLXP_LOBCMPLE  :  Default securefile compression
VEL

_KDLXP_LOBCMPRC  :  Default securefile compression map version
IVER

_KDLXP_LOBCOMPR  :  enable lob compression – only on SecureFiles
ESS

_KDLXP_LOBDEDUP  :  enable lob deduplication – only on SecureFiles
LICATE

_KDLXP_LOBDEDUP  :  enable deduplicate validate – only on SecureFiles
VALIDATE

_KDLXP_LOBENCRY  :  enable lob encryption – only on SecureFiles
PT

_KDLXP_MINCMP    :  minimum comp ratio in pct – only on SecureFiles
_KDLXP_MINCMPLE  :  minimum loblen to compress – only on SecureFiles
N

_KDLXP_MINXFM_S  :  minimum transformation size in bytes
IZE

_KDLXP_SPARE1    :  deduplication spare 1
_KDLXP_UNCMP     :  lob data uncompressed – only on SecureFiles
_KDLXP_XFMCACHE  :  enable xfm cache – only on SecureFiles
_KDTGSP_RETRIES  :  max number of retries in kdtgsp if space returns same
block

_KDT_BUFFERING   :  control kdt buffering for conventional inserts
_KDU_ARRAY_DEPT  :  array update retry recursion depth limits
H

_KDZ_HCC_FLAGS   :  Miscellaneous HCC flags
_KDZ_HCC_TRACK_  :  Enable rowid tracking during updates
UPD_RIDS

_KDZ_PRED_NROWS  :  Number of rows to predicate at a time in kdzt
_KDZ_PROJ_NROWS  :  Number of rows to project at a time in kdzt
_KD_SYMTAB_CHK   :  enable or disable symbol table integrity block check
_KEBM_NSTRIKES   :  kebm # strikes to auto suspend an action
_KEBM_SUSPENSIO  :  kebm auto suspension time in seconds
N_TIME

_KECAP_CACHE_SI  :  Workload Replay INTERNAL parameter used to set memory
ZE                  usage in  Application Replay

_KEEP_REMOTE_CO  :  remote column size does not get modified
LUMN_SIZE

_KERNEL_MESSAGE  :  kernel message network driver
_NETWORK_DRIVER

_KES_PARSE_MODE  :  SQL Tune/SPA KES Layer Parse Model control parameter
L

_KFFMAP_HASH_SI  :  size of kffmap_hash table
ZE

_KFFMLK_HASH_SI  :  size of kffmlk_hash table
ZE

_KFFMOP_CHUNKS   :  number of chunks of kffmop’s
_KFFMOP_HASH_SI  :  size of kffmop_hash table
ZE

_KFM_DISABLE_SE  :  disable set fence calls and revert to default (process
T_FENCE             fence)

_KGHDSIDX_COUNT  :  max kghdsidx count
_KGLSIM_MAXMEM_  :  max percentage of shared pool size to be used for KGL
PERCENT             advice

_KGL_BUCKET_COU  :  Library cache hash table bucket count
NT                  (2^_kgl_bucket_count * 256)

_KGL_CAP_HD_ALO  :  capture stacks for library cache handle allocation
_STACKS

_KGL_CLUSTER_LO  :  Library cache support for cluster lock
CK

_KGL_CLUSTER_LO  :  Library cache support for cluster lock read mostly
CK_READ_MOSTLY      optimization

_KGL_CLUSTER_PI  :  Library cache support for cluster pins
N

_KGL_DEBUG       :  Library cache debugging
_KGL_FIXED_EXTE  :  fixed extent size for library cache memory allocations
NTS

_KGL_HASH_COLLI  :  Library cache name hash collision possible
SION

_KGL_HEAP_SIZE   :  extent size for library cache heap 0
_KGL_HOT_OBJECT  :  Number of copies for the hot object
_COPIES

_KGL_KQR_CAP_SO  :  capture stacks for library and row cache state objects
_STACKS

_KGL_LARGE_HEAP  :  maximum heap size before KGL writes warnings to the
_WARNING_THRESH     alert log
OLD

_KGL_LATCH_COUN  :  number of library cache latches
T

_KGL_MESSAGE_LO  :  RAC message lock count
CKS

_KGL_MIN_CACHED  :  Minimum cached SO count. If > 1 can help find SO
_SO_COUNT           corruptions

_KGL_TIME_TO_WA  :  time to wait for locks and pins before timing out
IT_FOR_LOCKS

_KGSB_THRESHOLD  :  threshold size for base allocator
_SIZE

_KGX_LATCHES     :  # of mutex latches if CAS is not supported.
_KILL_CONTROLFI  :  enable killing controlfile enqueue blocker on timeout
LE_ENQUEUE_BLOC
KER

_KILL_DIAGNOSTI  :  timeout delay in seconds before killing enqueue blocker
CS_TIMEOUT

_KILL_ENQUEUE_B  :  if greater than 0 enables killing enqueue blocker
LOCKER

_KILL_JAVA_THRE  :  Kill Java threads and do sessionspace migration at end
ADS_ON_EOC          of call

_KILL_SESSION_D  :  Process dump on kill session immediate
UMP

_KJAC_FORCE_OUT  :  if TRUE, enable to run force outcome on the current
COME_CURRENT_SE     session
SSION

_KJDD_CALL_STAC  :  Enables printing of short call stack with the WFG
K_DUMP_ENABLED

_KJDD_WFG_DUMP_  :  To control the way Wait-For_Graph is dumped
CNTRL

_KJLTMAXGT       :  record latch requests that takes longer than this many
us

_KJLTMAXHT       :  record latch reqeust that are held longer than this
many us

_KJLTON          :  track DLM latch usage on/off
_KKFI_TRACE      :  trace expression substitution
_KKS_FREE_CURSO  :  percentage of cursor stats buckets to scan on each
R_STAT_PCT          load, in 1/10th of a percent

_KOKLI_CACHE_SI  :  Size limit of ADT Table Lookup Cache
ZE

_KOKLN_CURRENT_  :  Make all LOB reads for this session ‘current’ reads
READ

_KOLFUSESLF      :  allow kolf to use slffopen
_KQDSN_MAX_INST  :  maximum bits used for instance value in sequence
ANCE_BITS           partition

_KQDSN_MIN_INST  :  minimum bits used for instance value in sequence
ANCE_BITS           partition

_KQDSN_PARTITIO  :  ratio of instance to session bits in sequence partition
N_RATIO

_KQL_SUBHEAP_TR  :  tracing level for library cache subheap level pins
ACE

_KQR_OPTIMISTIC  :  optimistic reading of row cache objects
_READS

_KSB_RESTART_CL  :  process uptime for restarts
EAN_TIME

_KSB_RESTART_PO  :  process restart policy times in seconds
LICY_TIMES

_KSDXDOCMD_DEFA  :  default timeout for internal oradebug commands
ULT_TIMEOUT_MS

_KSDXDOCMD_ENAB  :  if TRUE ksdxdocmd* invocations are enabled
LED

_KSDXW_CINI_FLG  :  ksdxw context initialization flag
_KSDXW_NBUFS     :  ksdxw number of buffers in buffered mode
_KSDXW_NUM_PGW   :  number of watchpoints on a per-process basis
_KSDXW_NUM_SGW   :  number of watchpoints to be shared by all processes
_KSDXW_STACK_DE  :  number of PCs to collect in the stack when watchpoint
PTH                 is hit

_KSDX_CHARSET_R  :  ratio between the system and oradebug character set
ATIO

_KSD_TEST_PARAM  :  KSD test parmeter
_KSE_DIE_TIMEOU  :  amount of time a dying process is spared by PMON (in
T                   centi-secs)

_KSE_PC_TABLE_S  :  kse pc table cache size
IZE

_KSE_SIGNATURE_  :  number of entries in the kse stack signature cache
ENTRIES

_KSE_SIGNATURE_  :  number of stack frames to cache per kse signature
LIMIT

_KSE_SNAP_RING_  :  should error snap ring entries show a short stack trace
RECORD_STACK

_KSE_SNAP_RING_  :  ring buffer to debug internal error 17090
SIZE

_KSE_TRACE_INT_  :  enables soft assert of KGECLEAERERROR is cleares an
MSG_CLEAR           interrupt message

_KSFD_VERIFY_WR  :  verify asynchronous writes issued through ksfd
ITE

_KSIPC_LIBIPC_P  :  over-ride default location of libipc
ATH

_KSIPC_MODE      :  ksipc mode
_KSIPC_SPARE_PA  :  ksipc spare param 1
RAM1

_KSIPC_SPARE_PA  :  ksipc spare param 2
RAM2

_KSIPC_WAIT_FLA  :  tune ksipcwait
GS

_KSI_CLIENTLOCK  :  if TRUE, DLM-clients can provide the lock memory
S_ENABLED

_KSI_TRACE       :  KSI trace string of lock type(s)
_KSI_TRACE_BUCK  :  memory tracing: use ksi-private or rdbms-shared bucket
ET

_KSI_TRACE_BUCK  :  size of the KSI trace bucket
ET_SIZE

_KSMB_DEBUG      :  ksmb debug flags
_KSMD_PROTECT_M  :  KSMD protect mode for catching stale access
ODE

_KSMG_GRANULE_L  :  granule locking status
OCKING_STATUS

_KSMG_GRANULE_S  :  granule size in bytes
IZE

_KSMG_LOCK_CHEC  :  timeout action interval in minutes
K_INTERVAL

_KSMG_LOCK_REAC  :  repeat count for acquisition of locks
QUIRE_COUNT

_KSMLSAF         :  KSM log alloc and free
_KSM_POST_SGA_I  :  seconds to delay instance startup at sga initialization
NIT_NOTIF_DELAY     (post)
_SECS

_KSM_PRE_SGA_IN  :  seconds to delay instance startup at sga initialization
IT_NOTIF_DELAY_     (pre)
SECS

_KSPOL_TAC_TIME  :  timeouts for TAC registerd by kspol
OUT

_KSR_UNIT_TEST_  :  number of ksr unit test processes
PROCESSES

_KSS_CALLSTACK_  :  state object callstack trace type
TYPE

_KSS_QUIET       :  if TRUE access violations during kss dumps are not
recorded

_KSUITM_ADDON_T  :  command to execute when dead processes don’t go away
RCCMD

_KSUITM_DONT_KI  :  delay inst. termination to allow processes to dump
LL_DUMPER

_KSU_DIAG_KILL_  :  number of seconds ksuitm waits before killing diag
TIME

_KSVPPKTMODE     :  ksv internal pkt test
_KSV_DYNAMIC_FL  :  ksv dynamic flags 1 – override default behavior
AGS1

_KSV_MAX_SPAWN_  :  bg slave spawn failure limit
FAIL_LIMIT

_KSV_POOL_HANG_  :  bg slave pool terminate timeout
KILL_TO

_KSV_POOL_WAIT_  :  bg slave pool wait limit
TIMEOUT

_KSV_SLAVE_EXIT  :  slave exit timeout
_TIMEOUT

_KSV_SPAWN_CONT  :  control all spawning of background slaves
ROL_ALL

_KSV_STATIC_FLA  :  ksv static flags 1 – override default behavior
GS1

_KSXP_COMPAT_FL  :  ksxp compat flags
AGS

_KSXP_CONTROL_F  :  modify ksxp behavior
LAGS

_KSXP_DIAGMODE   :  set to OFF to disable automatic slowsend diagnostics
_KSXP_DISABLE_C  :  disable CLSS interconnects
LSS

_KSXP_DISABLE_D  :  disable dynamic loadin of lib skgxp
YNAMIC_LOADING

_KSXP_DISABLE_I  :  disable ipc statistics
PC_STATS

_KSXP_DISABLE_R  :  disable possibility of starting rolling migration
OLLING_MIGRATIO
N

_KSXP_DUMP_TIME  :  set timeout for kjzddmp request
OUT

_KSXP_DYNAMIC_S  :  dynamic skgxp parameters
KGXP_PARAM

_KSXP_IF_CONFIG  :  ksxp if config flags
_KSXP_INIT_STAT  :  initial number arrays for ipc statistics
S_BKTS

_KSXP_LWIPC_ENA  :  enable lwipc for KSXP
BLED

_KSXP_MAX_STATS  :  max. arrays for ipc statistics
_BKTS

_KSXP_PING_ENAB  :  disable dynamic loadin of lib skgxp
LE

_KSXP_PING_POLL  :  max. arrays for ipc statistics
ING_TIME

_KSXP_REAPING    :  tune ksxp layer reaping limit
_KSXP_REPORTING  :  reporting process for KSXP
_PROCESS

_KSXP_SEND_TIME  :  set timeout for sends queued with the inter-instance
OUT                 IPC

_KSXP_SKGXPG_LA  :  last defined skgxpg parameter – ksxp
ST_PARAMETER

_KSXP_SKGXP_ANT  :  SKGXP ANT options
_OPTIONS

_KSXP_SKGXP_COM  :  over-ride default location of lib skgxp compat
PAT_LIBRARY_PAT
H

_KSXP_SKGXP_CTX  :  IPC debug options flags (RAC)
_FLAGS1

_KSXP_SKGXP_CTX  :  IPC debug options flags mask (RAC)
_FLAGS1MASK

_KSXP_SKGXP_DYN  :  IPC protocol override (RAC)
AMIC_PROTOCOL       (0/-1=*,2=UDP,3=RDS,!0x1000=ipc_X)

_KSXP_SKGXP_INE  :  limit SKGXP networks
TS

_KSXP_SKGXP_LIB  :  over-ride default location of lib skgxp
RARY_PATH

_KSXP_SKGXP_RGN  :  region socket limits (0xFFFFNNXX): F=flags, N=min,
_PORTS              X=max

_KSXP_SKGXP_SPA  :  ipc ksxp spare parameter 1
RE_PARAM1

_KSXP_SKGXP_SPA  :  ipc ksxp spare parameter 2
RE_PARAM2

_KSXP_SKGXP_SPA  :  ipc ksxp spare parameter 3
RE_PARAM3

_KSXP_SKGXP_SPA  :  ipc ksxp spare parameter 4
RE_PARAM4

_KSXP_SKGXP_SPA  :  ipc ksxp spare parameter 5
RE_PARAM5

_KSXP_STATS_MEM  :  limit ipc statistics memory. this parameter is a
_LMT                percentage value

_KSXP_TESTING    :  KSXP test parameter
_KSXP_UNIT_TEST  :  enable byte transformation unit test
_BYTE_TRANSFORM
ATION

_KSXP_WAIT_FLAG  :  tune ksxpwait
S

_KTB_DEBUG_FLAG  :  ktb-layer debug flags
S

_KTC_DEBUG       :  for ktc debug
_KTC_LATCHES     :  number of ktc latches
_KTILMSC_EXP     :  expiration time of ktilm segment cache (in second)
_KTSLJ_SEGEXT_M  :  segment pre-extension max size in MB (0: unlimited)
AX_MB

_KTSLJ_SEGEXT_R  :  segment pre-extension retry
ETRY

_KTSLJ_SEGEXT_W  :  segment pre-extension warning threshold in percentage
ARNING

_KTSLJ_SEGEXT_W  :  segment pre-extension warning threshold in MB
ARNING_MB

_KTSPSRCH_MAXSC  :  maximum segments supported by space search cache
_KTSPSRCH_MAXSK  :  space search cache rejection skip upper limit
IP

_KTSPSRCH_SCCHK  :  cleanout check time of space search cache
_KTSPSRCH_SCEXP  :  expiration time of space search cache
_KTST_RSS_MAX    :  maximum temp extents to be released across instance
_KTST_RSS_MIN    :  minimum temp extents to be released across instance
_KTST_RSS_RETRY  :  maximum retries of sort segment release
_KTTEXT_WARNING  :  tablespace pre-extension warning threshold in
percentage

_KTU_LATCHES     :  number of KTU latches
_KU_TRACE        :  datapump trace parameter
_KXDBIO_CTX_INI  :  initial count of KXDBIO state object
T_COUNT

_KXDBIO_DISABLE  :  KXDBIO Disable offload for the set opcodes.  Value is a
_OFFLOAD_OPCODE     Bitmap of    0x00000001 – disable cell to cell data
copy offload    0x00000002 – disable disk scrubbing
offload to cell    0x00000004 – disable offloaded
writes to cell

_KXDBIO_ENABLE_  :  KXDBIO Enable Dumb storage simulation for the set
DS_OPCODE           opcodes.

_KXDBIO_HCA_LOA  :  HCA loadavg threshold at which writes need to get
DAVG_THRESH         offloaded

_KXDBIO_UT_CTL   :  kxdbio unit test controls
_LARGE_POOL_MIN  :  minimum allocation size in bytes for the large
_ALLOC              allocation pool

_LAST_ALLOCATIO  :  period over which an instance can retain an active
N_PERIOD            level1 bitmap

_LATCH_CLASSES   :  latch classes override
_LATCH_CLASS_0   :  latch class 0
_LATCH_CLASS_1   :  latch class 1
_LATCH_CLASS_2   :  latch class 2
_LATCH_CLASS_3   :  latch class 3
_LATCH_CLASS_4   :  latch class 4
_LATCH_CLASS_5   :  latch class 5
_LATCH_CLASS_6   :  latch class 6
_LATCH_CLASS_7   :  latch class 7
_LATCH_MISS_STA  :  Sid of process for which to collect latch stats
T_SID

_LATCH_WAIT_LIS  :  Time to sleep on latch wait list until getting priority
T_PRI_SLEEP_SEC
S

_LDR_IO_SIZE     :  size of write IOs used during a load operation
_LDR_IO_SIZE2    :  size of write IOs used during a load operation of EHCC
with HWMB

_LDR_PGA_LIM     :  pga limit, beyond which new partition loads are delayed
_LDR_TEMPSEG_TH  :  amount to buffer prior to allocating temp segment
RESHOLD             (extent sizing)

_LEFT_NESTED_LO  :  enable random distribution method for left of
OPS_RANDOM          nestedloops

_LGWR_DELAY_WRI  :  LGWR write delay for debugging
TE

_LGWR_IO_OUTLIE  :  LGWR I/O outlier frequency
R

_LGWR_IO_SLAVES  :  LGWR I/O slaves
_LGWR_MAX_NS_WT  :  Maximum wait time for lgwr to allow NetServer to
progress

_LGWR_NS_NL_MAX  :  Variable to simulate network latency or buffer
threshold

_LGWR_NS_NL_MIN  :  Variable to simulate network latency or buffer
threshold

_LGWR_NS_SIM_ER  :  Variable to simulate errors lgwrns
R

_LGWR_POSTS_FOR  :  LGWR posts commit waiters for pending broadcasts
_PENDING_BCASTS

_LGWR_TA_SIM_ER  :  Variable to simulate errors lgwr true async
R

_LIBRARY_CACHE_  :  whether KGL advice should be turned on
ADVICE

_LIGHTWEIGHT_HD  :  Lightweight headers for redo
RS

_LIKE_WITH_BIND  :  treat LIKE predicate with bind as an equality predicate
_AS_EQUALITY

_LIMIT_ITLS      :  limit the number of ITLs in OLTP Compressed Tables
_LINUX_PREPAGE_  :  prepage large pages during allocation on Linux
LARGE_PAGES

_LMN_COMPRESSIO  :  suppl logging for compression enabled
N

_LM_ACTIVATE_LM  :  threshold value to activate an additional lms
S_THRESHOLD

_LM_ASM_ENQ_HAS  :  if TRUE makes ASM use enqueue master hashing for fusion
HING                locks

_LM_BATCH_COMPR  :  GES threshold to start compression on batch messages
ESSION_THRESHOL
D

_LM_BETTER_DDVI  :  GES better deadlock victim
CTIM

_LM_BIG_CLUSTER  :  enable certain big cluster optimizations in drm
_OPTIMIZATIONS

_LM_BROADCAST_R  :  Enable broadcast of highest held mode of resource.
ES

_LM_BROADCAST_R  :  Trace string of resource type(s)
ESNAME

_LM_CACHE_ALLOC  :  ratio of cached over allocated resources
ATED_RES_RATIO

_LM_CACHE_LVL0_  :  how often to cleanup level 0 cache res (in sec)
CLEANUP

_LM_CACHE_RES_C  :  percentage of cached resources should be cleanup
LEANUP

_LM_CACHE_RES_C  :  max number of batches of cached resources to free per
LEANUP_TRIES        cleanup

_LM_CACHE_RES_O  :  ges resource cache options
PTIONS

_LM_CACHE_RES_S  :  multiple of iniital res cache below which cleanup is
KIP_CLEANUP         skipped

_LM_CACHE_RES_T  :  cache resource: string of lock types(s)
YPE

_LM_CHECKSUM_BA  :  GES checksum batch messages
TCH_MSG

_LM_COMM_CHANNE  :  GES communication channel type
L

_LM_COMM_MSGQ_B  :  busy wait time in microsecond for msgq
USYWAIT

_LM_COMM_REAP_C  :  message reap count for receive
OUNT

_LM_COMM_TKTS_A  :  Ticket allocation addition factor
DD_FACTOR

_LM_COMM_TKTS_C  :  Weighted average calculation interval length (second)
ALC_PERIOD_LENG
TH

_LM_COMM_TKTS_M  :  Max number of periods used in weighted avearage
AX_PERIODS          calculation

_LM_COMM_TKTS_M  :  Time to wait before allowing an allocation decrease
IN_DECREASE_WAI
T

_LM_COMM_TKTS_M  :  Time to wait before allowing an allocation increase
IN_INCREASE_WAI
T

_LM_COMM_TKTS_M  :  Ticket allocation multiplication factor
ULT_FACTOR

_LM_COMM_TKTS_N  :  Null request frequency threshold (percentage)
ULLREQ_THRESHOL
D

_LM_COMPRESSION  :  GES compression scheme
_SCHEME

_LM_CONTIGUOUS_  :  number of contiguous blocks that will hash to the same
RES_COUNT           HV bucket

_LM_DD_IGNORE_N  :  if TRUE nodeadlockwait/nodeadlockblock options are
ODD                 ignored

_LM_DD_INTERVAL  :  dd time interval in seconds
_LM_DD_MAXDUMP   :  max number of locks to be dumped during dd validation
_LM_DD_MAX_SEAR  :  max dd search time per token
CH_TIME

_LM_DD_SCAN_INT  :  dd scan interval in seconds
ERVAL

_LM_DD_SEARCH_C  :  number of dd search per token get
NT

_LM_DEFERRED_MS  :  deferred message timeout
G_TIMEOUT

_LM_DRMOPT12     :  enable drm scan optimizations in 12
_LM_DRMOPT12_NO  :  enable drm latching optimizations in 12
LATCH

_LM_DRM_BATCH_T  :  time in seconds to wait to batch drm requests
IME

_LM_DRM_DISABLE  :  disable drm in different level
_LM_DRM_HILOAD_  :  drm high load threshold percentage
PERCENTAGE

_LM_DRM_LOWLOAD  :  drm low load threshold percentage
_PERCENTAGE

_LM_DRM_MAX_REQ  :  dynamic remastering maximum affinity requests processed
UESTS               together

_LM_DRM_MIN_INT  :  minimum interval in secs between two consecutive drms
ERVAL

_LM_DRM_OBJECT_  :  enable/disable object scan to force full table scan
SCAN                always

_LM_DRM_WINDOW   :  dynamic remastering bucket window size
_LM_DRM_XLATCH   :  dynamic remastering forced exclusive latches
_LM_DUMP_NULL_L  :  dump null lock in state dump
OCK

_LM_DYNAMIC_LMS  :  dynamic lms invocation
_LM_DYNAMIC_LOA  :  dynamic load adjustment
D

_LM_ENABLE_AFF_  :  enables affinity benefit computations if TRUE
BENEFIT_STATS

_LM_ENQUEUE_BLO  :  enqueue blocker dump timeout
CKER_DUMP_TIMEO
UT

_LM_ENQUEUE_BLO  :  enqueue blocker dump timeout count
CKER_DUMP_TIMEO
UT_CNT

_LM_ENQUEUE_BLO  :  enqueue blocker kill timeout
CKER_KILL_TIMEO
UT

_LM_ENQUEUE_FRE  :  Number of enqueue freelist
ELIST

_LM_ENQUEUE_TIM  :  enqueue suggested min timeout in seconds
EOUT

_LM_ENQ_LOCK_FR  :  Number of ges enqueue element freelist
EELIST

_LM_ENQ_RCFG     :  if TRUE enables enqueue reconfiguration
_LM_FDRM_STATS   :  gather full drm statistics
_LM_FILE_AFFINI  :  mapping between file id and master instance number
TY

_LM_FILE_READ_M  :  mapping between read-mostly file id and master instance
OSTLY               number

_LM_FREEZE_KILL  :  timeout for killing unfrozen processes in rcfg/drm
_TIME               freeze step

_LM_FREE_QUEUE_  :  GES free queue threshold
THRESHOLD

_LM_GLOBAL_POST  :  if TRUE deliver global posts to remote nodes
S

_LM_HASHTABLE_B  :  High element threshold in hash table bucket
KT_HIGH

_LM_HASHTABLE_B  :  Low element threshold in hash table bucket
KT_LOW

_LM_HASHTABLE_B  :  Threshold for hash table resizing
KT_THR

_LM_HB_ACCEPTAB  :  list of acceptable hang conditions in heartbeat check
LE_HANG_CONDITI
ON

_LM_HB_CALLSTAC  :  hb diagnostic call stack collection time in seconds
K_COLLECT_TIME

_LM_HB_DISABLE_  :  list of process names to be disabled in heartbeat check
CHECK_LIST

_LM_HB_ENABLE_A  :  to enable the wait analysis with acceptable condition
CL_CHECK            lists

_LM_HB_EXPONENT  :  heartbeat exponential hang time multiplier
IAL_HANG_TIME_F
ACTOR

_LM_HB_MAXIMUM_  :  maximum heartbeat hang report count
HANG_REPORT_COU
NT

_LM_HIGH_LOAD_S  :  high watermark system load percentage
YSLOAD_PERCENTA
GE

_LM_HIGH_LOAD_T  :  high load threshold parameter
HRESHOLD

_LM_IDLE_CONNEC  :  GES idle connection check
TION_CHECK

_LM_IDLE_CONNEC  :  GES idle connection check interval time
TION_CHECK_INTE
RVAL

_LM_IDLE_CONNEC  :  GES idle connection instance check callout
TION_INSTANCE_C
HECK_CALLOUT

_LM_IDLE_CONNEC  :  GES idle connection kill
TION_KILL

_LM_IDLE_CONNEC  :  GES idle connection max skip kill request
TION_KILL_MAX_S
KIPS

_LM_IDLE_CONNEC  :  GES maximum idle connection kill request ignore count
TION_MAX_IGNORE
_KILL_COUNT

_LM_IDLE_CONNEC  :  GES idle connection health quorum threshold
TION_QUORUM_THR
ESHOLD

_LM_KILL_FG_ON_  :  GES kill fg on IPC timeout
TIMEOUT

_LM_LHUPD_INTER  :  load and health update interval
VAL

_LM_LMD_WAITTIM  :  default wait time for lmd in centiseconds
E

_LM_LMON_NOWAIT  :  if TRUE makes lmon get nowait latches with timeout loop
_LATCH

_LM_LMS          :  number of background gcs server processes to start
_LM_LMS_OPT_PRI  :  enable freeslot lms priority optimization
ORITY

_LM_LMS_PRIORIT  :  frequency of LMS priority decisions in milliseconds
Y_CHECK_FREQUEN
CY

_LM_LMS_PRIORIT  :  enable lms priority modification
Y_DYNAMIC

_LM_LMS_RT_THRE  :  maximum number of real time lms processes on machine
SHOLD

_LM_LMS_SPIN     :  make lms not sleep
_LM_LMS_WAITTIM  :  default wait time for lms in centiseconds
E

_LM_LOCAL_HP_EN  :  use static file affinity for HP enqueue mastership
Q

_LM_LOCKS        :  number of enqueues configured for cluster database
_LM_LOW_LOAD_PE  :  low watermark percentage for load threshold
RCENTAGE

_LM_MASTER_WEIG  :  master resource weight for this instance
HT

_LM_MAX_LMS      :  max. number of background global cache server processes
_LM_MSG_BATCH_S  :  GES batch message size
IZE

_LM_MSG_CLEANUP  :  GES message buffer cleanup interval time
_INTERVAL

_LM_MSG_POOL_DU  :  GES message pool dump threshold in terms of buffer
MP_THRESHOLD        count

_LM_NODE_JOIN_O  :  cluster database node join optimization in reconfig
PT

_LM_NON_FAULT_T  :  disable cluster database fault-tolerance mode
OLERANT

_LM_NO_LH_CHECK  :  skip load and health check at decision points
_LM_NO_SYNC      :  skip reconfiguration/drm syncr/synca messaging
_LM_NUM_BNFT_ST  :  number of buckets in the benefit stats hash table
ATS_BUCKETS

_LM_NUM_PT_BUCK  :  number of buckets in the object affinity hash table
ETS

_LM_NUM_PT_LATC  :  number of latches in the object affinity hash table
HES

_LM_POSTEVENT_B  :  postevent buffer size
UFFER_SIZE

_LM_PREREGISTER  :  enqueue type that requires pre-registration to css
_CSS_RESTYPE

_LM_PROCESS_BAT  :  GES implicit process batching for IPC messages
CHING

_LM_PROCESS_LOC  :  limit on scanning process lock queue instead of
K_Q_SCAN_LIMIT      resource convert lock queue

_LM_PROCS        :  number of client processes configured for cluster
database

_LM_PROC_FREEZE  :  reconfiguration: process freeze timeout
_TIMEOUT

_LM_PSRCFG       :  enable pseudo reconfiguration
_LM_RAC_SPARE_D  :  rac parameter dp1
P1

_LM_RAC_SPARE_D  :  rac parameter dp10
P10

_LM_RAC_SPARE_D  :  rac parameter dp2
P2

_LM_RAC_SPARE_D  :  rac parameter dp3
P3

_LM_RAC_SPARE_D  :  rac parameter dp4
P4

_LM_RAC_SPARE_D  :  rac parameter dp5
P5

_LM_RAC_SPARE_D  :  rac parameter dp6
P6

_LM_RAC_SPARE_D  :  rac parameter dp7
P7

_LM_RAC_SPARE_D  :  rac parameter dp8
P8

_LM_RAC_SPARE_D  :  rac parameter dp9
P9

_LM_RAC_SPARE_P  :  rac parameter p1
1

_LM_RAC_SPARE_P  :  rac parameter p10
10

_LM_RAC_SPARE_P  :  rac parameter p2
2

_LM_RAC_SPARE_P  :  rac parameter p3
3

_LM_RAC_SPARE_P  :  rac parameter p4
4

_LM_RAC_SPARE_P  :  rac parameter p5
5

_LM_RAC_SPARE_P  :  rac parameter p6
6

_LM_RAC_SPARE_P  :  rac parameter p7
7

_LM_RAC_SPARE_P  :  rac parameter p8
8

_LM_RAC_SPARE_P  :  rac parameter p9
9

_LM_RCFG_TIMEOU  :  dlm reconfiguration timeout
T

_LM_RCVINST      :  designated instance to do instance recovery
_LM_RCVR_HANG_A  :  receiver hang allow time in seconds
LLOW_TIME

_LM_RCVR_HANG_C  :  to kill receiver hang at control file IO
FIO_KILL

_LM_RCVR_HANG_C  :  receiver hang check frequency in seconds
HECK_FREQUENCY

_LM_RCVR_HANG_C  :  examine system load when check receiver health
HECK_SYSTEM_LOA
D

_LM_RCVR_HANG_K  :  to kill receiver hang
ILL

_LM_RCVR_HANG_S  :  systemstate dump level upon receiver hang
YSTEMSTATE_DUMP
_LEVEL

_LM_RESEND_OPEN  :  timeout in secs before resubmitting the open-convert
_CONVERT_TIMEOU
T

_LM_RESS         :  number of resources configured for cluster database
_LM_RES_HASH_BU  :  number of resource hash buckets
CKET

_LM_RES_PART     :  number of resource partition configured for gcs
_LM_RES_TM_HASH  :  number of extra TM resource hash buckets
_BUCKET

_LM_RM_SLAVES    :  if non zero, it enables remastering slaves
_LM_SENDPROXY_R  :  GES percentage of send proxy reserve of send tickets
ESERVE

_LM_SEND_MODE    :  GES send mode
_LM_SEND_QUEUE_  :  GES send queue message batching
BATCHING

_LM_SEND_QUEUE_  :  GES send queue maximum length
LENGTH

_LM_SHARE_LOCK_  :  if TRUE enables share lock optimization
OPT

_LM_SINGLE_INST  :  enable single instance affinity lock optimization
_AFFINITY_LOCK

_LM_SPARE_THREA  :  number of spare threads to be created by the GPnP
DS                  master

_LM_SPARE_UNDO   :  number of spare undo tablespaces to be created by GPnP
master

_LM_SQ_BATCH_FA  :  GES send queue minimum batching factor
CTOR

_LM_SQ_BATCH_TY  :  GES send queue batching mechanism
PE

_LM_SQ_BATCH_WA  :  GES send queue batching waittime in tick
ITTICK

_LM_SYNC_TIMEOU  :  Synchronization timeout for DLM reconfiguration steps
T

_LM_TICKETS      :  GES messaging tickets
_LM_TICKET_ACTI  :  Flow control ticket active sendback threshold
VE_SENDBACK

_LM_TX_DELTA     :  TX lock localization delta
_LM_USE_GCR      :  use GCR module if TRUE
_LM_USE_NEW_DEF  :  use new defered msg queue timeout action
MSGTMO_ACTION

_LM_USE_TX_TSN   :  use undo tsn affinity master as TX enqueue master
_LM_VALIDATE_PB  :  GES process batch validation
ATCH

_LM_WAIT_PENDIN  :  GES wait on pending send queue
G_SEND_QUEUE

_LM_WATCHPOINT_  :  GES number of watchpoints
MAXIMUM

_LM_WATCHPOINT_  :  GES maximum time in seconds to keep watchpoint
TIMEOUT

_LM_XIDS         :  number of transaction IDs configured for cluster
database

_LOAD_WITHOUT_C  :  Load PL/SQL or Database objects without compilation
OMPILE

_LOCAL_ARC_ASSE  :  Assert whenever local ORL arch waits for space
RT_ON_WAIT

_LOCAL_COMMUNIC  :  enable local communication costing when TRUE
ATION_COSTING_E
NABLED

_LOCAL_COMMUNIC  :  set the ratio between global and local communication
ATION_RATIO         (0..100)

_LOCAL_HANG_ANA  :  the interval at which local hang analysis is run
LYSIS_INTERVAL_
SECS

_LOCK_REF_CONST  :  number of nowait attempts to lock referential
RAINT_COUNT         constraint

_LOCK_SGA_AREAS  :  Lock specified areas of the SGA in physical memory
_LOGOUT_STORM_R  :  number of processes that can logout in a second
ATE

_LOGOUT_STORM_R  :  maximum retry count for logouts
ETRYCNT

_LOGOUT_STORM_T  :  timeout in centi-seconds for time to wait between
IMEOUT              retries

_LOG_ARCHIVE_AV  :  log archive avoid memcpy
OID_MEMCPY

_LOG_ARCHIVE_BU  :  Number of buffers to allocate for archiving
FFERS

_LOG_ARCHIVE_CA  :  archival callout
LLOUT

_LOG_ARCHIVE_NE  :  Log archive network redo buffer size used by ARCH
TWORK_REDO_SIZE

_LOG_ARCHIVE_PR  :  log archive protection auto demotion
OT_AUTO_DEMOTE

_LOG_ARCHIVE_ST  :  log archive security strong auth
RONG_AUTH

_LOG_ARCHIVE_TR  :  log archive trace pids parameter
ACE_PIDS

_LOG_BLOCKS_DUR  :  log block images when changed during backup
ING_BACKUP

_LOG_BUFFERS_CO  :  corrupt redo buffers before write
RRUPT

_LOG_BUFFERS_DE  :  debug redo buffers (slows things down)
BUG

_LOG_BUFFER_COA  :  Coalescing log buffers for log writes
LESCE

_LOG_CHECKPOINT  :  # redo blocks to verify after checkpoint
_RECOVERY_CHECK

_LOG_COMMITTIME  :  Log commit-time block cleanout
_BLOCK_CLEANOUT

_LOG_DELETION_P  :  archivelog deletion policy for mandatory/all
OLICY               destination

_LOG_EVENT_QUEU  :  number of the log writer event queues
ES

_LOG_FILE_SYNC_  :  Log file sync timeout (centiseconds)
TIMEOUT

_LOG_MAX_OPTIMI  :  maximum number of threads to which log scan
ZE_THREADS          optimization is applied

_LOG_PARALLELIS  :  Enable dynamic strands
M_DYNAMIC

_LOG_PARALLELIS  :  Maximum number of log buffer strands
M_MAX

_LOG_PRIVATE_MU  :  Private strand multiplier for log space preallocation
L

_LOG_PRIVATE_PA  :  Active sessions multiplier to deduce number of private
RALLELISM_MUL       strands

_LOG_READ_BUFFE  :  Number of log read buffers for media recovery
RS

_LOG_READ_BUFFE  :  buffer size for reading log files
R_SIZE

_LOG_SIMULTANEO  :  number of simultaneous copies into redo buffer(# of
US_COPIES           copy latches)

_LOG_SPACE_ERRO  :  should we report space errors to alert log
RS

_LOG_SWITCH_TIM  :  Maximum number of seconds redos in the current log
EOUT                could span

_LOG_UNDO_DF_IN  :  generate marker to log file# that belong to undo
FO                  tablespace

_LOG_WRITER_WOR  :  LGWR worker DLM health-monitoring heartbeat update
KER_DLM_HEARBEA     frequency (ms)
T_UPDATE_FREQ

_LOG_WRITE_INFO  :  Size of log write info array
_SIZE

_LONGOPS_ENABLE  :  longops stats enabled
D

_LONG_BCAST_ACK  :  threshold for long bcast ack warning messages in ms
_WARNING_THRESH
OLD

_LONG_LOG_WRITE  :  threshold for long log write warning messages in ms
_WARNING_THRESH
OLD

_LOWRES_DRIFT_A  :  allowed lowres timer drift for VKTM
LLOWED_SEC

_LOW_SERVER_THR  :  low server thresholds
ESHOLD

_LTC_TRACE       :  tracing level for load table conventional
_LTHREAD_CLEANU  :  interval for cleaning lightweight threads in secs
P_INTV_SECS

_LTHREAD_CLNUP_  :  timeout after hard killing operation for lthread to
HK_WAIT_SECS        exit

_LTHREAD_CLNUP_  :  wait timeout for PMON between soft kill and hard kill
PMON_SOFTKILL_W     of lthreads
AIT_SECS

_LTHREAD_CLNUP_  :  timeout for spawner between soft kill and hard kill of
SPAWNER_SK_WAIT     lthreads
_SECS

_LTHREAD_DEBUG   :  Enable Debugging mode for lightweight threads
_LTHREAD_ENABLE  :  Enable lightweight threads
D

_LTHREAD_MAX_SP  :  maximum time interval a spawner will wait for a lthread
AWN_TIME_CSECS      to get ready

_LTHREAD_SPAWN_  :  time interval for a spawner to check for spawnee to get
CHECK_INTV_MS       ready

_LTHREAD_STEP_D  :  Enable Step wise Debugging mode for lightweight threads
EBUGGING

_MAIN_DEAD_PROC  :  PMON main dead process scan interval (in seconds)
ESS_SCAN_INTERV
AL

_MASTER_DIRECT_  :  direct sends for messages from master (DFS)
SENDS

_MAV_REFRESH_CO  :  refresh materialized views using consistent read
NSISTENT_READ       snapshot

_MAV_REFRESH_DO  :  materialized view MAV refreshes avoid double counting
UBLE_COUNT_PREV
ENTED

_MAV_REFRESH_OP  :  optimizations during refresh of materialized views
T

_MAV_REFRESH_UN  :  # tables for union all expansion during materialized
IONALL_TABLES       view refresh

_MAX_AQ_PERSIST  :  max aq persistent queue memory
ENT_QUEUE_MEMOR
Y

_MAX_ASYNC_WAIT  :  Switchover wait time for async LNS to catch up in
_FOR_CATCH_UP       seconds

_MAX_CLIENTS_PE  :  maximum number of clients per emon
R_EMON

_MAX_CR_ROLLBAC  :  Maximum number of CR  rollbacks per block (LMS)
KS

_MAX_DATA_TRANS  :  Maximum size of data transfer cache
FER_CACHE_SIZE

_MAX_DEFER_GRAN  :  Maximum deferred granules transferred by MMAN atonce
_XFER_ATONCE

_MAX_EXPONENTIA  :  max sleep during exponential backoff
L_SLEEP

_MAX_FILESTAT_T  :  maximum number of file stat tries
RIES

_MAX_FSU_SEGMEN  :  Maximum segments to track for fast space usage
TS

_MAX_FSU_STALE_  :  Allowed space usage staleness in seconds
TIME

_MAX_INCIDENT_F  :  Maximum size (in KB, MB, GB, Blocks) of incident dump
ILE_SIZE            file

_MAX_IO_SIZE     :  Maximum I/O size in bytes for sequential file accesses
_MAX_KCNIBR_RAN  :  Max number of nonlogged data block ranges
GES

_MAX_LARGEPAGE_  :  Maximum number of seconds to spend on largepage
ALLOC_TIME_SECS     allocation

_MAX_LARGE_IO    :  IORM:max number of large I/O’s to issue
_MAX_LNS_SHUTDO  :  Maximum time spent by LNS to archive last log during
WN_ARCHIVAL_TIM     shutdown
E

_MAX_LOG_WRITE_  :  Maximum I/O parallelism within a log write (auto=0)
IO_PARALLELISM

_MAX_LOG_WRITE_  :  Maximum parallelism within a log write (auto=0)
PARALLELISM

_MAX_OUTSTANDIN  :  Maximum number of outstanding redo log writes
G_LOG_WRITES

_MAX_PENDING_SC  :  maximum number of pending SCN broadcasts
N_BCASTS

_MAX_PROTOCOL_S  :  Max occurrence protocols supported in a process
UPPORT

_MAX_QUEUED_REP  :  Maximum number of report requests that can be queued in
ORT_REQUESTS        a list

_MAX_REASONABLE  :  Max reasonable SCN rate
_SCN_RATE

_MAX_REPORT_FLU  :  Max no of report requests that can be flushed per cycle
SHES_PERCYCLE

_MAX_RWGS_GROUP  :  maximum no of groupings on materialized views
INGS

_MAX_SERVICES    :  maximum number of database services
_MAX_SHRINK_OBJ  :  number of segments for which shrink stats will be
_STATS              maintained

_MAX_SLEEP_HOLD  :  max time to sleep while holding a latch
ING_LATCH

_MAX_SMALL_IO    :  IORM:max number of small I/O’s to issue
_MAX_SPACEBG_MS  :  maximum space management interrupt message throttling
GS_PERCENTAGE

_MAX_SPACEBG_SL  :  maximum space management background slaves
AVES

_MAX_SPACEBG_TA  :  maximum space management background tasks
SKS

_MAX_STRING_SIZ  :  controls error checking for the max_string_size
E_BYPASS            parameter

_MAX_SYS_NEXT_E  :  Dictionary managed SYSTEM tablespace maximum next
XTENT               extent size in MB (allowed range [16-4095], 0 if
unlimited)

_MEDIA_RECOVERY  :  media recovery block read batch
_READ_BATCH

_MEMORY_BROKER_  :  memory broker num stat entries
LOG_STAT_ENTRIE
S

_MEMORY_BROKER_  :  Marginal Utility threshold pct for bc
MARGINAL_UTILIT
Y_BC

_MEMORY_BROKER_  :  Marginal Utility threshold pct for sp
MARGINAL_UTILIT
Y_SP

_MEMORY_BROKER_  :  memory broker allow policy to shrink shared pool
SHRINK_HEAPS

_MEMORY_BROKER_  :  memory broker allow policy to shrink java pool
SHRINK_JAVA_HEA
PS

_MEMORY_BROKER_  :  memory broker allow policy to shrink streams pool
SHRINK_STREAMS_
POOL

_MEMORY_BROKER_  :  memory broker policy to timeout shrink shared/java pool
SHRINK_TIMEOUT

_MEMORY_BROKER_  :  memory broker statistics gathering interval for auto
STAT_INTERVAL       sga

_MEMORY_CHECKIN  :  check inuse time interval
USE_TIMEINTV

_MEMORY_IMM_MOD  :  Allow immediate mode without sga/memory target
E_WITHOUT_AUTOS
GA

_MEMORY_INITIAL  :  Initial default sga target percentage with memory
_SGA_SPLIT_PERC     target

_MEMORY_MANAGEM  :  trace memory management activity
ENT_TRACING

_MEMORY_MAX_TGT  :  counts the times checker increments memory target
_INC_CNT

_MEMORY_MGMT_FA  :  always fail immediate mode request
IL_IMMREQ

_MEMORY_MGMT_IM  :  time in seconds to time out immediate mode request
MREQ_TIMEOUT

_MEMORY_NOCANCE  :  do not cancel deferred sga reqs with auto-memory
L_DEFSGAREQ

_MEMORY_SANITY_  :  partial granule sanity check
CHECK

_MEM_ANNOTATION  :  private memory annotation collection level
_PR_LEV

_MEM_ANNOTATION  :  memory annotation pre-allocation scaling
_SCALE

_MEM_ANNOTATION  :  shared memory annotation collection level
_SH_LEV

_MEM_ANNOTATION  :  memory annotation in-memory store
_STORE

_MEM_STD_EXTENT  :  standard extent size for fixed-size-extent heaps
_SIZE

_MESSAGES        :  message queue resources – dependent on # processes & #
buffers

_MGD_RCV_HANDLE  :  Managed recovery handle orphan datafile situation
_ORPHAN_DATAFIL
ES

_MIDTIER_AFFINI  :  cluster wait precentage threshold to enter affinity
TY_CLUSWAIT_PRC
_THRESHOLD

_MIDTIER_AFFINI  :  goodness gradient threshold to dissolve affinity
TY_GOODNESS_THR
ESHOLD

_MINFREE_PLUS    :  max percentage of block space + minfree before we mark
block full

_MINIMAL_STATS_  :  prohibit stats aggregation at compile/partition
AGGREGATION         maintenance time

_MINIMUM_BLOCKS  :  minimum number freeable blocks for shrink to be present
_TO_SHRINK

_MINIMUM_DB_FLA  :  Minimum flashback retention
SHBACK_RETENTIO
N

_MINIMUM_EXTENT  :  minimum number freeable extents for shrink to be
S_TO_SHRINK         present

_MIN_TIME_BETWE  :  minimum time between PSP0 diagnostic used for flow
EN_PSP0_DIAG_SE     control
CS

_MIRROR_REDO_BU  :  Save buffers for debugging redo corruptions
FFERS

_MMV_QUERY_REWR  :  allow rewrites with multiple MVs and/or base tables
ITE_ENABLED

_MODIFY_COLUMN_  :  allow ALTER TABLE MODIFY(column) to violate index key
INDEX_UNUSABLE      length limit

_MODULE_ACTION_  :  Use module and action old length parameter
OLD_LENGTH

_MPMT_ENABLED    :  MPMT mode enabled
_MPMT_ENABLED_B  :  mpmt enabled backgrounds
ACKGROUNDS

_MPMT_FG_ENABLE  :  MPMT mode foreground enabled
D

_MPMT_PROCS_PER  :  max procs per osp
_OSP

_MULTIPLE_INSTA  :  use multiple instances for media recovery
NCE_RECOVERY

_MULTI_INSTANCE  :  force multi instance parallel recovery
_PMR

_MULTI_JOIN_KEY  :  TRUE iff multi-join-key table lookup prefetch is
_TABLE_LOOKUP       enabled

_MULTI_TRANSACT  :  reduce SGA memory use during create of a partitioned
ION_OPTIMIZATIO     table
N_ENABLED

_MUTEX_SPIN_COU  :  Mutex spin count
NT

_MUTEX_WAIT_SCH  :  Mutex wait scheme
EME

_MUTEX_WAIT_TIM  :  Mutex wait time
E

_MV_ADD_LOG_PLA  :  add log placeholder
CEHOLDER

_MV_CLEANUP_ORP  :  cleanup orphaned materialized view metadata
HANED_METADATA

_MV_COMPLETE_RE  :  use conventional INSERTs for MV complete refresh
FRESH_CONVENTIO
NAL

_MV_DEFERRED_NO  :  avoid build deferred MV log age validate
_LOG_AGE_VAL

_MV_EXPRESSION_  :  MV expression extend size
EXTEND_SIZE

_MV_GENERALIZED  :  enable/disable new algorithm for MJV with generalized
_OJ_REFRESH_OPT     outer joins

_MV_REFRESH_ANA  :  what percent to analyze after complete/PCT refresh
_MV_REFRESH_COS  :  refresh decision based on cost or on rules
TING

_MV_REFRESH_DEL  :  delta mv as fractional percentage of size of mv
TA_FRACTION

_MV_REFRESH_ENH  :  enable enhanced detection of DML types from MV log
ANCED_DML_DETEC
TION

_MV_REFRESH_EUT  :  refresh materialized views using EUT(partition)-based
algorithm

_MV_REFRESH_FOR  :  force materialized view refreshes to use parallel query
CE_PARALLEL_QUE
RY

_MV_REFRESH_INS  :  materialized view refresh using insert no append
ERT_NO_APPEND

_MV_REFRESH_NEW  :  materialized view MV refresh new setup disabling
_SETUP_DISABLED

_MV_REFRESH_NO_  :  avoid index rebuild  as part of the MV refresh
IDX_REBUILD

_MV_REFRESH_PKF  :  control MV refresh based on the assumption of PK-FK
K_DATA_UNITS_OP     data units
T

_MV_REFRESH_PKF  :  control MV refresh based on the use of PK-FK
K_RELATIONSHIP_     relationships
OPT

_MV_REFRESH_REB  :  minimum percentage change required in MV to force an
UILD_PERCENTAGE     indexrebuild

_MV_REFRESH_SEL  :  create materialized views with selections and fast
ECTIONS             refresh

_MV_REFRESH_UPD  :  materialized view refresh using update analysis
ATE_ANALYSIS

_MV_REFRESH_USE  :  use hash_sj hint in queries
_HASH_SJ

_MV_REFRESH_USE  :  use no_merge hint in queries
_NO_MERGE

_MV_REFRESH_USE  :  pass cardinality hints to refresh queries
_STATS

_MV_REFSCHED_TI  :  proportionality constant for dop vs. time in MV refresh
MEINCR

_MV_ROLLING_INV  :  create/alter mv uses rolling cursor invalidation
instead of immediate

_MWIN_SCHEDULE   :  Enable/disable Maintenance Window Schedules
_NAMESERVICE_CO  :  NameService Consistency check switch
NSISTENCY_CHECK

_NCHAR_IMP_CNV   :  NLS allow Implicit Conversion between CHAR and NCHAR
_NCHAR_IMP_CONV  :  should implicit conversion bewteen clob and nclob be
allowed

_NCMB_READAHEAD  :  enable multi-block readahead for an index scan
_ENABLED

_NCMB_READAHEAD  :  turn on multi-block readahead tracing
_TRACING

_NCOMP_SHARED_O  :  native compilation shared objects dir
BJECTS_DIR

_NESTED_LOOP_FU  :  nested loop fudge
DGE

_NESTED_MV_FAST  :  nested MV refresh fast on commit allowed
_ONCOMMIT_ENABL
ED

_NET_TIMEOUT_LA  :  NET_TIMEOUT latency
TENCY

_NEWSORT_ENABLE  :  controls whether new sorts can be used as system sort
D

_NEWSORT_ORDERE  :  controls when new sort avoids sorting ordered input
D_PCT

_NEWSORT_TYPE    :  specifies options for the new sort algorithm
_NEW_INITIAL_JO  :  enable initial join orders based on new ordering
IN_ORDERS           heuristics

_NEW_SORT_COST_  :  enables the use of new cost estimate for sort
ESTIMATE

_NINETEENTH_SPA  :  nineteenth spare parameter – string
RE_PARAMETER

_NINTH_SPARE_PA  :  ninth spare parameter – integer
RAMETER

_NLJ_BATCHING_A  :  FAE flag type set after restoring to IO batching buffer
E_FLAG

_NLJ_BATCHING_E  :  enable batching of the RHS IO in NLJ
NABLED

_NLJ_BATCHING_M  :  enable exceptions for buffer cache misses
ISSES_ENABLED

_NLS_PARAMETER_  :  enables or disables updates to v$parameter whenever an
SYNC_ENABLED        alter session statement modifies various nls parameters

_NOLOGGING_KCNB  :  Number of nologging buffer hash buckets
UF_HASH_BUCKETS

_NOLOGGING_KCNB  :  Number of nologging buffer hash latches
UF_HASH_LATCHES

_NOLOGGING_LOAD  :  Nologging standby: direct load buffer size
_SLOTSZ

_NOLOGGING_SDCL  :  Nologging standby append sdcl wait time
_APPEND_WAIT

_NOLOGGING_SEND  :  Nologging standby: outstanding send buffer ratio
BUF_RATIO

_NOLOGGING_TXN_  :  Nologging standby transaction commit wait time
CMT_WAIT

_NONCDB_TO_PDB   :  converting a non-cdb to a pdb
_NOSEG_FOR_UNUS  :  no segments for unusable indexes if set to TRUE
ABLE_INDEX_ENAB
LED

_NOTIFY_CRS      :  notify cluster ready services of startup and shutdown
_NO_OBJECTS      :  no object features are used
_NO_OR_EXPANSIO  :  OR expansion during optimization disabled
N

_NO_RECOVERY_TH  :  no recovery through this resetlogs operation
ROUGH_RESETLOGS

_NO_SMALL_FILE   :  Not to apply new extent scheme for small file temp
spaces

_NO_STALE_JOINB  :  No joinbacks if mv is stale
ACK_REWRITE

_NS_MAX_FLUSH_W  :  Flush wait time for NetServer to flush oustanding
T                   writes

_NS_MAX_SEND_DE  :  Data Loss Time Bound for NetServer
LAY

_NUMA_BUFFER_CA  :  Configure NUMA buffer cache stats
CHE_STATS

_NUMA_INSTANCE_  :  Set of nodes that this instance should run on
MAPPING

_NUMA_POOL_SIZE  :  aggregate size in bytes of NUMA pool
_NUMA_SHIFT_ENA  :  Enable NUMA shift
BLED

_NUMA_SHIFT_VAL  :  user defined value for numa nodes shift
UE

_NUMA_TRACE_LEV  :  numa trace event
EL

_NUMBER_CACHED_  :  maximum number of cached attributes per instance
ATTRIBUTES

_NUMBER_CACHED_  :  maximum number of cached group memberships
GROUP_MEMBERSHI
PS

_NUMBER_GROUP_M  :  maximum number of group memberships per cache line
EMBERSHIPS_PER_
CACHE_LINE

_NUM_LONGOP_CHI  :  number of child latches for long op array
LD_LATCHES

_OBJECT_NUMBER_  :  Object number cache size
CACHE_SIZE

_OBJECT_REUSE_B  :  if 1 or higher, handle object reuse
AST

_OBJECT_STATIST  :  enable the object level statistics collection
ICS

_OBJECT_STATS_M  :  Maximum number of entries to be tracked per stat
AX_ENTRIES

_OBJ_CKPT_TRACI  :  Enable object checkpoint tracing
NG

_ODCI_AGGREGATE  :  trade speed for space in user-defined aggregation
_SAVE_SPACE

_OFFLINE_ROLLBA  :  offline undo segment list
CK_SEGMENTS

_OGMS_HOME       :  GMS home directory
_OLAPI_HISTORY_  :  enable olapi history retention
RETENTION

_OLAPI_IFACE_OB  :  enable olapi interface object history collection
JECT_HISTORY

_OLAPI_IFACE_OB  :  enable olapi interface object history retention
JECT_HISTORY_RE
TENTION

_OLAPI_IFACE_OP  :  enable olapi interface operation history retention
ERATION_HISTORY
_RETENTION

_OLAPI_INTERFAC  :  enable olapi interface operation history collection
E_OPERATION_HIS
TORY

_OLAPI_MEMORY_O  :  enable olapi memory alloc/free history collection
PERATION_HISTOR
Y

_OLAPI_MEMORY_O  :  enable olapi memory alloc/free history collection
PERATION_HISTOR     pausing
Y_PAUSE_AT_SEQN
O

_OLAPI_MEMORY_O  :  enable olapi memory operation history retention
PERATION_HISTOR
Y_RETENTION

_OLAPI_SESSION_  :  enable olapi session history collection
HISTORY

_OLAPI_SESSION_  :  enable olapi session history retention
HISTORY_RETENTI
ON

_OLAP_ADV_COMP_  :  do additional predicate stats analysis for AW rowsource
STATS_CC_PRECOM
P

_OLAP_ADV_COMP_  :  do additional predicate stats analysis for AW rowsource
STATS_MAX_ROWS

_OLAP_AGGREGATE  :  OLAP Aggregate max buffer size
_BUFFER_SIZE

_OLAP_AGGREGATE  :  OLAP Aggregate debug flags
_FLAGS

_OLAP_AGGREGATE  :  OLAP Aggregate function cache enabler
_FUNCTION_CACHE
_ENABLED

_OLAP_AGGREGATE  :  OLAP Aggregate max thread tuples creation
_MAX_THREAD_TUP
LES

_OLAP_AGGREGATE  :  OLAP Aggregate min buffer size
_MIN_BUFFER_SIZ
E

_OLAP_AGGREGATE  :  OLAP Aggregate minimum cardinality of dimensions for
_MIN_THREAD_STA     thread
TUS

_OLAP_AGGREGATE  :  OLAP Aggregate Multi-path Hierarhies enabled
_MULTIPATH_HIER

_OLAP_AGGREGATE  :  OLAP Aggregate status array usage threshold
_STATLEN_THRESH

_OLAP_AGGREGATE  :  OLAP Aggregate max worklists generated at once
_WORKLIST_MAX

_OLAP_AGGREGATE  :  OLAP Aggregate max work parents
_WORK_PER_THREA
D

_OLAP_ALLOCATE_  :  OLAP Allocate Errorlog Format
ERRORLOG_FORMAT

_OLAP_ALLOCATE_  :  OLAP Allocate Errorlog Header format
ERRORLOG_HEADER

_OLAP_ANALYZE_M  :  OLAP DML ANALYZE command max cells to analyze
AX

_OLAP_CONTINUOU  :  OLAP logging definition
S_TRACE_FILE

_OLAP_DBGOUTFIL  :  OLAP DbgOutfile copy output to event log (tracefile)
E_ECHO_TO_EVENT
LOG

_OLAP_DIMENSION  :  OLAP Dimension In-Core Hash Table Force
_COREHASH_FORCE

_OLAP_DIMENSION  :  OLAP Dimension In-Core Hash Table Large Threshold
_COREHASH_LARGE

_OLAP_DIMENSION  :  OLAP Dimension In-Core Hash Table Pressure Threshold
_COREHASH_PRESS
URE

_OLAP_DIMENSION  :  OLAP Dimension In-Core Hash Table Maximum Memory Use
_COREHASH_SIZE

_OLAP_EIF_EXPOR  :  OLAP EIF Export BLOB size
T_LOB_SIZE

_OLAP_LMGEN_DIM  :  Limitmap generator dimension column size
_SIZE

_OLAP_LMGEN_MEA  :  Limitmap generator measure column size
S_SIZE

_OLAP_OBJECT_HA  :  OLAP Object Hash Table Class
SH_CLASS

_OLAP_PAGE_POOL  :  OLAP Page Pool Expand Rate
_EXPAND_RATE

_OLAP_PAGE_POOL  :  OLAP Page Pool High Watermark
_HI

_OLAP_PAGE_POOL  :  OLAP Page Pool Hit Target
_HIT_TARGET

_OLAP_PAGE_POOL  :  OLAP Page Pool Low Watermark
_LOW

_OLAP_PAGE_POOL  :  OLAP Page Pool Pressure Threshold
_PRESSURE

_OLAP_PAGE_POOL  :  OLAP Page Pool Shrink Rate
_SHRINK_RATE

_OLAP_PARALLEL_  :  OLAP parallel update server count
UPDATE_SERVER_N
UM

_OLAP_PARALLEL_  :  OLAP parallel update threshold for number of small
UPDATE_SMALL_TH     pagespaces
RESHOLD

_OLAP_PARALLEL_  :  OLAP parallel update threshold in pages
UPDATE_THRESHOL
D

_OLAP_ROW_LOAD_  :  OLAP Row Load Time Precision
TIME_PRECISION

_OLAP_SESSCACHE  :  OLAP Session Cache knob
_ENABLED

_OLAP_SORT_BUFF  :  OLAP Sort Buffer Size Percentage
ER_PCT

_OLAP_SORT_BUFF  :  OLAP Sort Buffer Size
ER_SIZE

_OLAP_STATBOOL_  :  OLAP Status Boolean max incore bits
COREBITS

_OLAP_STATBOOL_  :  OLAP Status Boolean CBM threshold
THRESHOLD

_OLAP_TABLE_FUN  :  Specify TRUE to output OLAP table function timed
CTION_STATISTIC     statistics trace
S

_OLAP_WRAP_ERRO  :  Wrap error messages to OLAP outfile
RS

_OLD_CONNECT_BY  :  enable/disable old connect by
_ENABLED

_OLD_EXTENT_SCH  :  Revert to old extent allocation
EME

_OLS_CLEANUP_TA  :  Clean up unnecessary entries in OLS sessinfo table
SK

_OLTP_COMPRESSI  :  oltp compression enabled
ON

_OLTP_COMPRESSI  :  oltp compression gain
ON_GAIN

_OLTP_COMP_DBG_  :  oltp compression scan debug
SCAN

_OLTP_SPILL      :  spill rows for oltp compression if loader pga limit is
exceeded

_OMF             :  enable/disable OMF
_OMNI_ENQUEUE_E  :  Enable Omni Enqueue feature (0 = disable, 1 = enable on
NABLE               ASM (default), 2 = enable)

_ONESIDE_COLSTA  :  sanity check on default selectivity for like/range
T_FOR_EQUIJOINS     predicate

_ONLINE_CTAS_DI  :  controls dumping diagnostic information for online ctas
AG

_ONLINE_PATCH_D  :  disable check for function on stack for online patches
ISABLE_STACK_CH
ECK

_OPS_PER_SEMOP   :  the exact number of operations per semop system call
_OPTIMIZER_ADAP  :  optimizer adaptive cursor sharing
TIVE_CURSOR_SHA
RING

_OPTIMIZER_ADAP  :  enable adaptive plans
TIVE_PLANS

_OPTIMIZER_ADAP  :  internal controls for adaptive plans
TIVE_PLAN_CONTR
OL

_OPTIMIZER_ADJU  :  adjust selectivity for null values
ST_FOR_NULLS

_OPTIMIZER_ADS_  :  maximum number of tables in a join under ADS
MAX_TABLE_COUNT

_OPTIMIZER_ADS_  :  maximum time limit (seconds) under ADS
TIME_LIMIT

_OPTIMIZER_ADS_  :  use result cache for ADS queries
USE_RESULT_CACH
E

_OPTIMIZER_ANSI  :  optimization of left/full ansi-joins and lateral views
_JOIN_LATERAL_E
NHANCE

_OPTIMIZER_ANSI  :  re-architecture of ANSI left, right, and full outer
_REARCHITECTURE     joins

_OPTIMIZER_AUTO  :  enable/disable auto stats collection job
STATS_JOB

_OPTIMIZER_AW_J  :  Enables AW Join Push optimization
OIN_PUSH_ENABLE
D

_OPTIMIZER_AW_S  :  Enables statistcs on AW olap_table table function
TATS_ENABLED

_OPTIMIZER_BATC  :  enable table access by ROWID IO batching
H_TABLE_ACCESS_
BY_ROWID

_OPTIMIZER_BETT  :  enable improved costing of index access using
ER_INLIST_COSTI     in-list(s)
NG

_OPTIMIZER_BLOC  :  standard block size used by optimizer
K_SIZE

_OPTIMIZER_CACH  :  cost with cache statistics
E_STATS

_OPTIMIZER_CART  :  optimizer cartesian join enabled
ESIAN_ENABLED

_OPTIMIZER_CBQT  :  cost factor for cost-based query transformation
_FACTOR

_OPTIMIZER_CBQT  :  disable cost based transformation query size
_NO_SIZE_RESTRI     restriction
CTION

_OPTIMIZER_CEIL  :  CEIL cost in CBO
_COST

_OPTIMIZER_CLUS  :  enable/disable the cluster by rowid feature
TER_BY_ROWID

_OPTIMIZER_CLUS  :  internal control for cluster by rowid feature mode
TER_BY_ROWID_CO
NTROL

_OPTIMIZER_COAL  :  consider coalescing of subqueries optimization
ESCE_SUBQUERIES

_OPTIMIZER_COMP  :  enable selectivity estimation for builtin functions
LEX_PRED_SELECT
IVITY

_OPTIMIZER_COMP  :  force index stats collection on index creation/rebuild
UTE_INDEX_STATS

_OPTIMIZER_CONN  :  use cost-based transformation for whr clause in connect
ECT_BY_CB_WHR_O     by
NLY

_OPTIMIZER_CONN  :  combine no filtering connect by and start with
ECT_BY_COMBINE_
SW

_OPTIMIZER_CONN  :  use cost-based transformation for connect by
ECT_BY_COST_BAS
ED

_OPTIMIZER_CONN  :  allow connect by to eliminate duplicates from input
ECT_BY_ELIM_DUP
S

_OPTIMIZER_CORR  :  force correct computation of subquery selectivity
ECT_SQ_SELECTIV
ITY

_OPTIMIZER_COST  :  enables cost-based query transformation
_BASED_TRANSFOR
MATION

_OPTIMIZER_COST  :  enables  costing of filter predicates in IO cost model
_FILTER_PRED

_OPTIMIZER_COST  :  add cost of generating result set when #rows per key >
_HJSMJ_MULTIMAT     1
CH

_OPTIMIZER_COST  :  optimizer cost model
_MODEL

_OPTIMIZER_CUBE  :  enable cube join
_JOIN_ENABLED

_OPTIMIZER_DEGR  :  force the optimizer to use the same degree of
EE                  parallelism

_OPTIMIZER_DIM_  :  use join selectivity in choosing star transformation
SUBQ_JOIN_SEL       dimensions

_OPTIMIZER_DISA  :  disable star transformation sanity checks
BLE_STRANS_SANI
TY_CHECKS

_OPTIMIZER_DIST  :  Transforms Distinct Aggregates to non-distinct
INCT_AGG_TRANSF     aggregates
ORM

_OPTIMIZER_DIST  :  Eliminates redundant SELECT DISTNCT’s
INCT_ELIMINATIO
N

_OPTIMIZER_DIST  :  consider distinct placement optimization
INCT_PLACEMENT

_OPTIMIZER_DSDI  :  controls optimizer usage of dynamic sampling directives
R_USAGE_CONTROL

_OPTIMIZER_DYN_  :  number of blocks for optimizer dynamic sampling
SMP_BLKS

_OPTIMIZER_ELIM  :  optimizer filtering join elimination enabled
INATE_FILTERING
_JOIN

_OPTIMIZER_ENAB  :  use improved density computation for selectivity
LE_DENSITY_IMPR     estimation
OVEMENTS

_OPTIMIZER_ENAB  :  use extended statistics for selectivity estimation
LE_EXTENDED_STA
TS

_OPTIMIZER_ENAB  :  consider table lookup by nl transformation
LE_TABLE_LOOKUP
_BY_NL

_OPTIMIZER_ENHA  :  push filters before trying cost-based query
NCED_FILTER_PUS     transformation
H

_OPTIMIZER_EXTE  :  optimizer extended cursor sharing
NDED_CURSOR_SHA
RING

_OPTIMIZER_EXTE  :  optimizer extended cursor sharing for relational
NDED_CURSOR_SHA     operators
RING_REL

_OPTIMIZER_EXTE  :  controls the optimizer usage of extended stats
NDED_STATS_USAG
E_CONTROL

_OPTIMIZER_EXTE  :  join pred pushdown on group-by, distinct,
ND_JPPD_VIEW_TY     semi-/anti-joined view
PES

_OPTIMIZER_FALS  :  optimizer false predicate pull up transformation
E_FILTER_PRED_P
ULLUP

_OPTIMIZER_FAST  :  use fast algorithm to traverse predicates for physical
_ACCESS_PRED_AN     optimizer
ALYSIS

_OPTIMIZER_FAST  :  use fast algorithm to generate transitive predicates
_PRED_TRANSITIV
ITY

_OPTIMIZER_FEED  :  controls the optimizer feedback framework
BACK_CONTROL

_OPTIMIZER_FILT  :  use cost-based flter predicate pull up transformation
ER_PRED_PULLUP

_OPTIMIZER_FILT  :  enable/disable filter predicate pushdown
ER_PUSHDOWN

_OPTIMIZER_FKR_  :  Optimizer index bias over FTS/IFFS under first K rows
INDEX_COST_BIAS     mode

_OPTIMIZER_FORC  :  force CBQT transformation regardless of cost
E_CBQT

_OPTIMIZER_FREE  :  free transformation subheap after each transformation
_TRANSFORMATION
_HEAP

_OPTIMIZER_FULL  :  enable/disable full outer to left outer join conversion
_OUTER_JOIN_TO_
OUTER

_OPTIMIZER_GATH  :  optimizer gather feedback
ER_FEEDBACK

_OPTIMIZER_GATH  :  enable/disable online statistics gathering
ER_STATS_ON_LOA
D

_OPTIMIZER_GENE  :  optimizer generate transitive predicates
RATE_TRANSITIVE
_PRED

_OPTIMIZER_GROU  :  consider group-by placement optimization
P_BY_PLACEMENT

_OPTIMIZER_HYBR  :  enable hybrid full partition-wise join when TRUE
ID_FPWJ_ENABLED

_OPTIMIZER_IGNO  :  enables the embedded hints to be ignored
RE_HINTS

_OPTIMIZER_IMPR  :  improve table and partial overlap join selectivity
OVE_SELECTIVITY     computation

_OPTIMIZER_INST  :  force the optimizer to use the specified number of
ANCE_COUNT          instances

_OPTIMIZER_INTE  :  interleave join predicate pushdown during CBQT
RLEAVE_JPPD

_OPTIMIZER_INVA  :  time window for invalidation of cursors of analyzed
LIDATION_PERIOD     objects

_OPTIMIZER_JOIN  :  optimizer join elimination enabled
_ELIMINATION_EN
ABLED

_OPTIMIZER_JOIN  :  use join factorization transformation
_FACTORIZATION

_OPTIMIZER_JOIN  :  controls the optimizer join order search algorithm
_ORDER_CONTROL

_OPTIMIZER_JOIN  :  enable/disable sanity check for multi-column join
_SEL_SANITY_CHE     selectivity
CK

_OPTIMIZER_MAX_  :  optimizer maximum join permutations per query block
PERMUTATIONS

_OPTIMIZER_MIN_  :  set minimum cached blocks
CACHE_BLOCKS

_OPTIMIZER_MJC_  :  enable merge join cartesian
ENABLED

_OPTIMIZER_MODE  :  force setting of optimizer mode for user recursive SQL
_FORCE              also

_OPTIMIZER_MULT  :  generate and run plans using several compilation
IPLE_CENV           environments

_OPTIMIZER_MULT  :  control what to report in trace file when run in
IPLE_CENV_REPOR     multi-plan mode
T

_OPTIMIZER_MULT  :  control the types of statements that are run in
IPLE_CENV_STMT      multi-plan mode

_OPTIMIZER_MULT  :  consider join-predicate pushdown that requires
I_LEVEL_PUSH_PR     multi-level pushdown to base table
ED

_OPTIMIZER_MULT  :  allows multiple tables on the left of outerjoin
I_TABLE_OUTERJO
IN

_OPTIMIZER_NATI  :  execute full outer join using native implementaion
VE_FULL_OUTER_J
OIN

_OPTIMIZER_NEST  :  number of groups above which we use nested rollup exec
ED_ROLLUP_FOR_G     for gset
SET

_OPTIMIZER_NEW_  :  compute join cardinality using non-rounded input values
JOIN_CARD_COMPU
TATION

_OPTIMIZER_NULL  :  enables null-accepting semijoin
_ACCEPTING_SEMI
JOIN

_OPTIMIZER_NULL  :  null-aware antijoin parameter
_AWARE_ANTIJOIN

_OPTIMIZER_ORDE  :  Eliminates order bys from views before query
R_BY_ELIMINATIO     transformation
N_ENABLED

_OPTIMIZER_OR_E  :  control or expansion approach used
XPANSION

_OPTIMIZER_OR_E  :  Use subheap for optimizer or-expansion
XPANSION_SUBHEA
P

_OPTIMIZER_OUTE  :  enable/disable outer to inner join conversion
R_JOIN_TO_INNER

_OPTIMIZER_OUTE  :  Enable transformation of outer-join to anti-join if
R_TO_ANTI_ENABL     possible
ED

_OPTIMIZER_PART  :  partial join evaluation parameter
IAL_JOIN_EVAL

_OPTIMIZER_PERC  :  optimizer percent parallel
ENT_PARALLEL

_OPTIMIZER_PERF  :  controls the performance feedback
ORMANCE_FEEDBAC
K

_OPTIMIZER_PROC  :  control the level of processing rates
_RATE_LEVEL

_OPTIMIZER_PROC  :  control the source of processing rates
_RATE_SOURCE

_OPTIMIZER_PURG  :  number of rows to be deleted at each iteration of the
E_STATS_ITERATI     stats                   purging process
ON_ROW_COUNT

_OPTIMIZER_PUSH  :  push down distinct from query block to table
_DOWN_DISTINCT

_OPTIMIZER_PUSH  :  use cost-based query transformation for push pred
_PRED_COST_BASE     optimization
D

_OPTIMIZER_RAND  :  optimizer seed value for random plans
OM_PLAN

_OPTIMIZER_REUS  :  reuse cost annotations during cost-based query
E_COST_ANNOTATI     transformation
ONS

_OPTIMIZER_ROWN  :  Default value to use for rownum bind
UM_BIND_DEFAULT

_OPTIMIZER_ROWN  :  enable the use of first K rows due to rownum predicate
UM_PRED_BASED_F
KR

_OPTIMIZER_SAVE  :  enable/disable saving old versions of optimizer stats
_STATS

_OPTIMIZER_SEAR  :  optimizer search limit
CH_LIMIT

_OPTIMIZER_SELF  :  account for self-induced caching
_INDUCED_CACHE_
COST

_OPTIMIZER_SKIP  :  enable/disable index skip scan
_SCAN_ENABLED

_OPTIMIZER_SKIP  :  consider index skip scan for predicates with guessed
_SCAN_GUESS         selectivity

_OPTIMIZER_SORT  :  enable/disable sort-merge join method
MERGE_JOIN_ENAB
LED

_OPTIMIZER_SORT  :  enable/disable sort-merge join using inequality
MERGE_JOIN_INEQ     predicates
UALITY

_OPTIMIZER_SQU_  :  enables unnesting of subquery in a bottom-up manner
BOTTOMUP

_OPTIMIZER_STAR  :  optimizer star plan enabled
PLAN_ENABLED

_OPTIMIZER_STAR  :  optimizer star transformation minimum cost
_TRANS_MIN_COST

_OPTIMIZER_STAR  :  optimizer star transformation minimum ratio
_TRANS_MIN_RATI
O

_OPTIMIZER_STAR  :  enable/disable star transformation in with clause
_TRAN_IN_WITH_C     queries
LAUSE

_OPTIMIZER_STRA  :  allow adaptive pruning of star transformation bitmap
NS_ADAPTIVE_PRU     trees
NING

_OPTIMIZER_SYST  :  system statistics usage
EM_STATS_USAGE

_OPTIMIZER_TABL  :  consider table expansion transformation
E_EXPANSION

_OPTIMIZER_TRAC  :  optimizer trace parameter
E

_OPTIMIZER_TRAN  :  retain equi-join pred upon transitive equality pred
SITIVITY_RETAIN     generation

_OPTIMIZER_TRY_  :  try Star Transformation before Join Predicate Push Down
ST_BEFORE_JPPD

_OPTIMIZER_UNDO  :  undo changes to query optimizer
_CHANGES

_OPTIMIZER_UNDO  :  optimizer undo cost change
_COST_CHANGE

_OPTIMIZER_UNNE  :  enables unnesting of every type of subquery
ST_ALL_SUBQUERI
ES

_OPTIMIZER_UNNE  :  Unnesting of correlated set subqueries (TRUE/FALSE)
ST_CORR_SET_SUB
Q

_OPTIMIZER_UNNE  :  Unnesting of disjunctive subqueries (TRUE/FALSE)
ST_DISJUNCTIVE_
SUBQ

_OPTIMIZER_UNNE  :  enables unnesting of of scalar subquery
ST_SCALAR_SQ

_OPTIMIZER_USE_  :  use rewritten star transformation using cbqt framework
CBQT_STAR_TRANS
FORMATION

_OPTIMIZER_USE_  :  optimizer use feedback
FEEDBACK

_OPTIMIZER_USE_  :  use GTT session private statistics
GTT_SESSION_STA
TS

_OPTIMIZER_USE_  :  enable/disable the usage of histograms by the optimizer
HISTOGRAMS

_OPTIMIZER_USE_  :  Enables physical optimizer subheap
SUBHEAP

_OPTIM_ADJUST_F  :  adjust stats for skews across partitions
OR_PART_SKEWS

_OPTIM_DICT_STA  :  enable/disable dictionary stats gathering at db
TS_AT_DB_CR_UPG     create/upgrade

_OPTIM_ENHANCE_  :  TRUE to enable index [fast] full scan more often
NNULL_DETECTION

_OPTIM_NEW_DEFA  :  improves the way default equijoin selectivity are
ULT_JOIN_SEL        computed

_OPTIM_PEEK_USE  :  enable peeking of user binds
R_BINDS

_ORACLE_SCRIPT   :  Running an Oracle-supplied script
_ORADBG_PATHNAM  :  path of oradbg script
E

_ORADEBUG_CMDS_  :  oradebug commands to execute at instance startup
AT_STARTUP

_ORADEBUG_FORCE  :  force target processes to execute oradebug commands?
_ORDERED_NESTED  :  enable ordered nested loop costing
_LOOP

_ORDERED_SEMIJO  :  enable ordered semi-join subquery
IN

_ORPH_CLN_INTER  :  qmon periodic interval for removed subscriber messages
VAL                 cleanup

_OR_EXPAND_NVL_  :  enable OR expanded plan for NVL/DECODE predicate
PREDICATE

_OSS_SKGXP_UDP_  :  OSSLIB enable[!0]/disable[0] dynamic credit mgmt for
DYNAMIC_CREDIT_     SKGXP-UDP
MGMT

_OS_SCHED_HIGH_  :  OS high priority level
PRIORITY

_OTHER_WAIT_EVE  :  exclude event names from _other_wait_threshold
NT_EXCLUSION        calculations

_OTHER_WAIT_THR  :  threshold wait percentage for event wait class Other
ESHOLD

_OUTLINE_BITMAP  :  BITMAP_TREE hint enabled in outline
_TREE

_PARALLELISM_CO  :  set the parallelism cost fudge factor
ST_FUDGE_FACTOR

_PARALLEL_ADAPT  :  maximum number of users running with default DOP
IVE_MAX_USERS

_PARALLEL_BLACK  :  parallel execution blackbox enabled
BOX_ENABLED

_PARALLEL_BLACK  :  true if blackbox will be allocated in SGA, false if PGA
BOX_SGA

_PARALLEL_BLACK  :  parallel execution blackbox bucket size
BOX_SIZE

_PARALLEL_BROAD  :  enable broadcasting of small inputs to hash and sort
CAST_ENABLED        merge joins

_PARALLEL_CLUST  :  max percentage of the global buffer cache to use for
ER_CACHE_PCT        affinity

_PARALLEL_CLUST  :  policy used for parallel execution on
ER_CACHE_POLICY     cluster(ADAPTIVE/CACHED)

_PARALLEL_CONSE  :  conservative parallel statement queuing
RVATIVE_QUEUING

_PARALLEL_CTAS_  :  enable/disable parallel CTAS operation
ENABLED

_PARALLEL_DEFAU  :  default maximum number of instances for parallel query
LT_MAX_INSTANCE
S

_PARALLEL_EXECU  :  Alignment of PX buffers to OS page boundary
TION_MESSAGE_AL
IGN

_PARALLEL_FAKE_  :  fake db-scheduler percent used for testing
CLASS_PCT

_PARALLEL_FAULT  :  total number of faults fault-tolerance will handle
_TOLERANCE_THRE
SHOLD

_PARALLEL_FIXWR  :  Number of buckets for each round of fix write
ITE_BUCKET

_PARALLEL_HEART  :  interval of snapshot to track px msging between
BEAT_SNAPSHOT_I     instances
NTERVAL

_PARALLEL_HEART  :  maximum number of historical snapshots archived
BEAT_SNAPSHOT_M
AX

_PARALLEL_LOAD_  :  parallel execution load balanced slave allocation
BALANCING

_PARALLEL_LOAD_  :  number of threads to allocate per instance
BAL_UNIT

_PARALLEL_LOAD_  :  diffrence in percentage controlling px load propagation
PUBLISH_THRESHO
LD

_PARALLEL_MIN_M  :  minimum size of shared pool memory to reserve for pq
ESSAGE_POOL         servers

_PARALLEL_OPTIM  :  parallel optimization phase when all slaves are local
IZATION_PHASE_F
OR_LOCAL

_PARALLEL_QUEUI  :  parallel statement queuing: max waiting time in queue
NG_MAX_WAITINGT
IME

_PARALLEL_RECOV  :  stop at -position- to step through SMON
ERY_STOPAT

_PARALLEL_REPLA  :  Number of messages for each round of parallel replay
Y_MSG_LIMIT

_PARALLEL_SCALA  :  Parallel scalability criterion for parallel execution
BILITY

_PARALLEL_SERVE  :  idle time before parallel query server dies (in 1/100
R_IDLE_TIME         sec)

_PARALLEL_SERVE  :  sleep time between dequeue timeouts (in 1/100ths)
R_SLEEP_TIME

_PARALLEL_SLAVE  :  time(in seconds) to wait before retrying slave
_ACQUISITION_WA     acquisition
IT

_PARALLEL_STATE  :  parallel statement queuing enabled
MENT_QUEUING

_PARALLEL_SYSPL  :  TRUE to obey force parallel query/dml/ddl under System
S_OBEY_FORCE        PL/SQL

_PARALLEL_TIME_  :  unit of work used to derive the degree of parallelism
UNIT                (in seconds)

_PARALLEL_TXN_G  :  enable parallel_txn hint with updates and deletes
LOBAL

_PARAMETER_TABL  :  parameter table block size
E_BLOCK_SIZE

_PARTIAL_PWISE_  :  enable partial partition-wise join when TRUE
JOIN_ENABLED

_PARTITION_ADVI  :  enables sampling based partitioning validation
SOR_SRS_ACTIVE

_PARTITION_CDB_  :  partitioned cdb view evaluation enabled
VIEW_ENABLED

_PARTITION_LARG  :  Enables large extent allocation for partitioned tables
E_EXTENTS

_PARTITION_VIEW  :  enable/disable partitioned views
_ENABLED

_PART_ACCESS_VE  :  use version numbers to access versioned objects for
RSION_BY_NUMBER     partitioning

_PART_REDEF_GLO  :  online partition redefinition update global indexes
BAL_INDEX_UPDAT
E

_PASSWORDFILE_E  :  password file enqueue timeout in seconds
NQUEUE_TIMEOUT

_PCT_REFRESH_DO  :  materialized view PCT refreshes avoid double counting
UBLE_COUNT_PREV
ENTED

_PDB_USE_SEQUEN  :  Use sequence cache in PDB mode
CE_CACHE

_PDML_GIM_SAMPL  :  control separation of global index maintenance for PDML
ING

_PDML_GIM_STAGG  :  slaves start on different index when doing index maint
ERED

_PDML_SLAVES_DI  :  slaves start on different partition when doing index
FF_PART             maint

_PERCENT_FLASHB  :  Percent of flashback buffer filled to be considered
ACK_BUF_PARTIAL     partial full
_FULL

_PGACTX_CAP_STA  :  capture stacks for setting pgactx
CKS

_PGA_LARGE_EXTE  :  PGA large extent size
NT_SIZE

_PGA_LIMIT_CHEC  :  microseconds to wait for over limit confirmation
K_WAIT_TIME

_PGA_LIMIT_DUMP  :  dump PGA summary when signalling ORA-4036
_SUMMARY

_PGA_LIMIT_INTE  :  whether to interrupt smaller eligible processes
RRUPT_SMALLER

_PGA_LIMIT_MIN_  :  bytes of PGA usage below which process will not get
REQ_SIZE            ORA-4036

_PGA_LIMIT_SIMU  :  bytes of physical memory to determine
LATED_PHYSMEM_S     pga_aggregate_limit with
IZE

_PGA_LIMIT_TARG  :  default percent of pga_aggregate_target for
ET_PERC             pga_aggregate_limit

_PGA_LIMIT_TIME  :  seconds to wait until direct interrupt
_TO_INTERRUPT

_PGA_LIMIT_TIME  :  seconds to wait before treating process as idle
_UNTIL_IDLE

_PGA_LIMIT_TIME  :  seconds to wait before killing session over limit
_UNTIL_KILLED

_PGA_LIMIT_TRAC  :  trace pga_aggregate_limit activity
ING

_PGA_LIMIT_USE_  :  use immediate kill for sessions over limit
IMMEDIATE_KILL

_PGA_LIMIT_WATC  :  percentage of limit to have processes watch
H_PERC

_PGA_LIMIT_WATC  :  bytes of PGA usage at which process will begin watching
H_SIZE              limit

_PGA_MAX_SIZE    :  Maximum size of the PGA memory for one process
_PING_WAIT_FOR_  :  Wait for log force before block ping
LOG_FORCE

_PIN_TIME_STATI  :  if TRUE collect statistics for how long a current pin
STICS               is held

_PIVOT_IMPLEMEN  :  pivot implementation method
TATION_METHOD

_PKT_ENABLE      :  enable progressive kill test
_PKT_PMON_INTER  :  PMON process clean-up interval (cs)
VAL

_PKT_START       :  start progressive kill test instrumention
_PLAN_OUTLINE_D  :  explain plan outline data enabled
ATA

_PLAN_VERIFY_IM  :  Performance improvement criterion for evolving plan
PROVEMENT_MARGI     baselines
N

_PLAN_VERIFY_LO  :  Local time limit to use for an individual plan
CAL_TIME_LIMIT      verification

_PLSQL_ANON_BLO  :  PL/SQL anonymous block code-type
CK_CODE_TYPE

_PLSQL_CACHE_EN  :  PL/SQL Function Cache Enabled
ABLE

_PLSQL_DUMP_BUF  :  conditions upon which the PL/SQL circular buffer is
FER_EVENTS          dumped

_PLSQL_MAX_STAC  :  PL/SQL maximum stack size
K_SIZE

_PLSQL_MINIMUM_  :  plsql minimum cache hit percentage required to keep
CACHE_HIT_PERCE     caching active
NT

_PLSQL_NATIVE_F  :  Allocate PL/SQL native frames on the heap if size
RAME_THRESHOLD      exceeds this value

_PLSQL_NVL_OPTI  :  PL/SQL NVL optimize
MIZE

_PLUGGABLE_DATA  :  Debug flag for pluggable database related operations
BASE_DEBUG

_PMON_DEAD_BLKR  :  rate to check blockers are alive during cleanup (in
S_ALIVE_CHK_RAT     seconds)
E_SECS

_PMON_DEAD_BLKR  :  max blockers to check during cleanup
S_MAX_BLKRS

_PMON_DEAD_BLKR  :  max attempts per blocker while checking dead blockers
S_MAX_CLEANUP_A
TTEMPTS

_PMON_DEAD_BLKR  :  rate to scan for dead blockers during cleanup (in
S_SCAN_RATE_SEC     seconds)
S

_PMON_ENABLE_DE  :  look for dead blockers during PMON cleanup
AD_BLKRS

_PMON_LOAD_CONS  :  server load balancing constants (S,P,D,I,L,C,M)
TANTS

_PMON_MAX_CONSE  :  PMON max consecutive posts in main loop
C_POSTS

_POST_WAIT_QUEU  :  Post Wait Queues – Num Dynamic Queues
ES_DYNAMIC_QUEU
ES

_POST_WAIT_QUEU  :  Post Wait Queues – Num Per Class
ES_NUM_PER_CLAS
S

_PQQ_DEBUG_TXN_  :  pq queuing transaction active
ACT

_PQQ_ENABLED     :  Enable Resource Manager based Parallel Statement
Queuing

_PRECOMPUTE_GID  :  precompute gid values and copy them before returning a
_VALUES             row

_PREDICATE_ELIM  :  allow predicate elimination if set to TRUE
INATION_ENABLED

_PRED_MOVE_AROU  :  enables predicate move-around
ND

_PRED_PUSH_CDB_  :  predicate pushdown enabled for CDB views
VIEW_ENABLED

_PREFERED_STAND  :  standby db_unique_name prefered for krb operations
BY

_PRESCOMM        :  presume commit of IMU transactions
_PRE_REWRITE_PU  :  push predicates into views before rewrite
SH_PRED

_PRINT_INMEM_HE  :  print inmem ilm heatmap
ATMAP

_PRINT_REFRESH_  :  enable dbms_output of materialized view refresh
SCHEDULE            schedule

_PRINT_STAT_SEG  :  print ilm statistics segment
MENT

_PRIVATE_MEMORY  :  Start address of large extent memory segment
_ADDRESS

_PROJECTION_PUS  :  projection pushdown
HDOWN

_PROJECTION_PUS  :  level for projection pushdown debugging
HDOWN_DEBUG

_PROJECT_VIEW_C  :  enable projecting out unreferenced columns of a view
OLUMNS

_PROP_OLD_ENABL  :  Shift to pre 11g propagation behaviour
ED

_PROTECT_FRAME_  :  Protect cursor frame heaps
HEAPS

_PTN_CACHE_THRE  :  flags and threshold to control partition metadata
SHOLD               caching

_PUSH_JOIN_PRED  :  enable pushing join predicate inside a view
ICATE

_PUSH_JOIN_UNIO  :  enable pushing join predicate inside a union all view
N_VIEW

_PUSH_JOIN_UNIO  :  enable pushing join predicate inside a union view
N_VIEW2

_PX_ADAPTIVE_DI  :  determines the behavior of adaptive distribution
ST_METHOD           methods

_PX_ADAPTIVE_DI  :  Buffering / decision threshold for adaptive
ST_METHOD_THRES     distribution methods
HOLD

_PX_ADAPTIVE_OF  :  percentage for PQ adaptive offloading of granules
FLOAD_PERCENTAG
E

_PX_ADAPTIVE_OF  :  threshold (GB/s) for PQ adaptive offloading of granules
FLOAD_THRESHOLD

_PX_ASYNC_GETGR  :  asynchronous get granule in the slave
ANULE

_PX_BACK_TO_PAR  :  allow going back to parallel after a serial operation
ALLEL

_PX_BIND_PEEK_S  :  enables sharing of px cursors that were built using
HARING              bind peeking

_PX_BROADCAST_F  :  set the tq broadcasting fudge factor percentage
UDGE_FACTOR

_PX_BUFFER_TTL   :  ttl for px mesg buffers in seconds
_PX_CDB_VIEW_EN  :  parallel cdb view evaluation enabled
ABLED

_PX_CHUNKLIST_C  :  ratio of the number of chunk lists to the default DOP
OUNT_RATIO          per instance

_PX_COMPILATION  :  debug level for parallel compilation
_DEBUG

_PX_COMPILATION  :  tracing level for parallel compilation
_TRACE

_PX_CONCURRENT   :  enables pq with concurrent execution of serial inputs
_PX_CPU_AUTODOP  :  enables or disables auto dop cpu computation
_ENABLED

_PX_CPU_OPERATO  :  CPU operator bandwidth in MB/sec for DOP computation
R_BANDWIDTH

_PX_CPU_PROCESS  :  CPU process bandwidth in MB/sec for DOP computation
_BANDWIDTH

_PX_DP_ARRAY_SI  :  Max number of pq processes supported
ZE

_PX_DUMP_12805_  :  enables or disables tracing of 12805 signal source
SOURCE

_PX_DYNAMIC_OPT  :  turn off/on restartable qerpx dynamic optimization
_PX_DYNAMIC_SAM  :  num of samples for restartable qerpx dynamic
PLE_SIZE            optimization

_PX_EXECUTION_S  :  enable service-based constraint of px slave allocation
ERVICES_ENABLED

_PX_FILTER_PARA  :  enables or disables correlated filter parallelization
LLELIZED

_PX_FILTER_SKEW  :  enable correlated filter parallelization to handle skew
_HANDLING

_PX_FREELIST_LA  :  Divide the computed number of freelists by this power
TCH_DIVISOR         of 2

_PX_GIM_FACTOR   :  weighted autodop global index maintenance factor
_PX_GRANULE_BAT  :  maximum size of a batch of granules
CH_SIZE

_PX_GRANULE_RAN  :  enables or disables randomization of parallel scans
DOMIZE              rowid granules

_PX_GRANULE_SIZ  :  default size of a rowid range granule (in KB)
E

_PX_GROUPBY_PUS  :  perform group-by pushdown for parallel query
HDOWN

_PX_HOLD_TIME    :  hold px at execution time (unit: second)
_PX_HYBRID_TSM_  :  Enable Hybrid Temp Segment Merge/High Water Mark
HWMB_LOAD           Brokered load method

_PX_INDEX_SAMPL  :  parallel query sampling for index create based on
ING_OBJSIZE         object size

_PX_IO_PROCESS_  :  IO process bandwidth in MB/sec for computing DOP
BANDWIDTH

_PX_IO_SYSTEM_B  :  total IO system bandwidth in MB/sec for computing DOP
ANDWIDTH

_PX_JOIN_SKEW_H  :  enables skew handling for parallel joins
ANDLING

_PX_JOIN_SKEW_M  :  sets minimum frequency(%) for skewed value for parallel
INFREQ              joins

_PX_JOIN_SKEW_R  :  sets skew ratio for parallel joins
ATIO

_PX_KXIB_TRACIN  :  turn on kxib tracing
G

_PX_LOAD_BALANC  :  parallel load balancing policy
ING_POLICY

_PX_LOAD_FACTOR  :  weighted autodop load factor
_PX_LOAD_MONITO  :  threshold for pushing information to load slave
R_THRESHOLD         workload monitor

_PX_LOAD_PUBLIS  :  interval at which LMON will check whether to publish PX
H_INTERVAL          load

_PX_LOC_MSG_COS  :  CPU cost to send a PX message via shared memory
T

_PX_MAX_GRANULE  :  maximum number of rowid range granules to generate per
S_PER_SLAVE         slave

_PX_MAX_MAP_VAL  :  Maximum value of rehash mapping for PX
_PX_MAX_MESSAGE  :  percentage of shared pool for px msg buffers range
_POOL_PCT           [5,90]

_PX_MESSAGE_COM  :  enable compression of control messages for parallel
PRESSION            query

_PX_MINUS_INTER  :  enables pq for minus/interect operators
SECT

_PX_MIN_GRANULE  :  minimum number of rowid range granules to generate per
S_PER_SLAVE         slave

_PX_MONITOR_LOA  :  enable consumer load slave workload monitoring
D

_PX_NET_MSG_COS  :  CPU cost to send a PX message over the internconnect
T

_PX_NO_GRANULE_  :  prevent parallel partition granules to be sorted on
SORT                size

_PX_NO_STEALING  :  prevent parallel granule stealing in shared nothing
environment

_PX_NSS_PLANB    :  enables or disables NSS Plan B reparse with outline
_PX_NUMA_STEALI  :  enable/disable PQ granule stealing across NUMA nodes
NG_ENABLED

_PX_NUMA_SUPPOR  :  enable/disable PQ NUMA support
T_ENABLED

_PX_OBJECT_SAMP  :  parallel query sampling for base objects (100000 =
LING                100%)

_PX_OBJECT_SAMP  :  use base object sampling when possible for range
LING_ENABLED        distribution

_PX_ONEPASS_SLA  :  enable/disable one pass slave acquisition for parallel
VE_ACQUISITION      execution

_PX_PARALLELIZE  :  enables or disables expression evaluation
_EXPRESSION         parallelization

_PX_PARTIAL_ROL  :  perform partial rollup pushdown for parallel execution
LUP_PUSHDOWN

_PX_PARTITION_S  :  enables or disables parallel partition-based scan
CAN_ENABLED

_PX_PARTITION_S  :  least number of partitions per slave to start
CAN_THRESHOLD       partition-based scan

_PX_PROACTIVE_S  :  parallel proactive slave allocation threshold/unit
LAVE_ALLOC_THRE
SHOLD

_PX_PROC_CONSTR  :  reduce parallel_max_servers if greater than (processes
AIN                 – fudge)

_PX_PWG_ENABLED  :  parallel partition wise group by enabled
_PX_PWMR_ENABLE  :  parallel partition wise match recognize enabled
D

_PX_REPLICATION  :  enables or disables replication of small table scans
_ENABLED

_PX_ROUND_ROBIN  :  round robin row count to enq to next slave
_ROWCNT

_PX_ROWNUM_PD    :  turn off/on parallel rownum pushdown optimization
_PX_SEND_TIMEOU  :  IPC message  send timeout value in seconds
T

_PX_SINGLE_SERV  :  allow single-slave dfo in parallel query
ER_ENABLED

_PX_SLAVES_SHAR  :  slaves share cursors with QC
E_CURSORS

_PX_TQ_ROWHVS    :  turn on intra-row hash valueing sharing in TQ
_PX_TRACE        :  px trace parameter
_PX_UAL_SERIAL_  :  enables new pq for UNION operators
INPUT

_PX_USE_LARGE_P  :  Use Large Pool as source of PX buffers
OOL

_PX_WIF_DFO_DEC  :  NDV-aware DFO clumping of multiple window sorts
LUMPING

_PX_WIF_EXTEND_  :  extend TQ data redistribution keys for window functions
DISTRIBUTION_KE
YS

_PX_WIF_MIN_NDV  :  mininum NDV of TQ keys needed per slave for scalable
_PER_SLAVE          WiF PX

_PX_XTGRANULE_S  :  default size of a external table granule (in KB)
IZE

_QA_CONTROL      :  Oracle internal parameter to control QA
_QA_LRG_TYPE     :  Oracle internal parameter to specify QA lrg type
_QUERY_COST_REW  :  perform the cost based rewrite with materialized views
RITE

_QUERY_EXECUTIO  :  max size of query execution cache
N_CACHE_MAX_SIZ
E

_QUERY_MMVREWRI  :  query mmv rewrite maximum number of cmaps per dmap in
TE_MAXCMAPS         query disjunct

_QUERY_MMVREWRI  :  query mmv rewrite maximum number of dmaps per query
TE_MAXDMAPS         disjunct

_QUERY_MMVREWRI  :  query mmv rewrite maximum number of in-lists per
TE_MAXINLISTS       disjunct

_QUERY_MMVREWRI  :  query mmv rewrite maximum number of intervals per
TE_MAXINTERVALS     disjunct

_QUERY_MMVREWRI  :  query mmv rewrite maximum number of predicates per
TE_MAXPREDS         disjunct

_QUERY_MMVREWRI  :  query mmv rewrite maximum number of query in-list
TE_MAXQRYINLIST     values
VALS

_QUERY_MMVREWRI  :  query mmv rewrite maximum number of region permutations
TE_MAXREGPERM

_QUERY_ON_PHYSI  :  query on physical
CAL

_QUERY_REWRITE_  :  perform query rewrite before&after or only before view
1                   merging

_QUERY_REWRITE_  :  perform query rewrite before&after or only after view
2                   merging

_QUERY_REWRITE_  :  mv rewrite and drop redundant joins
DRJ

_QUERY_REWRITE_  :  rewrite with cannonical form for expressions
EXPRESSION

_QUERY_REWRITE_  :  mv rewrite fresh partition containment
FPC

_QUERY_REWRITE_  :  cost based query rewrite with MVs fudge factor
FUDGE

_QUERY_REWRITE_  :  mv rewrite with jg migration
JGMIGRATE

_QUERY_REWRITE_  :  query rewrite max disjuncts
MAXDISJUNCT

_QUERY_REWRITE_  :  allow query rewrite, if referenced tables are not
OR_ERROR            dataless

_QUERY_REWRITE_  :  perform general rewrite using set operator summaries
SETOPGRW_ENABLE

_QUERY_REWRITE_  :  prune frocol chain before rewrite after view-merging
VOP_CLEANUP

_QUEUE_BUFFER_M  :  max number of bytes to dump to trace file for queue
AX_DUMP_LEN         buffer dump

_RADM_ENABLED    :  Data Redaction
_RBR_CKPT_TRACI  :  Enable reuse block range checkpoint tracing
NG

_RCFG_DISABLE_V  :  if TRUE disables verify at reconfiguration
ERIFY

_RCFG_PARALLEL_  :  if TRUE enables parallel fixwrite at reconfiguration
FIXWRITE

_RCFG_PARALLEL_  :  if TRUE enables parallel replay and cleanup at
REPLAY              reconfiguration

_RCFG_PARALLEL_  :  if TRUE enables parallel verify at reconfiguration
VERIFY

_RDBMS_COMPATIB  :  default RDBMS compatibility level
ILITY

_RDBMS_INTERNAL  :  enable CELL FPLIB filtering within rdbms
_FPLIB_ENABLED

_RDBMS_INTERNAL  :  enable reraising of any exceptions in CELL FPLIB
_FPLIB_RAISE_ER
RORS

_READABLE_STAND  :  readable standby query scn sync timeout
BY_SYNC_TIMEOUT

_READ_MOSTLY_EN  :  Read mostly instances enable non-privileged logons
ABLE_LOGON

_READ_MOSTLY_IN  :  indicates this is a read_mostly instance
STANCE

_READ_MOSTLY_IN  :  internal parameter to control read mostly instance QA
STANCE_QA_CONTR
OL

_READ_MOSTLY_SL  :  Time to wait on read mostly node when hub not available
AVE_TIMEOUT

_READ_ONLY_VIOL  :  read-only violation dump to trace files
ATION_DUMP_TO_T
RACE

_READ_ONLY_VIOL  :  read-only violation array max count
ATION_MAX_COUNT

_READ_ONLY_VIOL  :  read-only violation array per module max count
ATION_MAX_COUNT
_PER_MODULE

_REALFREE_HEAP_  :  minimum max total heap size, in Kbytes
MAX_SIZE

_REALFREE_HEAP_  :  mode flags for real-free heap
MODE

_REALFREE_HEAP_  :  hint for real-free page size in bytes
PAGESIZE

_REALFREE_PQ_HE  :  hint for pq real-free page size in bytes
AP_PAGESIZE

_REAL_TIME_APPL  :  Simulation value with real time apply
Y_SIM

_RECOVERABLE_RE  :  Recoverable recovery batch size (percentage of buffer
COVERY_BATCH_PE     cache)
RCENT

_RECOVERY_ASSER  :  if TRUE, enable expensive integrity checks
TS

_RECOVERY_PERCE  :  recovery buffer cache percentage
NTAGE

_RECOVERY_READ_  :  number of recovery reads which can be outstanding
LIMIT

_RECOVERY_SKIP_  :  allow media recovery even if controlfile seq check
CFSEQ_CHECK         fails

_RECOVERY_VERIF  :  enable thread recovery write verify
Y_WRITES

_RECURSIVE_IMU_  :  recursive transactions may be IMU
TRANSACTIONS

_RECURSIVE_WITH  :  check for maximum level of recursion instead of
_MAX_RECURSION_     checking for cycles
LEVEL

_REDEF_ON_STATE  :  Use on-statement refresh in online redefinition
MENT

_REDO_COMPATIBI  :  general and redo/undo compatibility sanity check
LITY_CHECK

_REDO_LOG_DEBUG  :  Various configuration flags for debugging redo logs
_CONFIG

_REDO_LOG_RECOR  :  Life time in hours for redo log table records
D_LIFE

_REDO_READ_FROM  :  Enable reading redo from in-memory log buffer
_MEMORY

_REDO_TRANSPORT  :  Is ASYNC LNS compression allowed?
_COMPRESS_ALL

_REDO_TRANSPORT  :  redo transport sanity check bit mask
_SANITY_CHECK

_REDO_TRANSPORT  :  I/O stall time before terminating redo transport
_STALL_TIME         process

_REDO_TRANSPORT  :  long I/O stall time before terminating redo transport
_STALL_TIME_LON     process
G

_REDO_TRANSPORT  :  test stream connection?
_STREAM_TEST

_REDO_TRANSPORT  :  Stream network writes?
_STREAM_WRITES

_REDO_TRANSPORT  :  VIO size requirement
_VIO_SIZE_REQ

_REDUCE_SBY_LOG  :  enable standby log scan optimization
_SCAN

_REGION_NAME     :  gsm region name
_RELEASE_INSERT  :  maximum number of unusable blocks to unlink from
_THRESHOLD          freelist

_RELIABLE_BLOCK  :  if TRUE, no side channel on reliable interconnect
_SENDS

_RELOCATE_PDB    :  Relocate PDB to another RAC instance after it is closed
in the current instance

_RELOCATION_COM  :  ASM relocation commit batch size
MIT_BATCH_SIZE

_REMOTE_ASM      :  remote ASM configuration
_REMOTE_AWR_ENA  :  Enable/disable Remote AWR Mode
BLED

_REMOVE_AGGR_SU  :  enables removal of subsumed aggregated subquery
BQUERY

_REMOVE_EXF_COM  :  enable/disable removing of components EXF and RUL
PONENT              during upgrade

_REPLACE_VIRTUA  :  replace expressions with virtual columns
L_COLUMNS

_REPORT_CAPTURE  :  Time (in sec) between two cycles of report capture
_CYCLE_TIME         daemon

_REPORT_CAPTURE  :  100X Percent of system db time daemon is allowed over
_DBTIME_PERCENT     10 cycles
_CUTOFF

_REPORT_CAPTURE  :  No of report capture cycles after which db time is
_RECHARGE_WINDO     recharged
W

_REPORT_CAPTURE  :  Length of time band (in hours) in the reports time
_TIMEBAND_LENGT     bands table
H

_REPORT_REQUEST  :  Time (in min) after which a report request is deleted
_AGEOUT_MINUTES     from queue

_REP_BASE_PATH   :  base path for EM reports in database
_RESET_MAXCAP_H  :  reset maxcap history time
ISTORY

_RESOURCE_INCLU  :  Whether RESOURCE role includes UNLIMITED TABLESPACE
DES_UNLIMITED_T     privilege
ABLESPACE

_RESOURCE_MANAG  :  disable the resource manager always
ER_ALWAYS_OFF

_RESOURCE_MANAG  :  resource mgr top plan for internal use
ER_PLAN

_RESTORE_MAXOPE  :  restore assumption for maxopenfiles
NFILES

_RESTORE_SPFILE  :  restore spfile to this location
_RESULT_CACHE_A  :  result cache auto dml monitoring duration
UTO_DML_MONITOR
ING_DURATION

_RESULT_CACHE_A  :  result cache auto dml monitoring slot
UTO_DML_MONITOR
ING_SLOTS

_RESULT_CACHE_A  :  result cache auto dml threshold
UTO_DML_THRESHO
LD

_RESULT_CACHE_A  :  result cache auto dml trend threshold
UTO_DML_TREND_T
HRESHOLD

_RESULT_CACHE_A  :  result cache auto execution threshold
UTO_EXECUTION_T
HRESHOLD

_RESULT_CACHE_A  :  result cache auto max size allowed
UTO_SIZE_THRESH
OLD

_RESULT_CACHE_A  :  result cache auto time distance
UTO_TIME_DISTAN
CE

_RESULT_CACHE_A  :  result cache auto time threshold
UTO_TIME_THRESH
OLD

_RESULT_CACHE_B  :  result cache block size
LOCK_SIZE

_RESULT_CACHE_C  :  blocks to copy instead of pinning the result
OPY_BLOCK_COUNT

_RESULT_CACHE_D  :  result cache deterministic PLSQL functions
ETERMINISTIC_PL
SQL

_RESULT_CACHE_G  :  Are results available globally across RAC?
LOBAL

_RESULT_CACHE_T  :  maximum time (sec) a session waits for a result
IMEOUT

_RESUMABLE_CRIT  :  raise critical alert for resumable failure
ICAL_ALERT

_REUSE_INDEX_LO  :  number of blocks being examine for index block reuse
OP

_RE_FAST_SQL_OP  :  enables fast boxable sql operator
ERATOR

_RE_INDEPENDENT  :  defines max number of compiled cached expressions for
_EXPRESSION_CAC     iee
HE_SIZE

_RE_NUM_COMPLEX  :  defines max number of compiled complex operator per
_OPERATOR           ruleset-iee

_RE_NUM_ROWCACH  :  defines max number of complex operators loaded with row
E_LOAD              cache

_RE_RESULT_CACH  :  defines max number key for result cache hash table
E_KEYSIZ

_RE_RESULT_CACH  :  defines max number of cached elements for result cache
E_SIZE

_RIGHT_OUTER_HA  :  Right Outer/Semi/Anti Hash Enabled
SH_ENABLE

_RMAN_IO_PRIORI  :  priority at which rman backup i/o’s are done
TY

_RMAN_ROUNDROBI  :  Numa round robin placement for RMAN procs
N_PLACEMENT

_RM_CLUSTER_INT  :  interconnects for RAC use (RM)
ERCONNECTS

_RM_NUMA_SCHED_  :  Is Resource Manager (RM) related NUMA scheduled policy
ENABLE              enabled

_RM_NUMA_SIMULA  :  number of cpus for each pg for numa simulation in
TION_CPUS           resource manager

_RM_NUMA_SIMULA  :  number of PGs for numa simulation in resource manager
TION_PGS

_ROLLBACK_SEGME  :  number of undo segments
NT_COUNT

_ROLLBACK_SEGME  :  starting undo segment number
NT_INITIAL

_ROLLBACK_STOPA  :  stop at -position to step rollback
T

_ROND_TEST_MODE  :  rac one node test mode
_ROWLEN_FOR_CHA  :  maximum rowlen above which rows may be chained across
INING_THRESHOLD     blocks

_ROWSETS_CDB_VI  :  rowsets enabled for CDB views
EW_ENABLED

_ROWSETS_ENABLE  :  enable/disable rowsets
D

_ROWSETS_MAX_RO  :  maximum number of rows in a rowset
WS

_ROWSETS_TARGET  :  target size in bytes for space reserved in the frame
_MAXSIZE            for a rowset

_ROWSOURCE_EXEC  :  if TRUE, Oracle will collect rowsource statistics
UTION_STATISTIC
S

_ROWSOURCE_PROF  :  if TRUE, Oracle will capture active row sources in
ILING_STATISTIC     v$active_session_history
S

_ROWSOURCE_STAT  :  frequency of rowsource statistic sampling (must be a
ISTICS_SAMPFREQ     power of 2)

_ROWSRC_TRACE_L  :  Row source tree tracing level
EVEL

_ROW_CACHE_CURS  :  number of cached cursors for row cache management
ORS

_ROW_CR          :  enable row cr for all sql
_ROW_LOCKING     :  row-locking
_ROW_SHIPPING_E  :  enable row shipping explain plan support
XPLAIN

_ROW_SHIPPING_T  :  row shipping column selection threshold
HRESHOLD

_RTADDM_TRIGGER  :  comma-separated list of numeric arguments for RT addm
_ARGS               trigger

_RTADDM_TRIGGER  :  To enable or disable Real-Time ADDM automatic trigger
_ENABLED

_RTA_SYNC_WAIT_  :  RTA sync wait timeout
TIMEOUT

_RTC_INFEASIBLE  :  Redo Transport Compression infeasible threshold
_THRESHOLD

_SAMPLE_ROWS_PE  :  number of rows per block used for sampling IO
R_BLOCK             optimization

_SCALAR_TYPE_LO  :  threshold for VARCHAR2, NVARCHAR2, and RAW storage as
B_STORAGE_THRES     BLOB
HOLD

_SCATTER_GCS_RE  :  if TRUE, gcs resources are scattered uniformly across
SOURCES             sub pools

_SCATTER_GCS_SH  :  if TRUE, gcs shadows are scattered uniformly across sub
ADOWS               pools

_SCHED_DELAY_MA  :  scheduling delay maximum number of samples
X_SAMPLES

_SCHED_DELAY_ME  :  scheduling delay mesurement sleep us
ASUREMENT_SLEEP
_US

_SCHED_DELAY_OS  :  os tick granularity used by scheduling delay
_TICK_GRANULARI     calculations
TY_US

_SCHED_DELAY_SA  :  scheduling delay sample collection duration threshold
MPLE_COLLECTION     ms
_THRESH_MS

_SCHED_DELAY_SA  :  scheduling delay sampling interval in ms
MPLE_INTERVAL_M
S

_SCN_WAIT_INTER  :  max exponential backoff time for scn wait interface in
FACE_MAX_BACKOF     kta
F_TIME_SECS

_SCN_WAIT_INTER  :  max timeout for scn wait interface in kta
FACE_MAX_TIMEOU
T_SECS

_SDIAG_CRASH     :  sql diag crash
_SECOND_SPARE_P  :  second spare parameter – integer
ARAMETER

_SECUREFILES_BR  :  segment retry before dishonoring retention
EAKRETEN_RETRY

_SECUREFILES_BU  :  securefiles segment insert only optization
LKINSERT

_SECUREFILES_CO  :  securefiles concurrency estimate
NCURRENCY_ESTIM
ATE

_SECUREFILES_FG  :  segment retry before foreground waits
_RETRY

_SECUREFILES_FO  :  securefiles force flush before allocation
RCEFLUSH

_SECUREFILES_ME  :  securefiles memory as percent of SGA
MORY_PERCENTOFS
GA

_SECUREFILES_SP  :  securefiles segment utl optimization
CUTL

_SECUREFILE_LOG  :  Maximum number of open descriptors for securefile log
_NUM_LATCHES

_SECUREFILE_LOG  :  Size of securefile log buffer pool from SGA
_SHARED_POOL_SI
ZE

_SECUREFILE_TIM  :  collect kdlu timers and accumulate per layers
ERS

_SEC_ENABLE_TES  :  Whether to enable the test RPCs
T_RPCS

_SELECTIVITY_FO  :  enable/disable selectivity for storage reduction factor
R_SRF_ENABLED

_SELECT_ANY_DIC  :  Exclude USER$, XS$VERIFIERS, ENC$ and DEFAULT_PWD$ from
TIONARY_SECURIT     SELECT ANY DICTIONARY system privilege
Y_ENABLED

_SELFJOIN_MV_DU  :  control rewrite self-join algorithm
PLICATES

_SELFTUNE_CHECK  :  Self-tune checkpointing lag the tail of the redo log
POINTING_LAG

_SELFTUNE_CHECK  :  Percentage of total physical i/os for self-tune ckpt
POINT_WRITE_PCT

_SEM_PER_SEMID   :  the exact number of semaphores per semaphore set to
allocate

_SEND_AST_TO_FO  :  if TRUE, send ast message to foreground
REGROUND

_SEND_CLOSE_WIT  :  if TRUE, send close with block even with direct sends
H_BLOCK

_SEND_REQUESTS_  :  if TRUE, try to send CR requests to PI buffers
TO_PI

_SERIALIZABLE    :  serializable
_SERIALIZE_LGWR  :  Serialize LGWR SYNC local and remote io
_SYNC_IO

_SERIAL_DIRECT_  :  enable direct read in serial
READ

_SERIAL_LOG_WRI  :  Serialize log write slave I/O
TE_WORKER_IO

_SERIAL_RECOVER  :  force serial recovery or parallel recovery
Y

_SERVICE_CLEANU  :  timeout to peform service cleanup
P_TIMEOUT

_SESSION_ALLOCA  :  one latch per group of sessions
TION_LATCHES

_SESSION_CACHED  :  Number of pl/sql instantiations to cache in a session.
_INSTANTIATIONS

_SESSION_CONTEX  :  session app context size
T_SIZE

_SESSION_IDLE_B  :  one latch per session or a latch per group of sessions
IT_LATCHES

_SESSION_PAGE_E  :  Session Page Extent Size
XTENT

_SESSION_WAIT_H  :  enable session wait history collection
ISTORY

_SET_CONTAINER_  :  set container service
SERVICE

_SET_MGD_RECOVE  :  set mgd recovery state to new value
RY_STATE

_SEVENTEENTH_SP  :  seventeenth spare parameter – string
ARE_PARAMETER

_SEVENTH_SPARE_  :  seventh spare parameter – integer
PARAMETER

_SF_DEFAULT_ENA  :  enable 12g securefile default
BLED

_SGA_ALLOC_SLAV  :  Termination timeout in secs for SA** slaves
ES_TERM_TIMEOUT
_SECS

_SGA_CLEAR_DUMP  :  Allow dumping encrypted blocks in clear for debugging
_SGA_EARLY_TRAC  :  sga early trace event
E

_SGA_LOCKING     :  sga granule locking state
_SHARED_IOP_MAX  :  maximum shared io pool size
_SIZE

_SHARED_IO_POOL  :  Shared IO pool buffer size
_BUF_SIZE

_SHARED_IO_POOL  :  trace kcbi debug info to tracefile
_DEBUG_TRC

_SHARED_IO_POOL  :  Size of shared IO pool
_SIZE

_SHARED_IO_SET_  :  shared io pool size set internal value – overwrite zero
VALUE               user size

_SHARED_POOL_MA  :  shared pool maximum size when auto SGA enabled
X_SIZE

_SHARED_POOL_MI  :  shared pool minimum size when auto SGA enabled
NSIZE_ON

_SHARED_POOL_RE  :  minimum allocation size in bytes for reserved area of
SERVED_MIN_ALLO     shared pool
C

_SHARED_POOL_RE  :  percentage memory of the shared pool allocated for the
SERVED_PCT          reserved area

_SHARED_SERVER_  :  shared server load balance
LOAD_BALANCE

_SHARED_SERVER_  :  number of shared server common queues
NUM_QUEUES

_SHMPROTECT      :  allow mprotect use for shared memory
_SHORT_STACK_TI  :  short stack timeout in ms
MEOUT_MS

_SHOW_MGD_RECOV  :  Show internal managed recovery state
ERY_STATE

_SHRD_QUE_TM_PR  :  number of sharded queue Time Managers to start
OCESSES

_SHRD_QUE_TM_ST  :  Shaded queue statistics collection window duration
ATISTICS_DURATI
ON

_SHRUNK_AGGS_DI  :  percentage of exceptions at which to switch to full
SABLE_THRESHOLD     length aggs

_SHRUNK_AGGS_EN  :  enable use of variable sized buffers for non-distinct
ABLED               aggregates

_SHUTDOWN_COMPL  :  minutes for shutdown operation to wait for sessions to
ETION_TIMEOUT_M     complete
INS

_SIDE_CHANNEL_B  :  number of messages to batch in a side channel message
ATCH_SIZE           (DFS)

_SIDE_CHANNEL_B  :  timeout before shipping out the batched side
ATCH_TIMEOUT        channelmessages in seconds

_SIDE_CHANNEL_B  :  timeout before shipping out the batched side
ATCH_TIMEOUT_MS     channelmessages in milliseconds

_SIMPLE_VIEW_ME  :  control simple view merging performed by the optimizer
RGING

_SIMULATED_LOG_  :  Simulated latency of log writes (usecs)
WRITE_USECS

_SIMULATE_DISK_  :  Enables skgfr to report simulated disk sector size
SECTORSIZE

_SIMULATE_IO_WA  :  Simulate I/O wait to test segment advisor
IT

_SIMULATE_MEM_T  :  simulate auto memory sga/pga transfers
RANSFER

_SIMULATOR_BUCK  :  LRU bucket minimum delta
ET_MINDELTA

_SIMULATOR_INTE  :  simulator internal bound percent
RNAL_BOUND

_SIMULATOR_LRU_  :  LRU list rebalance threshold (size)
REBALANCE_SIZTH
R

_SIMULATOR_LRU_  :  LRU list rebalance threshold (count)
REBALANCE_THRES
H

_SIMULATOR_LRU_  :  LRU scan count
SCAN_COUNT

_SIMULATOR_PIN_  :  maximum count of invalid chunks on pin list
INVAL_MAXCNT

_SIMULATOR_RESE  :  simulator reserved heap count
RVED_HEAP_COUNT

_SIMULATOR_RESE  :  simulator reserved object count
RVED_OBJ_COUNT

_SIMULATOR_SAMP  :  sampling factor for the simulator
LING_FACTOR

_SIMULATOR_UPPE  :  upper bound multiple of pool size
R_BOUND_MULTIPL
E

_SINGLE_PROCESS  :  run without detached processes
_SIOP_FLASHBACK  :  Shared IO pool flashback io completion scan depth
_SCANDEPTH

_SIOP_PERC_OF_B  :  percentange * 100 of cache to transfer to shared io
C_X100              pool

_SIXTEENTH_SPAR  :  sixteenth spare parameter – string
E_PARAMETER

_SIXTH_SPARE_PA  :  sixth spare parameter – integer
RAMETER

_SKGXPG_LAST_PA  :  last defined skgxpg parameter – oss
RAMETER

_SKGXP_ANT_OPTI  :  SKGXP ANT options (oss)
ONS

_SKGXP_CTX_FLAG  :  IPC debug options flags (oss)
S1

_SKGXP_CTX_FLAG  :  IPC debug options flags mask (oss)
S1MASK

_SKGXP_DYNAMIC_  :  IPC protocol override
PROTOCOL            (!0/-1=*,2=UDP,3=RDS,0x1000=ipc_X)

_SKGXP_GEN_ANT_  :  VRPC request timeout when ANT disabled
OFF_RPC_TIMEOUT
_IN_SEC

_SKGXP_GEN_ANT_  :  ANT protocol ping miss count
PING_MISSCOUNT

_SKGXP_GEN_RPC_  :  ANT ping protocol miss count
NO_PATH_CHECK_I
N_SEC

_SKGXP_GEN_RPC_  :  VRPC request timeout when ANT enabled
TIMEOUT_IN_SEC

_SKGXP_INETS     :  limit SKGXP networks (oss)
_SKGXP_MIN_RPC_  :  IPC threshold for rpc rcv zcpy operation (default = 0 –
RCV_ZCPY_LEN        disabled)

_SKGXP_MIN_ZCPY  :  IPC threshold for zcpy operation (default = 0 –
_LEN                disabled)

_SKGXP_REAPING   :  tune skgxp OSD reaping limit
_SKGXP_RGN_PORT  :  region socket limits (0xFFFFNNXX): F=flags, N=min,
S                   X=max

_SKGXP_SPARE_PA  :  ipc oss spare parameter 1
RAM1

_SKGXP_SPARE_PA  :  ipc oss spare parameter 2
RAM2

_SKGXP_SPARE_PA  :  ipc oss spare parameter 3
RAM3

_SKGXP_SPARE_PA  :  ipc oss spare parameter 4
RAM4

_SKGXP_SPARE_PA  :  ipc oss spare parameter 5
RAM5

_SKGXP_UDP_ACH_  :  time in minutes before idle ach’s are reaped
REAPING_TIME

_SKGXP_UDP_ACK_  :  Enables delayed acks
DELAY

_SKGXP_UDP_ENAB  :  Enables dynamic credit management
LE_DYNAMIC_CRED
IT_MGMT

_SKGXP_UDP_HIWA  :  ach hiwat mark warning interval
T_WARN

_SKGXP_UDP_INTE  :  time in seconds between interface detection checks
RFACE_DETECTION
_TIME_SECS

_SKGXP_UDP_KEEP  :  connection idle time in seconds before keep alive is
_ALIVE_PING_TIM     initiated. min: 30 sec max: 1800 sec default: 300 sec
ER_SECS

_SKGXP_UDP_LMP_  :  MTU size for UDP LMP testing
MTUSIZE

_SKGXP_UDP_LMP_  :  enable UDP long message protection
ON

_SKGXP_UDP_TIME  :  diagnostic log buffering space (in bytes) for timed
D_WAIT_BUFFERIN     wait (0 means unbufferd
G

_SKGXP_UDP_TIME  :  time in seconds before timed wait is invoked
D_WAIT_SECONDS

_SKGXP_UDP_USE_  :  disable use of high speek timer
TCB

_SKGXP_ZCPY_FLA  :  IPC zcpy options flags
GS

_SKIP_ACFS_CHEC  :  Override checking if on an ACFS file system
KS

_SKIP_ASSUME_MS  :  if TRUE, skip assume message for consigns at the master
G

_SKIP_TRSTAMP_C  :  Skip terminal recovery stamp check
HECK

_SLAVE_MAPPING_  :  enable slave mapping when TRUE
ENABLED

_SLAVE_MAPPING_  :  force the number of slave group in a slave mapper
GROUP_SIZE

_SLAVE_MAPPING_  :  maximum skew before slave mapping is disabled
SKEW_RATIO

_SMALL_TABLE_TH  :  lower threshold level of table size for direct reads
RESHOLD

_SMM_ADVICE_ENA  :  if TRUE, enable v$pga_advice
BLED

_SMM_ADVICE_LOG  :  overwrites default size of the PGA advice workarea
_SIZE               history log

_SMM_AUTO_COST_  :  if TRUE, use the AUTO size policy cost functions
ENABLED

_SMM_AUTO_MAX_I  :  Maximum IO size (in KB) used by sort/hash-join in auto
O_SIZE              mode

_SMM_AUTO_MIN_I  :  Minimum IO size (in KB) used by sort/hash-join in auto
O_SIZE              mode

_SMM_BOUND       :  overwrites memory manager automatically computed bound
_SMM_CONTROL     :  provides controls on the memory manager
_SMM_FREEABLE_R  :  value in KB of the instance freeable PGA memory to
ETAIN               retain

_SMM_ISORT_CAP   :  maximum work area for insertion sort(v1)
_SMM_MAX_SIZE    :  maximum work area size in auto mode (serial)
_SMM_MAX_SIZE_S  :  static maximum work area size in auto mode (serial)
TATIC

_SMM_MIN_SIZE    :  minimum work area size in auto mode
_SMM_PX_MAX_SIZ  :  maximum work area size in auto mode (global)
E

_SMM_PX_MAX_SIZ  :  static maximum work area size in auto mode (global)
E_STATIC

_SMM_RETAIN_SIZ  :  work area retain size in SGA for shared server sessions
E                   (0 for AUTO)

_SMM_TRACE       :  Turn on/off tracing for SQL memory manager
_SMON_INTERNAL_  :  limit of SMON internal errors
ERRLIMIT

_SMON_UNDO_SEG_  :  limit of SMON continous undo segments re-scan
RESCAN_LIMIT

_SMU_DEBUG_MODE  :  <debug-flag> – set debug event for testing SMU
operations

_SMU_ERROR_SIMU  :  site ID of error simulation in KTU code
LATION_SITE

_SMU_ERROR_SIMU  :  error type for error simulation in KTU code
LATION_TYPE

_SMU_TIMEOUTS    :  comma-separated *AND double-quoted* list of AUM
timeouts: mql, tur, sess_exprn, qry_exprn, slot_intvl

_SNAPSHOT_RECOV  :  enable/disable snapshot recovery
ERY_ENABLED

_SORT_ELIMINATI  :  cost ratio for sort eimination under first_rows mode
ON_COST_RATIO

_SORT_MULTIBLOC  :  multi-block read count for sort
K_READ_COUNT

_SORT_SPILL_THR  :  force sort to spill to disk each time this many rows
ESHOLD              are received

_SORT_SYNC_MIN_  :  controls the size of mininum run size for synchronized
SPILLSIZE           spill (in kb)

_SORT_SYNC_MIN_  :  controls the mininum spill size for synchronized spill
SPILL_THRESHOLD     (in percent)

_SPACE_ALIGN_SI  :  space align size
ZE

_SPARE_TEST_PAR  :  Spare test parameter
AMETER

_SPAWN_DIAG_OPT  :  thread spawn diagnostic options
S

_SPAWN_DIAG_THR  :  thread spawn diagnostic minimal threshold in seconds
ESH_SECS

_SPIN_COUNT      :  Amount to spin waiting for a latch
_SPR_MAX_RULES   :  maximum number of rules in sql spreadsheet
_SPR_PUSH_PRED_  :  push predicates through reference spreadsheet
REFSPR

_SPR_USE_AW_AS   :  enable AW for hash table in spreadsheet
_SPR_USE_HASH_T  :  use hash table for spreadsheet
ABLE

_SQLEXEC_PROGRE  :  sql execution progression monitoring cost threshold
SSION_COST

_SQLMON_BINDS_X  :  format of column binds_xml in [G]V$SQL_MONITOR
ML_FORMAT

_SQLMON_MAX_PLA  :  Maximum number of plans entry that can be monitored.
N                   Defaults to 20 per CPU

_SQLMON_MAX_PLA  :  Number of plan lines beyond which a plan cannot be
NLINES              monitored

_SQLMON_RECYCLE  :  Minimum time (in s) to wait before a plan entry can be
_TIME               recycled

_SQLMON_THRESHO  :  CPU/IO time threshold before a statement is monitored.
LD                  0 is disabled

_SQLTUNE_CATEGO  :  Parsed category qualifier for applying hintsets
RY_PARSED

_SQL_ANALYZE_EN  :  SQL Analyze Autonomous Transaction control parameter
ABLE_AUTO_TXN

_SQL_ANALYZE_PA  :  SQL Analyze Parse Model control parameter
RSE_MODEL

_SQL_COMPATIBIL  :  sql compatability bit vector
ITY

_SQL_CONNECT_CA  :  SQL Connect Capability Table Override
PABILITY_OVERRI
DE

_SQL_CONNECT_CA  :  SQL Connect Capability Table (testing only)
PABILITY_TABLE

_SQL_DIAG_REPO_  :  duarations where sql diag repository are retained
ORIGIN

_SQL_DIAG_REPO_  :  retain sql diag repository to cursor or not
RETAIN

_SQL_HASH_DEBUG  :  Hash value of the SQL statement to debug
_SQL_HVSHARE_DE  :  control hash value sharing debug level
BUG

_SQL_HVSHARE_TH  :  threshold to control hash value sharing across
RESHOLD             operators

_SQL_MODEL_UNFO  :  specifies compile-time unfolding of sql model forloops
LD_FORLOOPS

_SQL_NCG_MODE    :  Optimization mode for SQL NCG
_SQL_PLAN_DIREC  :  controls internal SQL Plan Directive management
TIVE_MGMT_CONTR     activities
OL

_SQL_PLAN_MANAG  :  controls various internal SQL Plan Management
EMENT_CONTROL       algorithms

_SQL_SHOW_EXPRE  :  show expression evalution as shared hash producer in
VAL                 plan

_SRVNTFN_JOBSUB  :  srvntfn job submit interval
MIT_INTERVAL

_SRVNTFN_JOB_DE  :  srvntfn job deq timeout
Q_TIMEOUT

_SRVNTFN_MAX_CO  :  srvntfn max concurrent jobs
NCURRENT_JOBS

_SRVNTFN_Q_MSGC  :  srvntfn q msg count for job exit
OUNT

_SRVNTFN_Q_MSGC  :  srvntfn q msg count increase for job submit
OUNT_INC

_SSCR_DIR        :  Session State Capture and Restore DIRectory object
_SSCR_OSDIR      :  Session State Capture and Restore OS DIRectory
_STACK_GUARD_LE  :  stack guard level
VEL

_STANDBY_CAUSAL  :  readable standby causal heartbeat timeout
_HEARTBEAT_TIME
OUT

_STANDBY_FLUSH_  :  standby flush mode
MODE

_STANDBY_IMPLIC  :  minutes to wait for redo during standby implicit
IT_RCV_TIMEOUT      recovery

_STANDBY_SWITCH  :  Number of secords for standby switchover enqueue
OVER_TIMEOUT        timeout

_STATIC_BACKGRO  :  static backgrounds
UNDS

_STATISTICS_BAS  :  enable/disable the use of statistics for storage
ED_SRF_ENABLED      reduction factor

_STAT_AGGS_ONE_  :  enable one pass algorithm for variance-related
PASS_ALGORITHM      functions

_STA_CONTROL     :  SQL Tuning Advisory control parameter
_STEP_DOWN_LIMI  :  step down limit in percentage
T_IN_PCT

_STREAMS_POOL_M  :  streams pool maximum size when auto SGA enabled
AX_SIZE

_SUBQUERY_PRUNI  :  subquery pruning cost factor
NG_COST_FACTOR

_SUBQUERY_PRUNI  :  enable the use of subquery predicates to perform
NG_ENABLED          pruning

_SUBQUERY_PRUNI  :  enable the use of subquery predicates with MVs to
NG_MV_ENABLED       perform pruning

_SUBQUERY_PRUNI  :  subquery pruning reduction factor
NG_REDUCTION

_SUPPRESS_IDENT  :  supress owner index name err msg
IFIERS_ON_DUPKE
Y

_SWITCHOVER_TIM  :  Switchover timeout in minutes
EOUT

_SWITCHOVER_TO_  :  option for graceful switchover to standby
STANDBY_OPTION

_SWITCHOVER_TO_  :  Switchover to standby switches log for open redo
STANDBY_SWITCH_     threads
LOG

_SWITCH_CURRENT  :  switch current uses scan scn
_SCAN_SCN

_SWRF_METRIC_FR  :  Enable/disable SWRF Metric Frequent Mode Collection
EQUENT_MODE

_SWRF_MMON_DBFU  :  Enable/disable SWRF MMON DB Feature Usage
S

_SWRF_MMON_FLUS  :  Enable/disable SWRF MMON FLushing
H

_SWRF_MMON_METR  :  Enable/disable SWRF MMON Metrics Collection
ICS

_SWRF_ON_DISK_E  :  Parameter to enable/disable SWRF
NABLED

_SWRF_TEST_ACTI  :  test action parameter for SWRF
ON

_SWRF_TEST_DBFU  :  Enable/disable DB Feature Usage Testing
S

_SYNC_PRIMARY_W  :  wait time for alter session sync with primary
AIT_TIME

_SYNONYM_REPOIN  :  whether to trace metadata comparisons for synonym
T_TRACING           repointing

_SYSAUX_TEST_PA  :  test parameter for SYSAUX
RAM

_SYSTEM_API_INT  :  enable debug tracing for system api interception
ERCEPTION_DEBUG

_SYSTEM_INDEX_C  :  optimizer percent system index caching
ACHING

_SYSTEM_TRIG_EN  :  are system triggers enabled
ABLED

_SYS_LOGON_DELA  :  failed logon delay for sys
Y

_TABLESPACES_PE  :  estimated number of tablespaces manipulated by each
R_TRANSACTION       transaction

_TABLE_LOOKUP_P  :  table lookup prefetch vector size
REFETCH_SIZE

_TABLE_LOOKUP_P  :  table lookup prefetch threshold
REFETCH_THRESH

_TABLE_SCAN_COS  :  bump estimated full table scan and index ffs cost by
T_PLUS_ONE          one

_TARGET_LOG_WRI  :  Do log write if this many redo blocks in buffer
TE_SIZE             (auto=0)

_TARGET_LOG_WRI  :  How long LGWR will wait for redo to accumulate (csecs)
TE_SIZE_TIMEOUT

_TARGET_RBA_MAX  :  target rba max log lag percentage
_LAG_PERCENTAGE

_TA_LNS_WAIT_FO  :  LNS Wait time for arhcived version of online log
R_ARCH_LOG

_TDB_DEBUG_MODE  :  set debug mode for testing transportable database
_TEMP_TRAN_BLOC  :  number of blocks for a dimension before we temp
K_THRESHOLD         transform

_TEMP_TRAN_CACH  :  determines if temp table is created with cache option
E

_TEMP_UNDO_DISA  :  is temp undo disabled on ADG
BLE_ADG

_TENTH_SPARE_PA  :  tenth spare parameter – integer
RAMETER

_TEST_HM_EXTENT  :  heatmap related – to be used by oracle dev only
_MAP

_TEST_KSUSIGSKI  :  test the function ksusigskip
P

_TEST_PARAM_1    :  test parmeter 1 – integer
_TEST_PARAM_2    :  test parameter 2 – string
_TEST_PARAM_3    :  test parameter 3 – string
_TEST_PARAM_4    :  test parameter 4 – string list
_TEST_PARAM_5    :  test parmeter 5 – deprecated integer
_TEST_PARAM_6    :  test parmeter 6 – size (ub8)
_TEST_PARAM_7    :  test parameter 7 – big integer list
_TEST_PARAM_8    :  test parameter 8 – cdb tests
_THIRD_SPARE_PA  :  third spare parameter – integer
RAMETER

_THIRTEENTH_SPA  :  thirteenth spare parameter – integer
RE_PARAMETER

_THREAD_STATE_C  :  Thread state change timeout for PnP instance (in sec)
HANGE_TIMEOUT_P
NP

_THRESHOLD_ALER  :  if 1, issue threshold-based alerts
TS_ENABLE

_TIMEMODEL_COLL  :  enable timemodel collection
ECTION

_TIMEOUT_ACTION  :  enables or disables KSU timeout actions
S_ENABLED

_TIMER_PRECISIO  :  VKTM timer precision in milli-sec
N

_TIME_BASED_RCV  :  time-based incremental recovery checkpoint target in
_CKPT_TARGET        sec

_TIME_BASED_RCV  :  time-based incremental recovery file header update
_HDR_UPDATE_INT     interval in sec
ERVAL

_TOTAL_LARGE_EX  :  Total memory for allocating large extents
TENT_MEMORY

_TQ_DUMP_PERIOD  :  time period for duping of TQ statistics (s)
_TRACE_BUFFERS   :  trace buffer sizes per process
_TRACE_BUFFER_W  :  trace buffer busy wait timeouts
AIT_TIMEOUTS

_TRACE_DUMP_ALL  :  if TRUE on error buckets of all processes will be
_PROCS              dumped to the current trace file

_TRACE_DUMP_CLI  :  if TRUE dump client (ie. non-kst) buckets
ENT_BUCKETS

_TRACE_DUMP_CUR  :  if TRUE on error just dump our process bucket
_PROC_ONLY

_TRACE_DUMP_STA  :  if TRUE filter trace dumps to always loaded dlls
TIC_ONLY

_TRACE_EVENTS    :  trace events enabled at startup
_TRACE_FILES_PU  :  Create publicly accessible trace files
BLIC

_TRACE_KQLIDP    :  trace kqlidp0 operation
_TRACE_KTFS      :  Trace ILM Stats Tracking
_TRACE_KTFS_MEM  :  Debug memleak
_TRACE_NAVIGATI  :  enabling trace navigation linking
ON_SCOPE

_TRACE_PIN_TIME  :  trace how long a current pin is held
_TRACE_POOL_SIZ  :  trace pool size in bytes
E

_TRACE_PROCESSE  :  enable KST tracing in process
S

_TRACE_TEMP      :  Trace Tempspace Management
_TRACE_VIRTUAL_  :  trace virtual columns exprs
COLUMNS

_TRACK_METRICS_  :  Enable/disable Metrics Memory Tracking
MEMORY

_TRANSACTION_AU  :  transaction auditing records generated in the redo log
DITING

_TRANSACTION_RE  :  max number of parallel recovery slaves that may be used
COVERY_SERVERS

_TRANSIENT_LOGI  :  clear KCCDI2HMRP flag during standby recovery
CAL_CLEAR_HOLD_
MRP_BIT

_TRUNCATE_OPTIM  :  do truncate optimization if set to TRUE
IZATION_ENABLED

_TSENC_OBFUSCAT  :  Encryption key obfuscation in memory
E_KEY

_TSENC_TRACING   :  Enable TS encryption tracing
_TSM_CONNECT_ST  :  TSM test connect string
RING

_TSM_DISABLE_AU  :  Disable TSM auto cleanup actions
TO_CLEANUP

_TSTZ_LOCALTIME  :  Should TTC not convert to LocalTime to preserve
_BYPASS             Timestamp with Timezone values

_TTS_ALLOW_CHAR  :  allow plugging in a tablespace with an incompatible
SET_MISMATCH        character set

_TWELFTH_SPARE_  :  twelfth spare parameter – integer
PARAMETER

_TWENTIETH_SPAR  :  twentieth spare parameter – string
E_PARAMETER

_TWENTY-EIGHTH_  :  twenty-eighth spare parameter – boolean
SPARE_PARAMETER

_TWENTY-FIFTH_S  :  twenty-fifth spare parameter – string list
PARE_PARAMETER

_TWENTY-FIRST_S  :  twenty-first spare parameter – string list
PARE_PARAMETER

_TWENTY-FOURTH_  :  twenty-fourth spare parameter – string list
SPARE_PARAMETER

_TWENTY-SECOND_  :  twenty-second spare parameter – string list
SPARE_PARAMETER

_TWENTY-SEVENTH  :  twenty-seventh spare parameter – boolean
_SPARE_PARAMETE
R

_TWENTY-SIXTH_S  :  twenty-sixth spare parameter – boolean
PARE_PARAMETER

_TWENTY-THIRD_S  :  twenty-third spare parameter – string list
PARE_PARAMETER

_TWO_PASS        :  enable two-pass thread recovery
_TWO_PASS_REVER  :  uses two-pass reverse polish alg. to generate canonical
SE_POLISH_ENABL     forms
ED

_TXN_CONTROL_TR  :  size the in-memory buffer size of txn control
ACE_BUF_SIZE

_UGA_CGA_LARGE_  :  UGA/CGA large extent size
EXTENT_SIZE

_ULTRAFAST_LATC  :  maintain fast-path statistics for ultrafast latches
H_STATISTICS

_UNDO_AUTOTUNE   :  enable auto tuning of undo_retention
_UNDO_BLOCK_COM  :  enable undo block compression
PRESSION

_UNDO_DEBUG_MOD  :  debug flag for undo related operations
E

_UNDO_DEBUG_USA  :  invoke undo usage functions for testing
GE

_UNIFIED_AUDIT_  :  Unified Audit SGA Queue Flush Interval
FLUSH_INTERVAL

_UNIFIED_AUDIT_  :  Unified Audit SGA Queue Flush Threshold
FLUSH_THRESHOLD

_UNIFIED_AUDIT_  :  Disable Default Unified Audit Policies on DB Create
POLICY_DISABLED

_UNION_REWRITE_  :  expand queries with GSets into UNIONs for rewrite
FOR_GS

_UNNEST_SUBQUER  :  enables unnesting of complex subqueries
Y

_UNUSED_BLOCK_C  :  enable unused block compression
OMPRESSION

_UPDATE_DATAFIL  :  user requested update of datafile headers of locally
E_HEADERS_WITH_     managed datafiles with space information
SPACE_INFORMATI
ON

_UPDDEL_DBA_HAS  :  controls masking of lower order bits in DBA
H_MASK_BITS

_USE_ADAPTIVE_L  :  Adaptively switch between post/wait and polling
OG_FILE_SYNC

_USE_BEST_FIT    :  use best fit to allocate space
_USE_COLUMN_STA  :  enable the use of column statistics for DDP functions
TS_FOR_FUNCTION

_USE_FIPS_MODE   :  Enable use of crypographic libraries in FIPS mode
_USE_HIDDEN_PAR  :  use hidden partitions
TITIONS

_USE_HYBRID_ENC  :  Enable platform optimized encryption in hybrid mode
RYPTION_MODE

_USE_ISM         :  Enable Shared Page Tables – ISM
_USE_ISM_FOR_PG  :  Use ISM for allocating large extents
A

_USE_NOSEGMENT_  :  use nosegment indexes in explain plan
INDEXES

_USE_PLATFORM_C  :  Enable platform optimized compression implementation
OMPRESSION_LIB

_USE_PLATFORM_E  :  Enable platform optimized encryption implementation
NCRYPTION_LIB

_USE_REALFREE_H  :  use real-free based allocator for PGA memory
EAP

_USE_SEQ_PROCES  :  whether to use process local seq cache
S_CACHE

_USE_SINGLE_LOG  :  Use a single process for redo log writing
_WRITER

_USE_VECTOR_POS  :  use vector post
T

_USE_ZERO_COPY_  :  Should network vector IO interface be used for data
IO                  transfer

_UTLMMIG_TABLE_  :  enable/disable utlmmig table stats gathering at upgrade
STATS_GATHERING

_UTS_FIRST_SEGM  :  Should we retain the first trace segment
ENT_RETAIN

_UTS_FIRST_SEGM  :  Maximum size (in bytes) of first segments
ENT_SIZE

_UTS_TRACE_DISK  :  Trace disk threshold parameter
_THRESHOLD

_UTS_TRACE_SEGM  :  Maximum number of trace segments
ENTS

_UTS_TRACE_SEGM  :  Maximum size (in bytes) of a trace segment
ENT_SIZE

_VALIDATE_FLASH  :  Scan database to validate result of flashback database
BACK_DATABASE

_VALIDATE_METRI  :  Enable/disable SGA Metric Structure validation
C_GROUPS

_VALIDATE_READM  :  validate redo blocks read from in-memory log buffer
EM_REDO

_VENDOR_LIB_LOC  :  Vendor library search root directory
_VERIFY_FG_LOG_  :  LGWR verifies redo checksums generated by foreground
CHECKSUM            processes

_VERIFY_FLASHBA  :  Verify that the redo logs needed for flashback are
CK_REDO             available

_VERIFY_UNDO_QU  :  TRUE – verify consistency of undo quota statistics
OTA

_VERY_LARGE_OBJ  :  upper threshold level of object size for direct reads
ECT_THRESHOLD

_VERY_LARGE_PAR  :  very_large_partitioned_table
TITIONED_TABLE

_VIRTUAL_COLUMN  :  overload virtual columns expression
_OVERLOAD_ALLOW
ED

_VKRM_SCHEDULE_  :  VKRM scheduling interval
INTERVAL

_VKTM_ASSERT_TH  :  soft assert threshold VKTM timer drift
RESH

_WAIT_BREAKUP_T  :  Wait breakup threshold (in centiseconds)
HRESHOLD_CSECS

_WAIT_BREAKUP_T  :  Wait breakup time (in centiseconds)
IME_CSECS

_WAIT_FOR_SYNC   :  wait for sync on commit MUST BE ALWAYS TRUE
_WAIT_SAMPLES_M  :  Wait Samples maximum sections
AX_SECTIONS

_WAIT_SAMPLES_M  :  Wait Samples maximum time in seconds
AX_TIME_SECS

_WAIT_TRACKER_I  :  Wait Tracker number of seconds per interval
NTERVAL_SECS

_WAIT_TRACKER_N  :  Wait Tracker number of intervals
UM_INTERVALS

_WAIT_YIELD_HP_  :  Wait Yield – High Priority Mode
MODE

_WAIT_YIELD_MOD  :  Wait Yield – Mode
E

_WAIT_YIELD_SLE  :  Wait Yield – Sleep Frequency
EP_FREQ

_WAIT_YIELD_SLE  :  Wait Yield – Sleep Time (in milliseconds)
EP_TIME_MSECS

_WAIT_YIELD_YIE  :  Wait Yield – Yield Frequency
LD_FREQ

_WALK_INSERT_TH  :  maximum number of unusable blocks to walk across
RESHOLD             freelist

_WATCHPOINT_ON   :  is the watchpointing feature turned on?
_WCR_CONTROL     :  Oracle internal test WCR parameter used ONLY for
testing!

_WCR_GRV_CACHE_  :  Oracle internal: Set the replay cache size for
SIZE                WRR$_REPLAY_DATA.

_WCR_SEQ_CACHE_  :  Oracle internal: Set the replay cache size for
SIZE                WRR$_REPLAY_SEQ_DATA.

_WIDETAB_COMP_E  :  wide table compression enabled
NABLED

_WINDOWFUNC_OPT  :  settings for window function optimizations
IMIZATION_SETTI
NGS

_WITH_SUBQUERY   :  WITH subquery transformation
_WRITE_CLONES    :  write clones flag
_XA_INTERNAL_RE  :  number of internal retries for xa transactions
TRIES

_XDS_MAX_CHILD_  :  Maximum number of XDS user-specific child cursors
CURSORS

_XENGEM_DEVNAME  :  override default VM GEM device name used by skgvm
_XENGEM_DIAGMOD  :  set to OFF to disable VM GEM support and
E                   functionalities

_XENGEM_ENABLED  :  Enable OVM GEM support
_XPL_PEEKED_BIN  :  maximum bytes for logging peeked bind values for
DS_LOG_SIZE         V$SQL_PLAN (0 = OFF)

_XPL_TRACE       :  Explain Plan tracing parameter
_XSOLAPI_AUTO_M  :  OLAP API lower bound for auto materialization.
ATERIALIZATION_
BOUND

_XSOLAPI_AUTO_M  :  OLAP API behavior for auto materialization
ATERIALIZATION_
TYPE

_XSOLAPI_BUILD_  :  OLAP API output build info to trace file
TRACE

_XSOLAPI_DEBUG_  :  OLAP API debug output disposition
OUTPUT

_XSOLAPI_DENSIF  :  OLAP API cube densification
Y_CUBES

_XSOLAPI_DIMENS  :  OLAP API symmetric overfetch
ION_GROUP_CREAT
ION

_XSOLAPI_DML_TR  :  OLAP API output dml commands and expressions to trace
ACE                 file

_XSOLAPI_FETCH_  :  OLAP API fetch type
TYPE

_XSOLAPI_FIX_VP  :  OLAP API Enable vptr fixing logic in shared server mode
TRS

_XSOLAPI_GENERA  :  OLAP API generates WITH clause?
TE_WITH_CLAUSE

_XSOLAPI_HIERAR  :  OLAP API hierarchy value type
CHY_VALUE_TYPE

_XSOLAPI_LOAD_A  :  When to load OLAP API library at server process start
T_PROCESS_START

_XSOLAPI_MATERI  :  OLAP API min number of rows required to use rowcache in
ALIZATION_ROWCA     query materialization
CHE_MIN_ROWS_FO
R_USE

_XSOLAPI_MATERI  :  OLAP API Enable source materialization
ALIZE_SOURCES

_XSOLAPI_METADA  :  OLAP API metadata reader mode
TA_READER_MODE

_XSOLAPI_ODBO_M  :  OLAP API uses ODBO mode?
ODE

_XSOLAPI_OPTIMI  :  OLAP API optimizes suppressions?
ZE_SUPPRESSION

_XSOLAPI_OPT_AW  :  OLAP API enables AW position and count optimization?
_POSITION

_XSOLAPI_PRECOM  :  OLAP API precomputes subqueries?
PUTE_SUBQUERY

_XSOLAPI_REMOVE  :  OLAP API removes columns for materialization?
_COLUMNS_FOR_MA
TERIALIZATION

_XSOLAPI_SET_NL  :  OLAP API sets NLS?
S

_XSOLAPI_SHARE_  :  OLAP API share executors?
EXECUTORS

_XSOLAPI_SOURCE  :  OLAP API output Source definitions to trace file
_TRACE

_XSOLAPI_SQL_AL  :  OLAP API multi-join non-base hints
L_MULTI_JOIN_NO
N_BASE_HINTS

_XSOLAPI_SQL_AL  :  OLAP API non-base hints
L_NON_BASE_HINT
S

_XSOLAPI_SQL_AU  :  OLAP API enable automatic dimension hints
TO_DIMENSION_HI
NTS

_XSOLAPI_SQL_AU  :  OLAP API enable automatic measure hints
TO_MEASURE_HINT
S

_XSOLAPI_SQL_DI  :  OLAP API dimension hints
MENSION_HINTS

_XSOLAPI_SQL_EN  :  OLAP API enables AW join?
ABLE_AW_JOIN

_XSOLAPI_SQL_EN  :  OLAP API enables AW QDR merge?
ABLE_AW_QDR_MER
GE

_XSOLAPI_SQL_HI  :  OLAP API generic hints
NTS

_XSOLAPI_SQL_ME  :  OLAP API measure hints
ASURE_HINTS

_XSOLAPI_SQL_MI  :  OLAP API SQL MINUS threshold
NUS_THRESHOLD

_XSOLAPI_SQL_OP  :  OLAP API enable optimization
TIMIZE

_XSOLAPI_SQL_PR  :  OLAP API prepare statement cache size
EPARE_STMT_CACH
E_SIZE

_XSOLAPI_SQL_RE  :  OLAP API enable remove unused columns optimizations
MOVE_COLUMNS

_XSOLAPI_SQL_RE  :  OLAP API result set cache size
SULT_SET_CACHE_
SIZE

_XSOLAPI_SQL_SY  :  OLAP API enable symmetric predicate for dimension
MMETRIC_PREDICA     groups
TE

_XSOLAPI_SQL_TO  :  OLAP API top dimension hints
P_DIMENSION_HIN
TS

_XSOLAPI_SQL_TO  :  OLAP API top measure hints
P_MEASURE_HINTS

_XSOLAPI_SQL_US  :  OLAP API enable bind variables optimization
E_BIND_VARIABLE
S

_XSOLAPI_STRING  :  OLAP API stringifies order levels?
IFY_ORDER_LEVEL
S

_XSOLAPI_SUPPOR  :  OLAP API MTM mapping classes supported?
T_MTM

_XSOLAPI_SUPPRE  :  OLAP API suppression AW mask threshold
SSION_AW_MASK_T
HRESHOLD

_XSOLAPI_SUPPRE  :  OLAP API suppression chunk size
SSION_CHUNK_SIZ
E

_XSOLAPI_USE_MO  :  OLAP API uses models?
DELS

_XSOLAPI_USE_OL  :  OLAP API uses OLAP DML?
AP_DML

_XSOLAPI_USE_OL  :  OLAP API uses OLAP DML for rank?
AP_DML_FOR_RANK

_XS_CLEANUP_TAS  :  Triton Session Cleanup
K

_XS_DISPATCHER_  :  XS dispatcher only mode
ONLY

_XTBUFFER_SIZE   :  buffer size in KB needed for populate/query operation
_XTTS_ALLOW_PRE  :  allow cross platform for pre10 compatible tablespace
10

_XTTS_SET_PLATF  :  set cross platform info during file header read
ORM_INFO

_XT_COVERAGE     :  external tables code coverage parameter
_XT_TRACE        :  external tables trace parameter
_ZONEMAP_CONTRO  :  control different uses/algorithms related to zonemaps
L

_ZONEMAP_STALEN  :  control the staleness tracking of zonemaps via trigger
ESS_TRACKING

_ZONEMAP_USE_EN  :  enable the use of zonemaps for IO pruning
ABLED

__DATA_TRANSFER  :  Actual size of data transfer cache
_CACHE_SIZE

__DB_CACHE_SIZE  :  Actual size of DEFAULT buffer pool for standard block
size buffers

__DG_BROKER_SER  :  service names for broker use
VICE_NAMES

__JAVA_POOL_SIZ  :  Actual size in bytes of java pool
E

__LARGE_POOL_SI  :  Actual size in bytes of large pool
ZE

__ORACLE_BASE    :  ORACLE_BASE
__PGA_AGGREGATE  :  Current target size for the aggregate PGA memory
_TARGET             consumed

__SGA_TARGET     :  Actual size of SGA
__SHARED_IO_POO  :  Actual size of shared IO pool
L_SIZE

__SHARED_POOL_S  :  Actual size in bytes of shared pool
IZE

__STREAMS_POOL_  :  Actual size in bytes of streams pool
SIZE

2984 rows selected.

References: Oracle Documentation

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