Dynamic Performance (V$) Views, 171 of 238

V$SESSION

This view lists session information for each current session.

Column	Datatype	Description
`SADDR`	`RAW(4 \| 8)`	Session address
`SID`	`NUMBER`	Session identifier
`SERIAL#`	`NUMBER`	Session serial number. Used to identify uniquely a session's objects. Guarantees that session-level commands are applied to the correct session objects if the session ends and another session begins with the same session ID.
`AUDSID`	`NUMBER`	Auditing session ID
`PADDR`	`RAW(4 \| 8)`	Address of the process that owns this session
`USER#`	`NUMBER`	Oracle user identifier
`USERNAME`	`VARCHAR2(30)`	Oracle username
`COMMAND`	`NUMBER`	Command in progress (last statement parsed); for a list of values, see Table 3-3. These values also appear in the `AUDIT_ACTIONS` table.
`OWNERID`	`NUMBER`	The column contents are invalid if the value is `2147483644`. Otherwise, this column contains the identifier of the user who owns the migratable session. For operations using Parallel Slaves, interpret this value as a 4-byte value. The low-order 2 bytes of which represent the session number, and the high-order bytes the instance ID of the query coordinator.
`TADDR`	`VARCHAR2(8)`	Address of transaction state object
`LOCKWAIT`	`VARCHAR2(8)`	Address of lock waiting for; NULL if none
`STATUS`	`VARCHAR2(8)`	Status of the session: `ACTIVE` (currently executing SQL), `INACTIVE`, `KILLED` (marked to be killed), `CACHED` (temporarily cached for use by Oracle*XA), `SNIPED` (session inactive, waiting on the client)
`SERVER`	`VARCHAR2(9)`	Server type (`DEDICATED`\| `SHARED`\| `PSEUDO`\| `NONE`)
`SCHEMA#`	`NUMBER`	Schema user identifier
`SCHEMANAME`	`VARCHAR2(30)`	Schema user name
`OSUSER`	`VARCHAR2(30)`	Operating system client user name
`PROCESS`	`VARCHAR2(9)`	Operating system client process ID
`MACHINE`	`VARCHAR2(64)`	Operating system machine name
`TERMINAL`	`VARCHAR2(30)`	Operating system terminal name
`PROGRAM`	`VARCHAR2(48)`	Operating system program name
`TYPE`	`VARCHAR2(10)`	Session type
`SQL_ADDRESS`	`RAW(4)`	Used with `SQL_HASH_VALUE` to identify the SQL statement that is currently being executed
`SQL_HASH_VALUE`	`NUMBER`	Used with `SQL_ADDRESS` to identify the SQL statement that is currently being executed
`PREV_SQL_ADDR`	`RAW(4)`	Used with `PREV_HASH_VALUE` to identify the last SQL statement executed
`PREV_HASH_VALUE`	`NUMBER`	Used with `SQL_HASH_VALUE` to identify the last SQL statement executed
`MODULE`	`VARCHAR2(48)`	Contains the name of the currently executing module as set by calling the `DBMS_APPLICATION_INFO.SET_MODULE` procedure
`MODULE_HASH`	`NUMBER`	The hash value of the above `MODULE`
`ACTION`	`VARCHAR2(32)`	Contains the name of the currently executing action as set by calling the `DBMS_APPLICATION_INFO.SET_ACTION` procedure
`ACTION_HASH`	`NUMBER`	The hash value of the above action name
`CLIENT_INFO`	`VARCHAR2(64)`	Information set by the `DBMS_APPLICATION_INFO.SET_CLIENT_INFO` procedure
`FIXED_TABLE_SEQUENCE`	`NUMBER`	This contains a number that increases every time the session completes a call to the database and there has been an intervening select from a dynamic performance table. This column can be used by performance monitors to monitor statistics in the database. Each time the performance monitor looks at the database, it only needs to look at sessions that are currently active or have a higher value in this column than the highest value that the performance monitor saw the last time. All the other sessions have been idle since the last time the performance monitor looked at the database.
`ROW_WAIT_OBJ#`	`NUMBER`	Object ID for the table containing the ROWID specified in `ROW_WAIT_ROW#`
`ROW_WAIT_FILE#`	`NUMBER`	Identifier for the datafile containing the ROWID specified in `ROW_WAIT_ROW#`. This column is valid only if the session is currently waiting for another transaction to commit and the value of `ROW_WAIT_OBJ#` is not `-1`.
`ROW_WAIT_BLOCK#`	`NUMBER`	Identifier for the block containing the ROWID specified in `ROW_WAIT_ROW#`. This column is valid only if the session is currently waiting for another transaction to commit and the value of `ROW_WAIT_OBJ#` is not `-1`.
`ROW_WAIT_ROW#`	`NUMBER`	The current ROWID being locked. This column is valid only if the session is currently waiting for another transaction to commit and the value of `ROW_WAIT_OBJ#` is not `-1`.
`LOGON_TIME`	`DATE`	Time of logon
`LAST_CALL_ET`	`NUMBER`	The last call
`PDML_ENABLED`	`VARCHAR2(3)`	This column has been replaced by column `PDML_STATUS`
`FAILOVER_TYPE`	`VARCHAR2(13)`	Indicates whether and to what extent transparent application failover (TAF) is enabled for the session: `NONE` - failover is disabled for this session `SESSION` - the client is able to fail over its session following a disconnect `SELECT` - the client is able to fail over queries in progress as well See Also: Oracle9i Database Concepts for more information on TAF Oracle9i Net Services Administrator's Guide for information on configuring TAF
`FAILOVER_METHOD`	`VARCHAR2(10)`	Indicates the transparent application failover method for the session: `NONE` - failover is disabled for this session `BASIC` - the client itself reconnects following a disconnect `PRECONNECT` - the backup instance can support all connections from every instance for which it is backup
`FAILED_OVER`	`VARCHAR2(3)`	Indicates (`YES`\|`NO`) whether the session is running in failover mode and failover has occurred
`RESOURCE_CONSUMER_GROUP`	`VARCHAR2(32)`	Name of the session's current resource consumer group
`PDML_STATUS`	`VARCHAR2(8)`	If `ENABLED`, the session is in a PARALLEL DML enabled mode. If `DISABLED`, PARALLEL DML enabled mode is not supported for the session. If FORCED, the session has been altered to force PARALLEL DML.
`PDDL_STATUS`	`VARCHAR2(8)`	If `ENABLED`, the session is in a PARALLEL DDL enabled mode. If `DISABLED`, PARALLEL DDL enabled mode is not supported for the session. If `FORCED`, the session has been altered to force PARALLEL DDL.
`PQ_STATUS`	`VARCHAR2(8)`	If `ENABLED`, the session is in a PARALLEL QUERY enabled mode. If `DISABLED`, PARALLEL QUERY enabled mode is not supported for the session. If `FORCED`, the session has been altered to force PARALLEL QUERY.
`CURRENT_QUEUE_DURATION`	`NUMBER`	If queued (`1`), the current amount of time the session has been queued. If not currently queued, value is `0`.
`CLIENT_IDENTIFIER`	`VARCHAR2(64)`

Table 3-3 COMMAND Column of V$SESSION and Corresponding Commands

Number	Command	Number	Command
`1`	`CREATE TABLE`	`2`	`INSERT`
`3`	`SELECT`	`4`	`CREATE CLUSTER`
`5`	`ALTER CLUSTER`	`6`	`UPDATE`
`7`	`DELETE`	`8`	`DROP CLUSTER`
`9`	`CREATE INDEX`	`10`	`DROP INDEX`
`11`	`ALTER INDEX`	`12`	`DROP TABLE`
`13`	`CREATE SEQUENCE`	`14`	`ALTER SEQUENCE`
`15`	`ALTER TABLE`	`16`	`DROP SEQUENCE`
`17`	`GRANT OBJECT`	`18`	`REVOKE OBJECT`
`19`	`CREATE SYNONYM`	`20`	`DROP SYNONYM`
`21`	`CREATE VIEW`	`22`	`DROP VIEW`
`23`	`VALIDATE INDEX`	`24`	`CREATE PROCEDURE`
`25`	`ALTER PROCEDURE`	`26`	`LOCK`
`27`	`NO-OP`	`28`	`RENAME`
`29`	`COMMENT`	`30`	`AUDIT OBJECT`
`31`	`NOAUDIT OBJECT`	`32`	`CREATE DATABASE LINK`
`33`	`DROP DATABASE LINK`	`34`	`CREATE DATABASE`
`35`	`ALTER DATABASE`	`36`	`CREATE ROLLBACK SEG`
`37`	`ALTER ROLLBACK SEG`	`38`	`DROP ROLLBACK SEG`
`39`	`CREATE TABLESPACE`	`40`	`ALTER TABLESPACE`
`41`	`DROP TABLESPACE`	`42`	`ALTER SESSION`
`43`	`ALTER USER`	`44`	`COMMIT`
`45`	`ROLLBACK`	`46`	`SAVEPOINT`
`47`	`PL/SQL EXECUTE`	`48`	`SET TRANSACTION`
`49`	`ALTER SYSTEM`	`50`	`EXPLAIN`
`51`	`CREATE USER`	`52`	`CREATE ROLE`
`53`	`DROP USER`	`54`	`DROP ROLE`
`55`	`SET ROLE`	`56`	`CREATE SCHEMA`
`57`	`CREATE CONTROL FILE`	`59`	`CREATE TRIGGER`
`60`	`ALTER TRIGGER`	`61`	`DROP TRIGGER`
`62`	`ANALYZE TABLE`	`63`	`ANALYZE INDEX`
`64`	`ANALYZE CLUSTER`	`65`	`CREATE PROFILE`
`66`	`DROP PROFILE`	`67`	`ALTER PROFILE`
`68`	`DROP PROCEDURE`	`70`	`ALTER RESOURCE COST`
`71`	`CREATE SNAPSHOT LOG`	`72`	`ALTER SNAPSHOT LOG`
`73`	`DROP SNAPSHOT LOG`	`74`	`CREATE SNAPSHOT`
`75`	`ALTER SNAPSHOT`	`76`	`DROP SNAPSHOT`
`77`	`CREATE TYPE`	`78`	`DROP TYPE`
`79`	`ALTER ROLE`	`80`	`ALTER TYPE`
`81`	`CREATE TYPE BODY`	`82`	`ALTER TYPE BODY`
`83`	`DROP TYPE BODY`	`84`	`DROP LIBRARY`
`85`	`TRUNCATE TABLE`	`86`	`TRUNCATE CLUSTER`
`91`	`CREATE FUNCTION`	`92`	`ALTER FUNCTION`
`93`	`DROP FUNCTION`	`94`	`CREATE PACKAGE`
`95`	`ALTER PACKAGE`	`96`	`DROP PACKAGE`
`97`	`CREATE PACKAGE BODY`	`98`	`ALTER PACKAGE BODY`
`99`	`DROP PACKAGE BODY`	`100`	`LOGON`
`101`	`LOGOFF`	`102`	`LOGOFF BY CLEANUP`
`103`	`SESSION REC`	`104`	`SYSTEM AUDIT`
`105`	`SYSTEM NOAUDIT`	`106`	`AUDIT DEFAULT`
`107`	`NOAUDIT DEFAULT`	`108`	`SYSTEM GRANT`
`109`	`SYSTEM REVOKE`	`110`	`CREATE PUBLIC SYNONYM`
`111`	`DROP PUBLIC SYNONYM`	`112`	`CREATE PUBLIC DATABASE LINK`
`113`	`DROP PUBLIC DATABASE LINK`	`114`	`GRANT ROLE`
`115`	`REVOKE ROLE`	`116`	`EXECUTE PROCEDURE`
`117`	`USER COMMENT`	`118`	`ENABLE TRIGGER`
`119`	`DISABLE TRIGGER`	`120`	`ENABLE ALL TRIGGERS`
`121`	`DISABLE ALL TRIGGERS`	`122`	`NETWORK ERROR`
`123`	`EXECUTE TYPE`	`157`	`CREATE DIRECTORY`
`158`	`DROP DIRECTORY`	`159`	`CREATE LIBRARY`
`160`	`CREATE JAVA`	`161`	`ALTER JAVA`
`162`	`DROP JAVA`	`163`	`CREATE OPERATOR`
`164`	`CREATE INDEXTYPE`	`165`	`DROP INDEXTYPE`
`167`	`DROP OPERATOR`	`168`	`ASSOCIATE STATISTICS`
`169`	`DISASSOCIATE STATISTICS`	`170`	`CALL METHOD`
`171`	`CREATE SUMMARY`	`172`	`ALTER SUMMARY`
`173`	`DROP SUMMARY`	`174`	`CREATE DIMENSION`
`175`	`ALTER DIMENSION`	`176`	`DROP DIMENSION`
`177`	`CREATE CONTEXT`	`178`	`DROP CONTEXT`
`179`	`ALTER OUTLINE`	`180`	`CREATE OUTLINE`
`181`	`DROP OUTLINE`	`182`	`UPDATE INDEXES`
`183`	`ALTER OPERATOR`