Oracle8i Reference
Release 2 (8.1.6)

Part Number A76961-01

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Dynamic Performance (V$) Views, 156 of 179


V$SQLAREA

This view lists statistics on shared SQL area and contains one row per SQL string. It provides statistics on SQL statements that are in memory, parsed, and ready for execution.

Column  Datatype  Description 

SQL_TEXT 

VARCHAR2(1000) 

The first eighty characters of the SQL text for the current cursor 

SHARABLE_MEM 

NUMBER 

Amount of shared memory used by a cursor. If multiple child cursors exist, the sum of all shared memory used by all child cursors. 

PERSISTENT_MEM 

NUMBER 

Fixed amount of memory used for the lifetime of an open cursor. If multiple child cursors exist, the fixed sum of memory used for the lifetime of all the child cursors. 

RUNTIME_MEM 

NUMBER 

Fixed amount of memory required during execution of a cursor. If multiple child cursors exist, the fixed sum of all memory required during execution of all the child cursors. 

SORTS 

NUMBER 

The sum of the number of sorts that was done for all the children 

VERSION_COUNT 

NUMBER 

The number of children that are present in the cache under this parent 

LOADED_VERSIONS 

NUMBER 

The number of children that are present in the cache AND have their context heap (KGL heap 6) loaded 

OPEN_VERSIONS 

NUMBER 

The number of child cursors that are currently open under this current parent 

USERS_OPENING 

NUMBER 

The number of users that have any of the child cursors open 

EXECUTIONS 

NUMBER 

The total number of executions, totalled over all the children  

USERS_EXECUTING 

NUMBER 

The total number of users executing the statement over all children 

LOADS 

NUMBER 

The number of times the object was loaded or reloaded 

FIRST_LOAD_TIME 

VARCHAR2(19) 

The time stamp of the parent creation time 

INVALIDATIONS 

NUMBER 

The total number of invalidations over all the children 

PARSE_CALLS 

NUMBER 

The sum of all parse calls to all the child cursors under this parent 

DISK_READS 

NUMBER 

The sum of the number of disk reads over all child cursors 

BUFFER_GETS 

NUMBER 

The sum of buffer gets over all child cursors 

ROWS_PROCESSED 

NUMBER 

The total number of rows processed on behalf of this SQL statement 

COMMAND_TYPE 

NUMBER 

The Oracle command type definition 

OPTIMIZER_MODE 

VARCHAR2(10) 

Mode under which the SQL statement is executed 

PARSING_USER_ID 

NUMBER 

The user ID of the user that has parsed the very first cursor under this parent 

PARSING_SCHEMA_ID 

NUMBER 

The schema ID that was used to parse this child cursor 

KEPT_VERSIONS 

NUMBER 

The number of child cursors that have been marked to be kept using the DBMS_SHARED_POOL package 

ADDRESS 

RAW(4) 

The address of the handle to the parent for this cursor 

HASH_VALUE 

NUMBER 

The hash value of the parent statement in the library cache 

MODULE 

VARCHAR2(64) 

Contains the name of the module that was executing at the time that the SQL statement was first parsed as set by calling DBMS_APPLICATION_INFO.SET_MODULE 

MODULE_HASH 

NUMBER 

The hash value of the module that is named in the MODULE column 

ACTION 

VARCHAR2(64) 

Contains the name of the action that was executing at the time that the SQL statement was first parsed as set by calling DBMS_APPLICATION_INFO.SET_ACTION 

ACTION_HASH 

NUMBER 

The hash value of the action that is named in the ACTION column 

SERIALIZABLE_ABORTS 

NUMBER 

The number of times the transaction fails to serialize, producing ORA-8177 errors, totalled over all the children 


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