Note
This view is available starting with V4.0.0. The view name was changed from V$PLAN_CACHE_PLAN_STAT to V$OB_PLAN_CACHE_PLAN_STAT.
Purpose
The V$OB_PLAN_CACHE_PLAN_STAT view displays the status of each cached object in the plan cache of the current OBServer node for the current tenant.
Notice
This view caches not only SQL plan objects but also PL objects, such as anonymous blocks, PL packages, and PL functions. Some fields are only valid for specific object types.
Columns
| Column | Type | Nullable | Description |
|---|---|---|---|
| TENANT_ID | NUMBER(38) | NO | The tenant ID. |
| SVR_IP | VARCHAR2(46) | NO | The IP address of the server. |
| SVR_PORT | NUMBER(38) | NO | The port number of the server. |
| PLAN_ID | NUMBER(38) | NO | The ID of the cache object. |
| SQL_ID | VARCHAR2(32) | NO | The SQL ID of the cache object. If the cache object is a PL object, this field is NULL. |
| TYPE | NUMBER(38) | NO | For SQL plan caching, this field indicates the plan type:
|
| IS_BIND_SENSITIVE | NUMBER(38) | NO | Indicates whether the plan requires the ACS to be opened. |
| IS_BIND_AWARE | NUMBER(38) | NO | Indicates whether the ACS is opened for the plan. |
| DB_ID | NUMBER(38) | NO | The ID of the database. |
| STATEMENT | CLOB | NO | For SQL plans, this field contains the parameterized SQL statement; for anonymous blocks, this field contains the parameterized anonymous block statement; for other objects, this field is invalid. |
| QUERY_SQL | CLOB | NO | For SQL plans, this field contains the original SQL statement queried when the plan was first loaded; for anonymous block objects, this field contains the parameterized anonymous block statement. |
| SPECIAL_PARAMS | VARCHAR2(4096) | NO | The values of parameters that cannot be parameterized. |
| PARAM_INFOS | CLOB | NO | The parameterization information. |
| SYS_VARS | VARCHAR2(4096) | NO | The values of system variables that affect the cache object. |
| PLAN_HASH | NUMBER(38) | NO | The hash value of the SQL plan. |
| FIRST_LOAD_TIME | TIMESTAMP(6) WITH LOCAL TIME ZONE | NO | The time when the plan was first loaded. |
| SCHEMA_VERSION | NUMBER(38) | NO | The schema version number. |
| LAST_ACTIVE_TIME | TIMESTAMP(6) WITH LOCAL TIME ZONE | NO | The time when the plan was last executed. |
| AVG_EXE_USEC | NUMBER(38) | NO | The average execution time, in microseconds. |
| SLOWEST_EXE_TIME | TIMESTAMP(6) WITH LOCAL TIME ZONE | NO | The timestamp of the slowest execution. |
| SLOWEST_EXE_USEC | NUMBER(38) | NO | The execution time of the slowest execution. |
| SLOW_COUNT | NUMBER(38) | NO | The number of times the SQL plan became a slow query. |
| HIT_COUNT | NUMBER(38) | NO | The number of times the plan was hit. |
| PLAN_SIZE | NUMBER(38) | NO | The memory size occupied by the cache object. |
| EXECUTIONS | NUMBER(38) | NO | The number of executions. |
| DISK_READS | NUMBER(38) | NO | The total number of physical reads across all executions. |
| DIRECT_WRITES | NUMBER(38) | NO | The total number of write operations executed. |
| BUFFERS_GETS | NUMBER(38) | NO | The total number of logical reads executed. |
| APPLICATION_WAIT_TIME | NUMBER(38) | NO | The total time consumed by all application events, in microseconds. |
| CONCURRENCY_WAIT_TIME | NUMBER(38) | NO | The total time consumed by all concurrency events, in microseconds. |
| USER_IO_WAIT_TIME | NUMBER(38) | NO | The total time consumed by all user I/O events, in microseconds. |
| ROWS_PROCESSED | NUMBER(38) | NO | The total number of rows processed by the query or the number of rows modified in the table. |
| ELAPSED_TIME | NUMBER(38) | NO | The total time consumed from when the request was received to when the execution was completed, in microseconds. |
| CPU_TIME | NUMBER(38) | NO | The total CPU time consumed by the execution, in microseconds. |
| LARGE_QUERYS | NUMBER(38) | NO | The number of queries identified as large queries. |
| DELAYED_LARGE_QUERYS | NUMBER(38) | NO | The number of queries identified as large queries and added to the large query queue. |
| DELAYED_PX_QUERYS | NUMBER(38) | NO | The number of parallel queries that are returned to the queue for retry. |
| OUTLINE_VERSION | NUMBER(38) | NO | The outline version number. |
| OUTLINE_ID | NUMBER(38) | NO | The ID of the outline. -1 indicates that the plan is not generated by using an outline. |
| OUTLINE_DATA | CLOB | NO | The outline information corresponding to the plan. |
| HINTS_INFO | CLOB | NO | The hint information of the SQL plan. |
| HINTS_ALL_WORKED | NUMBER(38) | NO | Indicates whether all hints in the SQL plan are effective. |
| ACS_SEL_INFO | CLOB | NO | The selectivity space corresponding to the current ACS plan. |
| TABLE_SCAN | NUMBER(38) | NO | Indicates whether the query is a primary key scan. |
| EVOLUTION | NUMBER(38) | NO | Indicates whether the execution plan is evolving. |
| EVO_EXECUTIONS | NUMBER(38) | NO | The number of evolutions. |
| EVO_CPU_TIME | NUMBER(38) | NO | The total CPU time consumed during the evolution, in microseconds. |
| TIMEOUT_COUNT | NUMBER(38) | NO | The number of timeouts. |
| PS_STMT_ID | NUMBER(38) | NO | The Prepare ID corresponding to the request:
|
| SESSID | NUMBER(38) | NO | The session ID of the cache object. For V4.2.x:
|
| TEMP_TABLES | CLOB | NO | The name of the temporary table in the SQL plan. If no temporary table exists, this field is empty. |
| IS_USE_JIT | NUMBER(38) | NO | Indicates whether the SQL plan enables expression compilation execution. |
| OBJECT_TYPE | CLOB | NO | The type of the cached object. Valid values:
|
| PL_SCHEMA_ID | NUMBER(38) | NO | For non-anonymous PL objects, this field is the schema ID of the cached object. For anonymous blocks, this field is the same as ps_stmt_id. For SQL plans, this field is meaningless. |
| IS_BATCHED_MULTI_STMT | NUMBER(38) | NO | Indicates whether the plan is optimized for Batched Multi Stmt. |
| RULE_NAME | VARCHAR2(256) | NO | The name of the rule. |
| PLAN_STATUS | VARCHAR2(8) | NO | Indicates whether the current plan is ACTIVE or INACTIVE. |
| ADAPTIVE_FEEDBACK_TIMES | NUMBER(38) | NO | The number of consecutive positive or negative feedbacks. |
| FIRST_GET_PLAN_TIME | NUMBER(38) | NO | The time when the query was hard parsed. |
| FIRST_EXE_USEC | NUMBER(38) | NO | The time when the query was executed for the first time. |
Sample query
The status of each cached object in the plan cache of the current tenant on the current OBServer node.
obclient [SYS]> SELECT * FROM SYS.V$OB_PLAN_CACHE_PLAN_STAT WHERE ROWNUM =1\G
The query result is as follows:
*************************** 1. row ***************************
TENANT_ID: 1004
SVR_IP: xx.xx.xx.xx
SVR_PORT: 28825
PLAN_ID: 386
SQL_ID: NULL
TYPE: 7
IS_BIND_SENSITIVE: 0
IS_BIND_AWARE: 0
DB_ID: 201001
STATEMENT: STANDARD
QUERY_SQL: NULL
SPECIAL_PARAMS: NULL
PARAM_INFOS: NULL
SYS_VARS: 45,45,2151677954,+08:00,2,4,1,0,0,3,1,0,1,10485760,1,0,YYYY-MM-DD HH24:MI:SS,YYYY-MM-DD HH24:MI:SS.FF,YYYY-MM-DD HH24:MI:SS.FF TZR TZD,BINARY,BINARY,AL32UTF8,AL16UTF16,BYTE,FALSE,1,100,64,200,0,13,NULL,1,1,1,1,1,0,0,0,1000,BLOOM_FILTER,RANGE,IN,1,17180000512,17180000512,1,45,0,
PLAN_HASH: 0
FIRST_LOAD_TIME: 19-MAR-25 02.17.15.500723 PM
SCHEMA_VERSION: 1742363530459848
LAST_ACTIVE_TIME: 18-APR-25 04.47.15.443479 PM
AVG_EXE_USEC: 0
SLOWEST_EXE_TIME: NULL
SLOWEST_EXE_USEC: 0
SLOW_COUNT: 0
HIT_COUNT: 1734
PLAN_SIZE: 15872
EXECUTIONS: 0
DISK_READS: 0
DIRECT_WRITES: 0
BUFFERS_GETS: 0
APPLICATION_WATI_TIME: 0
CONCURRENCY_WAIT_TIME: 0
USER_IO_WAIT_TIME: 0
ROWS_PROCESSED: 0
ELAPSED_TIME: 0
CPU_TIME: 0
LARGE_QUERYS: 0
DELAYED_LARGE_QUERYS: 0
DELAYED_PX_QUERYS: 0
OUTLINE_VERSION: 0
OUTLINE_ID: 0
OUTLINE_DATA: NULL
HINTS_INFO: NULL
HINTS_ALL_WORKED: 0
ACS_SEL_INFO: NULL
TABLE_SCAN: 0
EVOLUTION: 0
EVO_EXECUTIONS: 0
EVO_CPU_TIME: 0
TIMEOUT_COUNT: 0
PS_STMT_ID: -1
SESSID: 18446744073709551615
TEMP_TABLES: NULL
IS_USE_JIT: 0
OBJECT_TYPE: PACKAGE
PL_SCHEMA_ID: 310001
IS_BATCHED_MULTI_STMT: 0