Note
This view was renamed from V$PLAN_CACHE_PLAN_STAT to V$OB_PLAN_CACHE_PLAN_STAT starting with V4.0.0.
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 all tenants.
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 valid only for specific object types.
Columns
| Column | Type | Nullable | Description |
|---|---|---|---|
| TENANT_ID | bigint(20) | NO | The ID of the tenant. |
| SVR_IP | varchar(46) | NO | The IP address of the server. |
| SVR_PORT | bigint(20) | NO | The port number of the server. |
| PLAN_ID | bigint(20) | NO | The ID of the cached object. |
| SQL_ID | varchar(32) | NO | The SQL ID of the cached object. If the cached object is a PL object, this field is NULL. |
| TYPE | bigint(20) | NO | The type of the cached object. For SQL plans, the value indicates the plan type:
|
| IS_BIND_SENSITIVE | bigint(20) | NO | Indicates whether the plan requires the ACS feature to be enabled. |
| IS_BIND_AWARE | bigint(20) | NO | Indicates whether the ACS feature is enabled for the plan. |
| DB_ID | bigint(20) unsigned | NO | The ID of the database. |
| STATEMENT | longtext | NO | For SQL plans, this field contains the parameterized SQL statement. For anonymous blocks, this field contains the parameterized anonymous block statement. This field is invalid for other objects. |
| QUERY_SQL | longtext | NO | For SQL plans, this field contains the original SQL statement queried when the plan was first loaded. For anonymous blocks, this field contains the parameterized anonymous block statement. |
| SPECIAL_PARAMS | varchar(4096) | NO | The values of parameters that cannot be parameterized. |
| PARAM_INFOS | longtext | NO | The parameterization information. |
| SYS_VARS | varchar(4096) | NO | The values of system variables that affect the plan. |
| CONFIGS | varchar(4096) | NO | The information about the configurations that affect the execution plan. |
| PLAN_HASH | bigint(20) unsigned | NO | The hash value of the SQL plan. |
| FIRST_LOAD_TIME | timestamp(6) | NO | The time when the plan was first loaded. |
| SCHEMA_VERSION | bigint(20) | NO | The schema version number. |
| LAST_ACTIVE_TIME | timestamp(6) | NO | The time when the plan was last executed. |
| AVG_EXE_USEC | bigint(20) | NO | The average execution time, in microseconds. |
| SLOWEST_EXE_TIME | timestamp(6) | NO | The timestamp of the slowest execution. |
| SLOWEST_EXE_USEC | bigint(20) | NO | The duration of the slowest execution. |
| SLOW_COUNT | bigint(20) | NO | The number of times the current SQL plan has been identified as a slow query. |
| HIT_COUNT | bigint(20) | NO | The number of times the plan has been hit. |
| PLAN_SIZE | bigint(20) | NO | The size of the memory occupied by the cached object. |
| EXECUTIONS | bigint(20) | NO | The number of executions. |
| DISK_READS | bigint(20) | NO | The number of physical reads across all executions. |
| DIRECT_WRITES | bigint(20) | NO | The number of physical writes across all executions. |
| BUFFER_GETS | bigint(20) | NO | The number of logical reads across all executions. |
| APPLICATION_WAIT_TIME | bigint(20) unsigned | NO | The total time of all Application events, in microseconds. |
| CONCURRENCY_WAIT_TIME | bigint(20) unsigned | NO | The total time of all Concurrency events, in microseconds. |
| USER_IO_WAIT_TIME | bigint(20) unsigned | NO | The total time of all user_io events, in microseconds. |
| ROWS_PROCESSED | bigint(20) | NO | The time of all Schedule events. |
| ELAPSED_TIME | bigint(20) unsigned | NO | The time consumed from receiving the request to the end of execution, in microseconds. |
| CPU_TIME | bigint(20) unsigned | NO | The CPU time consumed by all executions, in microseconds. |
| LARGE_QUERYS | bigint(20) | NO | The number of times the query has been identified as a large query. |
| DELAYED_LARGE_QUERYS | bigint(20) | NO | The number of times the query has been identified as a large query and added to the large query queue. |
| DELAYED_PX_QUERYS | bigint(20) | NO | The number of times a parallel query has been returned to the queue for retry. |
| OUTLINE_VERSION | bigint(20) | NO | The outline version. |
| OUTLINE_ID | bigint(20) | NO | The ID of the outline. -1 indicates that the plan was not generated by using an outline. |
| OUTLINE_DATA | longtext | NO | The outline information corresponding to the plan. |
| ACS_SEL_INFO | longtext | NO | The selection rate space corresponding to the current ACS plan. |
| TABLE_SCAN | tinyint(4) | NO | Indicates whether the query is a primary key scan. |
| EVOLUTION | tinyint(4) | NO | Indicates whether the execution plan is evolving. |
| EVO_EXECUTIONS | bigint(20) | NO | The number of evolutions. |
| EVO_CPU_TIME | bigint(20) unsigned | NO | The total CPU time consumed during the execution of the evolution, in microseconds. |
| TIMEOUT_COUNT | bigint(20) | NO | The number of timeouts. |
| PS_STMT_ID | bigint(20) | NO | The Prepare ID corresponding to the request.
|
| SESSID | bigint(20) unsigned | NO | The session ID of the cache object. For V4.3.x:
|
| TEMP_TABLES | longtext | NO | The name of the temporary table in the SQL plan. If no temporary table exists, this field is empty. |
| IS_USE_JIT | tinyint(4) | NO | Indicates whether the expression compilation is enabled in the SQL plan. |
| OBJECT_TYPE | longtext | NO | The type of the cache object.
|
| HINTS_INFO | longtext | NO | The hint information of the SQL plan. |
| HINTS_ALL_WORKED | tinyint(4) | NO | Indicates whether all hints in the SQL plan are effective. |
| PL_SCHEMA_ID | bigint(20) unsigned | NO | For non-anonymous PL objects, this field is the schema ID of the cache object. For anonymous blocks, this field is the same as ps_stmt_id. For SQL plans, this field is meaningless. |
| IS_BATCHED_MULTI_STMT | tinyint(4) | NO | Indicates whether the plan is optimized for batched multistatement execution. |
| RULE_NAME | varchar(256) | NO | The name of the rule. |
| PLAN_STATUS | varchar(8) | NO | Indicates whether the current plan is ACTIVE or INACTIVE. |
| ADAPTIVE_FEEDBACK_TIMES | bigint(20) | NO | The number of consecutive positive or negative feedbacks. |
| FIRST_GET_PLAN_TIME | bigint(20) | NO | The time when the query was hard parsed. |
| FIRST_EXE_USEC | bigint(20) | NO | The time when the query was executed for the first time. |
Sample query
Query the status of each cached object in the plan cache of the current OBServer node for all tenants.
obclient [oceanbase]> SELECT * FROM oceanbase.V$OB_PLAN_CACHE_PLAN_STAT LIMIT 1\G
The query result is as follows:
*************************** 1. row ***************************
TENANT_ID: 1
SVR_IP: 172.xx.xxx.xxx
SVR_PORT: 2882
PLAN_ID: 1061
SQL_ID: 17605A1DA6B6A2150E9FBCA5D4C7653A
TYPE: 1
IS_BIND_SENSITIVE: 0
IS_BIND_AWARE: 0
DB_ID: 201001
STATEMENT: SELECT row_id, column_name, column_value FROM __all_core_table WHERE table_name = ? ORDER BY row_id, column_name
QUERY_SQL: SELECT row_id, column_name, column_value FROM __all_core_table WHERE table_name = '__all_global_stat' ORDER BY row_id, column_name
SPECIAL_PARAMS:
PARAM_INFOS: {1,0,0,-1,22}
SYS_VARS: 45,45,4194304,+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,1,17180000512,17180000512,1,0,0,45,0,0,2,
CONFIGS: 4,1,1,0,1,1,1,0,30,17180131328,1,0,0,1,3,0,10,1001,101,0,1,1,
PLAN_HASH: 12254811659671915614
FIRST_LOAD_TIME: 2025-07-08 14:00:15.851124
SCHEMA_VERSION: 1751954415655768
LAST_ACTIVE_TIME: 2025-07-17 10:30:21.869625
AVG_EXE_USEC: 168
SLOWEST_EXE_TIME: 2025-07-08 14:00:32.642381
SLOWEST_EXE_USEC: 12329
SLOW_COUNT: 0
HIT_COUNT: 3403
PLAN_SIZE: 65536
EXECUTIONS: 3404
DISK_READS: 0
DIRECT_WRITES: 0
BUFFER_GETS: 3
APPLICATION_WAIT_TIME: 0
CONCURRENCY_WAIT_TIME: 0
USER_IO_WAIT_TIME: 0
ROWS_PROCESSED: 3404
ELAPSED_TIME: 573119
CPU_TIME: 154240
LARGE_QUERYS: 0
DELAYED_LARGE_QUERYS: 0
DELAYED_PX_QUERYS: 0
OUTLINE_VERSION: 0
OUTLINE_ID: -1
OUTLINE_DATA: /*+BEGIN_OUTLINE_DATA INDEX(@"SEL$1" "oceanbase"."__all_core_table"@"SEL$1" "primary") OPTIMIZER_FEATURES_ENABLE('4.4.0.0') END_OUTLINE_DATA*/
ACS_SEL_INFO:
TABLE_SCAN: 0
EVOLUTION: 0
EVO_EXECUTIONS: 0
EVO_CPU_TIME: 0
TIMEOUT_COUNT: 0
PS_STMT_ID: -1
SESSID: 0
TEMP_TABLES:
IS_USE_JIT: 0
OBJECT_TYPE: SQL_PLAN
HINTS_INFO: /*+ */
HINTS_ALL_WORKED: 1
PL_SCHEMA_ID: 0
IS_BATCHED_MULTI_STMT: 0
RULE_NAME:
PLAN_STATUS: ACTIVE
ADAPTIVE_FEEDBACK_TIMES: 0
FIRST_GET_PLAN_TIME: NULL
FIRST_EXE_USEC: NULL
FORMAT_SQL_ID: 783ADC119BC0EC8B30F4753F6C568CEF
1 row in set