Note
This view was renamed from V$PLAN_CACHE_PLAN_STAT to V$OB_PLAN_CACHE_PLAN_STAT starting from 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 only valid for specific object types.
Columns
| Column | Type | Nullable | Description |
|---|---|---|---|
| TENANT_ID | bigint(20) | NO | The tenant ID. |
| 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 corresponding to the cached object. If the cached object is a PL object, this field is NULL. |
| TYPE | bigint(20) | NO | For SQL plan caching, this field indicates the type of the plan:
|
| 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 database ID. |
| STATEMENT | longtext | NO | For SQL plan caching, this field contains the parameterized SQL statement. For anonymous block caching, this field contains the parameterized anonymous block statement. This field is invalid for other types of cached objects. |
| QUERY_SQL | longtext | NO | For SQL plan caching, this field contains the original SQL statement queried when the plan was first loaded. For anonymous block caching, 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 configuration items 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. |
| LAST_ACTIVE_TIME | timestamp(6) | NO | The last execution time. |
| 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 becomes a slow query. |
| HIT_COUNT | bigint(20) | NO | The number of times the plan is hit. |
| PLAN_SIZE | bigint(20) | NO | The memory size occupied by the cached object. |
| EXECUTIONS | bigint(20) | NO | The number of executions. |
| DISK_READS | bigint(20) | NO | The number of physical reads for all executions. |
| DIRECT_WRITES | bigint(20) | NO | The number of physical writes for all executions. |
| BUFFER_GETS | bigint(20) | NO | The number of logical reads for 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 number of rows processed by all executions, including the number of rows selected or modified. |
| 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 total CPU time consumed by all executions, in microseconds. |
| LARGE_QUERYS | bigint(20) | NO | The number of times the query is identified as a large query. |
| DELAYED_LARGE_QUERYS | bigint(20) | NO | The number of times the query is identified as a large query and is added to the large query queue. |
| DELAYED_PX_QUERYS | bigint(20) | NO | The number of times a parallel query is returned to the queue for retry. |
| OUTLINE_VERSION | bigint(20) | NO | The version number of the outline. |
| OUTLINE_ID | bigint(20) | NO | The ID of the outline. -1 indicates that the plan is not generated by using a bound 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 evolutions, 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 names of temporary tables in the SQL plan. If there are no temporary tables, this field is empty. |
| IS_USE_JIT | tinyint(4) | NO | Indicates whether expression compilation is enabled for 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 blocks, 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 Multistmt. |
| RULE_NAME | varchar(256) | NO | The name of the rule. |
| PLAN_STATUS | varchar(8) | NO | The status of the plan, which is either 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 hard parse occurs. |
| FIRST_EXE_USEC | bigint(20) | NO | The time when the query is executed for the first time. |
| FORMAT_SQL_ID | varchar(32) | NO | The Format SQL ID of the current plan.
NoteThis field is available starting with V4.4.0. |
| CACHE_NODE_ID | bigint(20) | NO | The ID of the cache node to which the object belongs.
NoteThis field is available starting with V4.6.0. |
| PCV_ID | bigint(20) | NO | The ID of the plan cache value node to which the object belongs.
NoteThis field is available starting with V4.6.0. |
| PLAN_SET_ID | bigint(20) | NO | The ID of the plan set to which the object belongs.
NoteThis field is available starting with V4.6.0. |
| CREATE_REASON | varchar(4096) | NO | The reason why the plan is added.
NoteThis field is available starting with V4.6.0. |
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
CACHE_NODE_ID: 253
PCV_ID: 1
PLAN_SET_ID: 1
CREATE_REASON: Cache key not exists, cache_node_id: -1.
1 row in set