Purpose
The V$OB_PLAN_CACHE_STAT view displays the overall status of each plan cache on the current OBServer node of the current tenant.
Note
This view is introduced since OceanBase Database V4.0.0.
Columns
Column |
Type |
Nullable? |
Description |
|---|---|---|---|
| SVR_IP | VARCHAR2(46) | NO | The IP address of the OBServer node. |
| SVR_PORT | NUMBER(38) | NO | The port number of the OBServer node. |
| SQL_NUM | NUMBER(38) | NO | The number of SQL statements in the plan cache. |
| MEM_USED | NUMBER(38) | NO | The size of memory that the plan cache occupies. |
| MEM_HOLD | NUMBER(38) | NO | The size of memory that the plan cache holds. |
| ACCESS_COUNT | NUMBER(38) | NO | The number of times that the query accesses the plan cache. |
| HIT_COUNT | NUMBER(38) | NO | The number of plan cache hits. |
| HIT_RATE | NUMBER(38) | NO | The hit rate of the plan cache. |
| PLAN_NUM | NUMBER(38) | NO | The number of plans. |
| MEM_LIMIT | NUMBER(38) | NO | The maximum size of memory that the plan cache can occupy. |
| HASH_BUCKET | NUMBER(38) | NO | The number of buckets in the hash map of the plan cache. |
| STMTKEY_NUM | NUMBER(38) | NO | The number of stmt_keys in the plan cache. |