Purpose
The GV$OB_PLAN_CACHE_STAT view displays the overall status of each plan cache of the current tenant on all OBServer nodes.
Note
This view is introduced since OceanBase Database V4.0.0.
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. |
| SQL_NUM | bigint(20) | NO | The number of SQL statements in the plan cache. |
| MEM_USED | bigint(20) | NO | The size of memory that the plan cache occupies. |
| MEM_HOLD | bigint(20) | NO | The size of memory that the plan cache holds. |
| ACCESS_COUNT | bigint(20) | NO | The number of times that the query accesses the plan cache. |
| HIT_COUNT | bigint(20) | NO | The number of plan cache hits. |
| HIT_RATE | bigint(20) | NO | The hit rate of the plan cache. |
| PLAN_NUM | bigint(20) | NO | The number of plans. |
| MEM_LIMIT | bigint(20) | NO | The maximum size of memory that the plan cache can occupy. |
| HASH_BUCKET | bigint(20) | NO | The number of buckets in the hash map of the plan cache. |
| STMTKEY_NUM | bigint(20) | NO | The number of stmt_keys in the plan cache. |