Note
This view is available starting with V4.0.0.
Purpose
This view monitors the overall status of the PS cache for the current tenant across all OBServer nodes, including hit rate, memory usage, and the number of cached items.
Columns
Column |
Type |
Nullable |
Description |
|---|---|---|---|
| SVR_IP | VARCHAR2(46) | NO | The IP address of the server. |
| SVR_PORT | NUMBER(38) | NO | The port number of the server. |
| STMT_COUNT | NUMBER(38) | NO | The number of statements cached in the PS cache. |
| HIT_COUNT | NUMBER(38) | NO | The total number of hits in the PS cache. |
| ACCESS_COUNT | NUMBER(38) | NO | The total number of accesses to the PS cache. |
| MEM_HOLD | NUMBER(38) | NO | The amount of memory used by the PS cache. |
Sample query
In the user tenant, view the overall status of the PS cache for the tenant across all nodes.
obclient [SYS]> SELECT * FROM SYS.GV$OB_PS_STAT;
The query result is as follows:
+-----------+----------------+----------+------------+-----------+--------------+----------+
| TENANT_ID | SVR_IP | SVR_PORT | STMT_COUNT | HIT_COUNT | ACCESS_COUNT | MEM_HOLD |
+-----------+----------------+----------+------------+-----------+--------------+----------+
| 1004 | 11.xxx.xxx.xxx | 28825 | 1 | 0 | 1 | 16384 |
+-----------+----------------+----------+------------+-----------+--------------+----------+
1 row in set