Note
The view GV$SERVER_MEMSTORE was renamed to GV$OB_MEMSTORE in V4.0.0. In V4.0.0 and later, you must use the new view name GV$OB_MEMSTORE to query the view. Otherwise, an error will occur.
Purpose
This view displays the memory usage of MemTables on all servers of all tenants.
Columns
| Column | Type | Nullable? | Description |
|---|---|---|---|
| SVR_IP | VARCHAR2(46) | NO | The IP address of the server. |
| SVR_PORT | NUMBER(38) | NO | The port of the server. |
| TENANT_ID | NUMBER(38) | NO | The ID of the tenant. |
| ACTIVE_SPAN | NUMBER(38) | NO | The estimated memory usage of active MemTables (which may be overestimated), in bytes. |
| FREEZE_TRIGGER | NUMBER(38) | NO | The memory size that triggers the freezing of MemTables, in bytes. |
| FREEZE_CNT | NUMBER(38) | NO | The number of times MemTables have been frozen. |
| MEMSTORE_USED | NUMBER(38) | NO | The total memory usage of MemTables, in bytes. |
| MEMSTORE_LIMIT | NUMBER(38) | NO | The memory size limit of MemTables, in bytes. |
Sample query
The following example queries the memory usage of MemTables on all servers of the current tenant.
obclient [SYS]> SELECT * FROM SYS.GV$OB_MEMSTORE;
The query result is as follows:
+----------------+----------+-----------+-------------+----------------+------------+---------------+----------------+
| SVR_IP | SVR_PORT | TENANT_ID | ACTIVE_SPAN | FREEZE_TRIGGER | FREEZE_CNT | MEMSTORE_USED | MEMSTORE_LIMIT |
+----------------+----------+-----------+-------------+----------------+------------+---------------+----------------+
| 172.xx.xxx.xxx | 2882 | 1004 | 25165824 | 603982068 | 0 | 25165824 | 2684354550 |
+----------------+----------+-----------+-------------+----------------+------------+---------------+----------------+
1 row in set
