Note
The GV$MEMSTORE_INFO view has been renamed as GV$OB_MEMSTORE_INFO since OceanBase Database V4.0.0. If you query the GV$MEMSTORE_INFO view in OceanBase Database V4.0.0 or later, an error is returned.
Purpose
The GV$OB_MEMSTORE_INFO view displays the details about MemTables of all partitions of all tenants on all OBServer nodes.
Columns
Column |
Type |
Nullable? |
Description |
|---|---|---|---|
| SVR_IP | varchar(46) | NO | The IP address of the OBServer node. |
| SVR_PORT | bigint(20) | NO | The port number of the OBServer node. |
| TENANT_ID | bigint(20) | NO | The ID of the tenant. |
| LS_ID | bigint(20) | NO | The ID of the log stream. |
| TABLE_ID | bigint(20) | NO | The ID of the tablet. |
| IS_ACTIVE | varchar(3) | NO | Indicates whether the current MemTable is active. |
| START_SCN | bigint(20) unsigned | NO | The system change number (SCN) at which the storage started. |
| END_SCN | bigint(20) unsigned | NO | The SCN at which the storage ended. |
| FREEZE_TS | bigint(20) | NO | The freeze timestamp. |
Sample query
Query details about MemTables of all partitions of a tenant with the ID of 1002 on all OBServer nodes.
obclient [oceanbase]> SELECT * FROM oceanbase.GV$OB_MEMSTORE_INFO WHERE TENANT_ID=1002;
The query result is as follows:
+----------------+----------+-----------+-------+-----------+-----------+---------------------+---------------------+-----------+
| SVR_IP | SVR_PORT | TENANT_ID | LS_ID | TABLET_ID | IS_ACTIVE | START_SCN | END_SCN | FREEZE_TS |
+----------------+----------+-----------+-------+-----------+-----------+---------------------+---------------------+-----------+
| 172.xx.xxx.xxx | 2882 | 1002 | 1 | 378 | YES | 1714068002572249530 | 4611686018427387903 | 0 |
| 172.xx.xxx.xxx | 2882 | 1002 | 1 | 1 | YES | 1714068112628329951 | 4611686018427387903 | 0 |
| 172.xx.xxx.xxx | 2882 | 1002 | 1 | 377 | YES | 1714068002572249530 | 4611686018427387903 | 0 |
| 172.xx.xxx.xxx | 2882 | 1002 | 1 | 323 | YES | 1714068002572249530 | 4611686018427387903 | 0 |
| 172.xx.xxx.xxx | 2882 | 1002 | 1 | 331 | YES | 1714068002572249530 | 4611686018427387903 | 0 |
| 172.xx.xxx.xxx | 2882 | 1002 | 1 | 121 | YES | 1714068114066199993 | 4611686018427387903 | 0 |
| 172.xx.xxx.xxx | 2882 | 1002 | 1 | 431 | YES | 1714031525703603309 | 4611686018427387903 | 0 |
| 172.xx.xxx.xxx | 2882 | 1002 | 1 | 373 | YES | 1 | 4611686018427387903 | 0 |
+----------------+----------+-----------+-------+-----------+-----------+---------------------+---------------------+-----------+
8 rows in set