Note
This view is available starting with V4.0.0.
Overview
Displays the information about the MemTable and SSTable under each partition of the current tenant on all OBServer nodes.
Columns
Field Name |
Type |
Whether can be NULL |
Description |
|---|---|---|---|
| SVR_IP | varchar(46) | NO | Server IP Address |
| SVR_PORT | bigint(20) | NO | Server Port Number |
| TABLE_TYPE | varchar(20) | NO | Table type |
| TENANT_ID | bigint(20) | NO | Tenant ID |
| LS_ID | bigint(20) | NO | Log Stream ID |
| TABLET_ID | bigint(20) | NO | Data Shard ID |
| START_LOG_SCN | bigint(20) unsigned | NO | The left boundary of the log timestamp range for the data in this table. |
| END_LOG_SCN | bigint(20) unsigned | NO | Right Boundary of Log Timestamp Range for Data in This Table |
| SIZE | bigint(20) | NO | Disk usage, in bytes |
| REF | bigint(20) | NO | The count of references to this table, in units of number |
| UPPER_TRANS_VERSION | bigint(20) unsigned | NO | Maximum Transaction Version Number of a Committed Transaction |
| IS_ACTIVE | varchar(3) | NO | Whether it is an active MemTable |
| CONTAIN_UNCOMMITTED_ROW | varchar(3) | NO | Whether the table contains uncommitted transaction rows:
|
Sample query
In the user tenant, view the MemTable and SSTable information of each partition for log stream 1001 on all OBServer nodes.
obclient [oceanbase]> SELECT * FROM oceanbase.GV$OB_SSTABLES WHERE LS_ID=1001;
The query result is as follows:
+----------------+----------+------------------+-----------+-------+-----------+---------------------+---------------------+---------+------+---------------------+-----------+-------------------------+
| SVR_IP | SVR_PORT | TABLE_TYPE | TENANT_ID | LS_ID | TABLET_ID | START_LOG_SCN | END_LOG_SCN | SIZE | REF | UPPER_TRANS_VERSION | IS_ACTIVE | CONTAIN_UNCOMMITTED_ROW |
+----------------+----------+------------------+-----------+-------+-----------+---------------------+---------------------+---------+------+---------------------+-----------+-------------------------+
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1002 | 1001 | 200032 | 0 | 1743357601718033000 | 380 | 0 | 1743155516647021000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MINOR | 1002 | 1001 | 49402 | 1 | 1743155746972459000 | 3244 | 0 | 4096 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | TX_DATA_MEMTABLE | 1002 | 1001 | 49402 | 1743155746972459000 | 4611686018427387903 | 1048576 | 3 | 0 | YES | YES |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1002 | 1001 | 200037 | 0 | 1743357601718033000 | 0 | 0 | 1743357601718033000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1002 | 1001 | 200015 | 0 | 1743357601718033000 | 411 | 0 | 1742957323483246000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1002 | 1001 | 200031 | 0 | 1743357601718033000 | 380 | 0 | 1743155516647021000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1002 | 1001 | 200007 | 0 | 1743357601718033000 | 643 | 0 | 1742541257735502000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1002 | 1001 | 200014 | 0 | 1743357601718033000 | 411 | 0 | 1742957323483246000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1002 | 1001 | 200030 | 0 | 1743357601718033000 | 380 | 0 | 1743155516647021000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1002 | 1001 | 200021 | 0 | 1743357601718033000 | 389 | 0 | 1743155475021424000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1002 | 1001 | 200016 | 0 | 1743357601718033000 | 411 | 0 | 1742957323483246000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1002 | 1001 | 200020 | 0 | 1743357601718033000 | 380 | 0 | 1743155475021424000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1002 | 1001 | 200038 | 0 | 1743357601718033000 | 0 | 0 | 1743357601718033000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1002 | 1001 | 200005 | 0 | 1743357601718033000 | 643 | 0 | 1742541257735502000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1002 | 1001 | 200036 | 0 | 1743357601718033000 | 0 | 0 | 1743357601718033000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1002 | 1001 | 200012 | 0 | 1743357601718033000 | 0 | 0 | 1743357601718033000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1002 | 1001 | 200018 | 0 | 1743357601718033000 | 384 | 0 | 1743152704981127000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1002 | 1001 | 200013 | 0 | 1743357601718033000 | 406 | 0 | 1742957323483246000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1002 | 1001 | 49401 | 0 | 1 | 0 | 0 | 1 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | TX_CTX_MEMTABLE | 1002 | 1001 | 49401 | 1 | 2 | 0 | 2 | 0 | YES | YES |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1002 | 1001 | 200004 | 0 | 1743357601718033000 | 961 | 0 | 1742541257735502000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1002 | 1001 | 200033 | 0 | 1743357601718033000 | 0 | 0 | 1743357601718033000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1002 | 1001 | 49403 | 0 | 1 | 0 | 0 | 1 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | LOCK_MEMTABLE | 1002 | 1001 | 49403 | 1 | 2 | 0 | 3 | 0 | YES | YES |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1002 | 1001 | 200002 | 0 | 1743357601718033000 | 933 | 0 | 1742541257735502000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1002 | 1001 | 200019 | 0 | 1743357601718033000 | 0 | 0 | 1743357601718033000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1002 | 1001 | 200003 | 0 | 1743357601718033000 | 774 | 0 | 1742541257735502000 | NO | NO |
+----------------+----------+------------------+-----------+-------+-----------+---------------------+---------------------+---------+------+---------------------+-----------+-------------------------+
27 rows in set