Note
This view is available starting with V4.0.0.
Purpose
This view displays the MemTable and SSTable information for each partition of the current tenant on the current OBServer node.
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. |
| TABLE_TYPE | VARCHAR2(20) | NO | The type of the table. |
| LS_ID | NUMBER(38) | NO | The ID of the log stream. |
| TABLET_ID | NUMBER(38) | NO | The ID of the data tablet. |
| START_LOG_SCN | NUMBER(38) | NO | The left boundary of the log timestamp range of the data in the table. |
| END_LOG_SCN | NUMBER(38) | NO | The right boundary of the log timestamp range of the data in the table. |
| SIZE | NUMBER(38) | NO | The disk space occupied, in bytes. |
| REF | NUMBER(38) | NO | The reference count of the table, in number of references. |
| UPPER_TRANS_VERSION | NUMBER(38) | NO | The maximum transaction version number of the committed transactions. |
| IS_ACTIVE | VARCHAR2(3) | NO | Indicates whether the MemTable is active. |
| CONTAIN_UNCOMMITTED_ROW | VARCHAR2(3) | NO | Indicates whether the table contains uncommitted transaction rows:
|
Sample query
Query the MemTable and SSTable information for each partition of the current tenant on the current OBServer node in the user tenant for log stream 1001.
obclient [SYS]> SELECT * FROM SYS.V$OB_SSTABLES WHERE LS_ID=1001;
The query result is as follows:
+----------------+----------+------------------+-------+-----------+---------------------+---------------------+----------+------+---------------------+-----------+-------------------------+
| SVR_IP | SVR_PORT | TABLE_TYPE | 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 | 1001 | 49402 | 0 | 1 | 0 | 0 | 1 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MINOR | 1001 | 49402 | 1 | 1743391602135333001 | 4007 | 0 | 4096 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | TX_DATA_MEMTABLE | 1001 | 49402 | 1743391602135333001 | 4611686018427387903 | 1048576 | 3 | 0 | YES | YES |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1001 | 200008 | 0 | 1743357601723336000 | 634 | 0 | 1742884853812859000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1001 | 200017 | 0 | 1743357601723336000 | 0 | 0 | 1743357601723336000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1001 | 200059 | 0 | 1743357601723336000 | 0 | 0 | 1743357601723336000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1001 | 200015 | 0 | 1743357601723336000 | 0 | 0 | 1743357601723336000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1001 | 200007 | 0 | 1743357601723336000 | 710 | 0 | 1742884853812859000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1001 | 200024 | 0 | 1743357601723336000 | 383 | 0 | 1743153227043218000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1001 | 200016 | 0 | 1743357601723336000 | 0 | 0 | 1743357601723336000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1001 | 200005 | 0 | 1743357601723336000 | 720 | 0 | 1742884853812859000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1001 | 200060 | 0 | 1743357601723336000 | 0 | 0 | 1743357601723336000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MEMTABLE | 1001 | 200060 | 1 | 4611686018427387903 | 62914560 | 2 | 9223372036854775807 | YES | YES |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1001 | 200012 | 0 | 1743357601723336000 | 624 | 0 | 1742884853812859000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1001 | 200018 | 0 | 1743357601723336000 | 0 | 0 | 1743357601723336000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1001 | 200013 | 0 | 1743357601723336000 | 623 | 0 | 1742884853812859000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1001 | 49401 | 0 | 1 | 0 | 0 | 1 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | TX_CTX_MEMTABLE | 1001 | 49401 | 1 | 2 | 0 | 2 | 0 | YES | YES |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1001 | 200004 | 0 | 1743357601723336000 | 720 | 0 | 1742884853812859000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1001 | 49403 | 0 | 1 | 0 | 0 | 1 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MINI | 1001 | 49403 | 1 | 1743045514426661000 | 0 | 0 | 1743045514426661000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | LOCK_MEMTABLE | 1001 | 49403 | 1 | 1743045514426661000 | 0 | 3 | 0 | YES | YES |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1001 | 200002 | 0 | 1743357601723336000 | 874 | 0 | 1742884853812859000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1001 | 200003 | 0 | 1743357601723336000 | 838 | 0 | 1742884853812859000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1001 | 200006 | 0 | 1743357601723336000 | 725 | 0 | 1742884853812859000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1001 | 200010 | 0 | 1743357601723336000 | 653 | 0 | 1742884853812859000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1001 | 200009 | 0 | 1743357601723336000 | 638 | 0 | 1742884853812859000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1001 | 200011 | 0 | 1743357601723336000 | 633 | 0 | 1742884853812859000 | NO | NO |
| 11.xxx.xxx.xxx | 28825 | MAJOR | 1001 | 200001 | 0 | 1743357601723336000 | 0 | 0 | 1743357601723336000 | NO | NO |
+----------------+----------+------------------+-------+-----------+---------------------+---------------------+----------+------+---------------------+-----------+-------------------------+
29 rows in set