Purpose
The V$OB_THREAD view displays the status information about all threads in the observer process.
Note
This view is introduced since OceanBase Database V4.2.0.
Columns
| Column | Type | Nullable? | Description |
|---|---|---|---|
| SVR_IP | VARCHAR2(46) | NO | The IP address of the observer process. |
| SVR_PORT | NUMBER(38) | NO | The port number of the observer process. |
| TENANT_ID | NUMBER(38) | NO | The ID of the tenant to which the thread belongs. The value is 500 for a process-level thread. |
| TID | NUMBER(38) | NO | The ID of the thread. |
| TNAME | VARCHAR2(16) | NO | The name of the thread. |
| STATUS | VARCHAR2(32) | NO | The status of the thread. Valid values:
|
| LATCH_WAIT | VARCHAR2(16) | NO | The address of the latch that the thread is waiting for. |
| LATCH_HOLD | VARCHAR2(256) | NO | The address of the latch held by the thread. Multiple latches may be held by the thread. |
| TRACE_ID | VARCHAR2(40) | NO | The ID of the trace that is being executed by the thread. |
| CGROUP_PATH | NO | The path of the cgroup to which the thread belongs. The information in this column comes from the CPU line under the /proc/observer-pid/task/tid/cgroup path.
NoteThis column is introduced in V4.2.2. |
Example
obclient > SELECT * FROM SYS.V$OB_THREAD WHERE ROWNUM <= 2;
The query result is as follows:
+----------------+----------+-----------+-------+-----------------+--------+------------+------------+------------------------------------+-------------+
| SVR_IP | SVR_PORT | TENANT_ID | TID | TNAME | STATUS | LATCH_WAIT | LATCH_HOLD | TRACE_ID | CGROUP_PATH |
+----------------+----------+-----------+-------+-----------------+--------+------------+------------+------------------------------------+-------------+
| xx.xx.xx.xx | 28824 | 1004 | 92964 | T1004_TTLTablet | Wait | NULL | NULL | Y70980BA1CCFB-00060E2D0E29CB61-0-0 | NULL |
| xx.xx.xx.xx | 28824 | 1004 | 92832 | T1004_TTLManage | Wait | NULL | NULL | Y70980BA1CCFB-00060E2D0DF9CB62-0-0 | NULL |
+----------------+----------+-----------+-------+-----------------+--------+------------+------------+------------------------------------+-------------+
2 rows in set (0.041 sec)
