Note
- This view is available starting with V4.3.5 for V4.3.x.
- This view is available starting with V4.2.2 for V4.2.x.
Purpose
The V$OB_SESS_TIME_MODEL view displays the session-level time model statistics on the current node.
Columns
| Column | Type | Nullable | Description |
|---|---|---|---|
| SID | bigint(20) | NO | The session ID. |
| TENANT_ID | bigint(20) | NO | The tenant ID. |
| SVR_IP | varchar(46) | NO | The IP address of the node. |
| SVR_PORT | bigint(20) | NO | The port number of the node. |
| STAT_ID | bigint(20) | NO | The ID of the statistics item. |
| STAT_NAME | varchar(64) | NO | The name of the statistics item. |
| VALUE | bigint(20) | NO | The value of the statistics item. |
The values in the STAT_NAME column of this view are the names and IDs of the statistics events, as shown in the following table.
| Statistics Event Name | Description | Statistics Event ID | Statistics Event Type |
|---|---|---|---|
| DB time | The total time of database activity, including the sum of CPU time and non-idle wait time. | 200001 | 3072 |
| DB CPU | The CPU time consumed in database activities. | 200002 | 3072 |
| background elapsed time | The total time spent by background processes. | 200005 | 3072 |
| background cpu time | The CPU time consumed by background processes. | 200006 | 3072 |
| non idle wait time | The total time spent in non-idle waiting, i.e., the total time when a session is in a waiting state but not in an idle wait. | 200010 | 3072 |
| idle wait time | The total time spent in idle waiting, i.e., the total time when a session is in an idle wait state. | 200011 | 3072 |
| background database time | The total time spent by background processes in executing database operations. | 200012 | 3072 |
| background database non-idle wait time | The time spent by background processes in executing database operations during non-idle waiting. | 200013 | 3072 |
| background database idle wait time | The time spent by background processes in executing database operations during idle waiting. | 200014 | 3072 |
| concurrency wait total time | The total wait time caused by concurrency issues, such as the wait time due to resource locking. | 220001 | 3072 |
| user io wait total time | The total time spent by user processes waiting for I/O operations (such as reading or writing data to disk) to complete. | 220002 | 3072 |
| application wait total time | The total wait time caused by user application code, such as lock waits due to row-level locking or explicit locking commands. | 2200013 | 3072 |
Sample query
Query the session-level time model statistics on the current node and display the first 10 records.
obclient [oceanbase]> SELECT * FROM oceanbase.V$OB_SESS_TIME_MODEL LIMIT 10;
The query result is as follows:
+--------------+-----------+----------------+----------+---------+--------------------+-------+
| SID | TENANT_ID | SVR_IP | SVR_PORT | STAT_ID | STAT_NAME | VALUE |
+--------------+-----------+----------------+----------+---------+--------------------+-------+
| 3221700502 | 1 | 172.xx.xxx.xxx | 2882 | 200010 | non idle wait time | 222 |
| 3221700502 | 1 | 172.xx.xxx.xxx | 2882 | 200011 | idle wait time | 0 |
| 3221684120 | 1 | 172.xx.xxx.xxx | 2882 | 200010 | non idle wait time | 0 |
| 3221684120 | 1 | 172.xx.xxx.xxx | 2882 | 200011 | idle wait time | 0 |
| 3221700503 | 1 | 172.xx.xxx.xxx | 2882 | 200010 | non idle wait time | 0 |
| 3221700503 | 1 | 172.xx.xxx.xxx | 2882 | 200011 | idle wait time | 0 |
| 3221684121 | 1 | 172.xx.xxx.xxx | 2882 | 200010 | non idle wait time | 0 |
| 3221684121 | 1 | 172.xx.xxx.xxx | 2882 | 200011 | idle wait time | 0 |
| 549755813888 | 500 | 172.xx.xxx.xxx | 2882 | 200010 | non idle wait time | 0 |
| 549755813888 | 500 | 172.xx.xxx.xxx | 2882 | 200011 | idle wait time | 0 |
+--------------+-----------+----------------+----------+---------+--------------------+-------+
10 rows in set