Note
This view is introduced since OceanBase Database V4.3.0.
Purpose
The CDB_MVREF_RUN_STATS view displays information about each refresh of materialized views. Each refresh is identified by a refresh ID. The information includes the timing statistics and refresh parameters of each refresh.
Columns
Column |
Type |
Nullable? |
Description |
|---|---|---|---|
| TENANT_ID | bigint(20) | NO | The ID of the tenant. |
| RUN_OWNER | varchar(128) | NO | The user that initiated the refresh. |
| REFRESH_ID | bigint(20) | NO | The ID of the refresh. |
| NUM_MVS | bigint(20) | NO | The number of materialized views refreshed. |
| MVIEWS | text | NO | The names of the materialized views specified in the API. |
| BASE_TABLES | text | YES | For internal use only. |
| METHOD | text | YES | The METHOD parameter specified in the API. |
| ROLLBACK_SEG | text | YES | The ROLLBACK_SEG parameter specified in the API. |
| PUSH_DEFERRED_RPC | varchar(1) | NO | The PUSH_DEFERRED_RPC parameter specified in the API. |
| REFRESH_AFTER_ERRORS | varchar(1) | NO | The REFRESH_AFTER_ERRORS parameter specified in the API. |
| PURGE_OPTION | bigint(20) | NO | The PURGE_OPTION parameter specified in the API. |
| PARALLELISM | bigint(20) | NO | The PARALLELISM parameter specified in the API. |
| HEAP_SIZE | bigint(20) | NO | The HEAP_SIZE parameter specified in the API. |
| ATOMIC_REFRESH | varchar(1) | NO | The ATOMIC_REFRESH parameter specified in the API. |
| NESTED | varchar(1) | NO | The NESTED parameter specified in the API. |
| OUT_OF_PLACE | varchar(1) | NO | The OUT_OF_PLACE parameter specified in the API. |
| NUMBER_OF_FAILURES | bigint(20) | NO | The number of failures occurred in processing the API. |
| START_TIME | datetime | NO | The start time of the refresh. |
| END_TIME | datetime | NO | The end time of the refresh. |
| ELAPSED_TIME | bigint(20) | NO | The duration of the refresh, in seconds. |
| LOG_SETUP_TIME | bigint(1) | NO | The log setup time for the materialized views, in seconds.
NoteThis column is used only for compatibility and is |
| LOG_PURGE_TIME | bigint(20) | NO | The log purge time for the materialized views, in seconds. |
| COMPLETE_STATS_AVAILABLE | varchar(1) | NO | Indicates whether all the complete refresh statistics can be used for this refresh. Valid values:
NoteThis column is used only for compatibility and is |
Sample query
obclient [test_db]> SELECT * FROM oceanbase.CDB_MVREF_RUN_STATS;
The query result is as follows:
+-----------+-----------+------------+---------+-----------------------+-------------+--------+--------------+-------------------+----------------------+--------------+-------------+-----------+----------------+--------+--------------+--------------------+---------------------+---------------------+--------------+----------------+----------------+--------------------------+
| TENANT_ID | RUN_OWNER | REFRESH_ID | NUM_MVS | MVIEWS | BASE_TABLES | METHOD | ROLLBACK_SEG | PUSH_DEFERRED_RPC | REFRESH_AFTER_ERRORS | PURGE_OPTION | PARALLELISM | HEAP_SIZE | ATOMIC_REFRESH | NESTED | OUT_OF_PLACE | NUMBER_OF_FAILURES | START_TIME | END_TIME | ELAPSED_TIME | LOG_SETUP_TIME | LOG_PURGE_TIME | COMPLETE_STATS_AVAILABLE |
+-----------+-----------+------------+---------+-----------------------+-------------+--------+--------------+-------------------+----------------------+--------------+-------------+-----------+----------------+--------+--------------+--------------------+---------------------+---------------------+--------------+----------------+----------------+--------------------------+
| 1002 | root | 64670 | 1 | test_db.mv1_tbl1_tbl2 | NULL | NULL | NULL | N | N | 0 | 0 | 0 | N | N | N | 0 | 2024-01-17 16:26:28 | 2024-01-17 16:26:28 | 0 | 0 | 0 | Y |
| 1002 | root | 64672 | 1 | test_db.mv2_tbl1_tbl2 | NULL | NULL | NULL | N | N | 0 | 0 | 0 | N | N | N | 0 | 2024-01-17 16:26:28 | 2024-01-17 16:26:28 | 0 | 0 | 0 | Y |
+-----------+-----------+------------+---------+-----------------------+-------------+--------+--------------+-------------------+----------------------+--------------+-------------+-----------+----------------+--------+--------------+--------------------+---------------------+---------------------+--------------+----------------+----------------+--------------------------+
2 rows in set (0.091 sec)