Note
This view is introduced since OceanBase Database V4.3.0.
Purpose
The DBA_MVREF_STATS_SYS_DEFAULTS view displays the system-level default values of refresh history statistical attributes for materialized views.
Columns
Column |
Type |
Nullable? |
Description |
|---|---|---|---|
| PARAMETER_NAME | CHAR(16) | NO | The name of the parameter. Valid values:
|
| VALUE | VARCHAR2(40) | NO | The system-level default value of the parameter. |
Sample query
obclient [test_db]> SELECT * FROM SYS.DBA_MVREF_STATS_SYS_DEFAULTS;
The query result is as follows:
+------------------+---------+
| PARAMETER_NAME | VALUE |
+------------------+---------+
| COLLECTION_LEVEL | TYPICAL |
| RETENTION_PERIOD | 31 |
+------------------+---------+
2 rows in set (0.007 sec)