Note
This view is available starting with V4.0.0.
Purpose
This view displays the major compaction information of each zone in the current tenant.
Columns
| Column | Type | Nullable? | Description |
|---|---|---|---|
| ZONE | VARCHAR2(128) | NO | The name of the zone. |
| BROADCAST_SCN | NUMBER(38) | NO | The version number of the broadcast major compaction. |
| LAST_SCN | NUMBER(38) | NO | The version number of the last major compaction. |
| LAST_FINISH_TIME | NUMBER(38) | NO | The end time of the last major compaction. |
| START_TIME | NUMBER(38) | NO | The start time of the major compaction. |
| STATUS | VARCHAR2(10) | NO |
|
Sample query
Query the major compaction information of each zone in the current user tenant.
obclient> SELECT * FROM SYS.DBA_OB_ZONE_MAJOR_COMPACTION;
The query result is as follows:
+-------+---------------------+---------------------+------------------+------------------+--------+
| ZONE | BROADCAST_SCN | LAST_SCN | LAST_FINISH_TIME | START_TIME | STATUS |
+-------+---------------------+---------------------+------------------+------------------+--------+
| zone1 | 1748455200327759000 | 1748455200327759000 | 1748455572486949 | 1748455200370343 | IDLE |
+-------+---------------------+---------------------+------------------+------------------+--------+
1 row in se
References
Query the global major compaction information of the current tenant: DBA_OB_MAJOR_COMPACTION
Query the detailed historical information about major compactions at the tablet level:
For information about major compaction operations, see the following topics: