SNAPSHOT records the start and end time of each performance view snapshot creation. After enable_wdr_snapshot is set to on, this catalog is created and maintained by the background snapshot thread. It is accessible only to users with system administrator rights.
Name |
Type |
Description |
|---|---|---|
snapshot_id |
name |
Snapshot ID. This column is the primary key and distribution key. |
start_ts |
timestamp with time zone |
Snapshot start time |
end_ts |
timestamp with time zone |
Snapshot end time |
- This system catalog's schema is dbms_om.
- Do not modify or delete this catalog externally. Otherwise, functions related to view snapshots may not work properly.