SNAPSHOT

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.

**Table 1** dbms_om.snapshot columns
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.

Parent topic: System Catalogs

Previous topic: PLAN_TABLE_DATA

Next topic: TABLES_SNAP_TIMESTAMP

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