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.

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.

**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.

Parent topic: System Catalogs

Previous topic: PLAN_TABLE_DATA

Next topic: TABLES_SNAP_TIMESTAMP

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