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doc-exports/docs/dws/dev/dws_04_0636.html
luhuayi 177cd61a57 DWS DEVG 910.211 version 
Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com>
Co-authored-by: luhuayi <luhuayi@huawei.com>
Co-committed-by: luhuayi <luhuayi@huawei.com>
2025-05-05 07:44:03 +00:00

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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

Column

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