Help Center/ Data Warehouse Service/ Standard Data Warehouse (9.1.0.x)/ DWS System Catalogs and Views/ System Catalogs/ TABLES_SNAP_TIMESTAMP
Updated on 2025-10-09 GMT+08:00
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TABLES_SNAP_TIMESTAMP

TABLES_SNAP_TIMESTAMP records the start and end time of the snapshots created for each performance view. 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.tables_snap_timestamp columns

Column

Type

Description

snapshot_id

Name

Snapshot ID. This column is the primary key and distribution key.

db_name

Text

Name of the database to which the view belongs.

tablename

Text

View name.

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