Help Center/ GaussDB/ Developer Guide(Centralized_2.x)/ System Catalogs and System Views/ System Catalogs/ GS_TXN_SNAPSHOT

Updated on 2023-10-23 GMT+08:00

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GS_TXN_SNAPSHOT

GS_TXN_SNAPSHOT is a timestamp-CSN mapping table. It periodically samples and maintains an appropriate time range to estimate the CSN value corresponding to the timestamp in the range.

**Table 1** GS_TXN_SNAPSHOT columns
Name	Data Type	Description
snptime	timestamp with time zone	Snapshot time
snpxmin	bigint	Minimum transaction ID snapshots
snpcsn	bigint	Commit sequence number (CSN) snapshots
snpsnapshot	text	Serialized snapshot text

Parent topic: System Catalogs

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