Help Center/ GaussDB/ Feature Guide(Centralized_V2.0-8.x)/ Storage Engine/ Storage Engine Architecture/ Storage Engine Update Description/ GaussDB Kernel R2

Updated on 2025-05-29 GMT+08:00

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GaussDB Kernel R2

Ustore, an in-place update row-store engine, is added to implement separate storage of new and old data.
Ustore supports rollback segments.
Ustore supports the synchronous, asynchronous, and in-page rollback.
Ustore supports enhanced B-tree indexes for transactions.
Astore supports the flashback function to implement table flashback, flashback query, flashback DROP, and flashback TRUNCATE.
Ustore does not support the following features: distributed deployment, parallel query, table sampling, global temporary table, online creation, index rebuild, ultimate RTO, VACUUM FULL, and column constraints DEFERRABLE and INITIALLY DEFERRED.

Parent topic: Storage Engine Update Description

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