Help Center/ GaussDB/ Feature Guide(Distributed_3.x)/ Storage Engine/ Ustore/ Storage Format/ Undo/ Rollback Segment Management

Updated on 2024-05-20 GMT+08:00

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Rollback Segment Management

Each undo zone manages some txn pages and undo pages.
Undo rows are stored on undo pages. Therefore, the modified data of historical versions is recorded on the undo pages.
Records on the undo pages are also data. Therefore, modifications on the undo pages are also recorded on the redo pages.

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