Tracking change data capture log history

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United States of America Patent

PATENT NO 11514020
SERIAL NO

17097026

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Abstract

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A method includes obtaining a first snapshot of a source system and deriving a set of key-value pairs reflecting the first snapshot. A mirror operation of the source system is performed to obtain CDC change operations. The method obtains a first CDC log as a first sequence of key-value pairs. A second snapshot of the source system is obtained and a set of key-value pairs is derived, which reflects the second snapshot. The first sequence of key-value pairs is compared with the set of key-value pairs to derive corrective CDC operations, captured as a set of key-value pairs. The corrective CDC operations represent corrections to be performed with respect to the first sequence of key-value pairs. A second CDC log is obtained as a second sequence of key-value pairs. The corrective CDC operations ensure that the second sequence of key-value pairs are coherent with the set of key-value pairs.

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Patent Owner(s)

  • INTERNATIONAL BUSINESS MACHINE CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bauer, Daniel Nikolaus Zurich, CH 9 57
Froese, Florian Hermann Zurich, CH 3 3
Garces, Erice Luis Rueschlikon, CH 1 0
Rooney, John G Zurich, CH 42 482

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