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Status Not under consideration
Created by Guest
Created on Apr 17, 2018

Classic CDC/ IIDR for VSAM needs to send only needed data for Replication

Classic CDC/IIDR for Vsam capture is sending the before values for all fields in source VSAM datasets.
This adds significant overhead. The capture needs to send the before and after values of the key column and before and after image of the changed columns only (+ if any additional columns are enabled for conflict detection). This will provide significant performance benefits especially when replication is setup across long distance. Only needed data will be sent across the sites. This feature I believe is include in the IBM DB2 for Zos CDC capture with "minimize network load" option and even in QREP product with the "Changed_cols_only" option.

  • Guest
    Reply
    |
    May 21, 2021

    [IBM Update]

    Hi,

    Thank you for filing this requirement and for your interest in keeping our IMS/VSAM Data Replication technologies vital and successful. We depend on your continued interest and ideas to help ensure our products keep pace with market needs and industry standards.

    Although we do agree that your request is valid, after monitoring your request for more customer demand over the last few years and applying other relevant evaluation criteria, unfortunately we won't be able to accept your request at this time. However, if there is still an important business need, we encourage you to file a new idea accompanied with any additional information that could help us prioritize the requirement in the future.