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Status Not under consideration
Workspace Db2 for z/OS
Created by Guest
Created on Jul 26, 2018

SQLCODE -20528 SQLCODE20528N

CCB occasionally received SQLCODE -20528. As stated in DB2 CODES manual, this can occur while two transactions trying to update a row in system-period temporal table closely. A row being moved to history table can have sys_start higher than sys_end that results in the error. Customer will need to resubmit job after the failure.
  • Admin
    Janet Figone
    Reply
    |
    Dec 7, 2020

    Thank you for submitting this Db2 for z/OS Idea.

    After giving the request a comprehensive review, we have determined that we cannot include it as a candidate in an upcoming deliverable because it is not consistent with product architecture. As a consequence we will not be implementing this Idea.

    We appreciate your input to the Db2 for z/OS development team. We also hope that you will continue to submit ideas for improvements as customer feedback is a key component to shaping the future direction of Db2 for z/OS.

    Sincerely,

    Db2 for z/OS Team

  • Admin
    Janet Figone
    Reply
    |
    Jul 31, 2020

    Hi Jeff, I have alerted our developer of your comment and asked for a response to your question.

  • Guest
    Reply
    |
    Jun 3, 2020

    We are trying to create an audit trail for updates to a critical table, and making it a system-period temporal table seemed to be the perfect solution without having to change any application code. However these -20528 errors are making this option unusable.

    I don't understand the comment that "the product decision is to be different from LUW". Is DB2 for z/OS implementing a different way to solve this problem?

    Honestly, it would seem to make more sense for the row-begin column to be set to the actual time of the update, rather than the time of the start of the unit of work. Then you could see the actual order that the rows were updated. You would still have the transaction start column to identify rows updated in the same transaction.

  • Admin
    Janet Figone
    Reply
    |
    Feb 13, 2020

    Thank you for submitting this enhancement. The product decision is to be different from LUW therefore this enhancement is not under consideration.