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Status Not under consideration
Workspace Db2 for z/OS
Created by Guest
Created on May 11, 2023

Use OPTHINT for package with version

Db2 uses the following PLAN_TABLE columns when matching rows that specify access paths to SQL statements:

QUERYNO , APPLNAME , PROGNAME , VERSION , COLLID , OPTHINT

If I use PKGVERSION(AUTO) during precompile I need to change my OPTHINT every time.

I propose to use a wildcard value for VERSION column in OPTHINT PLAN_TABLE row so it could be use for every version of the package

Needed By Yesterday (Let's go already!)
  • Admin
    Janet Figone
    Reply
    |
    Nov 8, 2023

    Hello Claudio, Our SME indicated you exchanged some emails with her where she explained what the overhead is if we provided the support that you requested. Please let us know if you require any additional information regarding this enhancement request. And please do continue to submit enhancement requests to us as we review each and every one as a potential candidate for improving the Db2 for z/OS product.

    Sincerely,

    The Db2 for z/OS Team

  • Admin
    Janet Figone
    Reply
    |
    Nov 7, 2023

    Thank you Claudio. Our SME is reviewing your update and I will let you know when they have a response.

  • Guest
    Reply
    |
    Sep 12, 2023

    Hello Janet

    I don't understand your comment related to overhead for users who prefer different a/p across different versions.

    In this case user will not use wild card for version and it works with version indicated or no version, as today

  • Admin
    Janet Figone
    Reply
    |
    Sep 11, 2023

    Dear Claudio, Thank you for submitting this enhancement request. Our development team reviewed it and provided the following feedback:

    VERSION has always been part of SQL identity for OPTHINT. If we support the wild card match, while it removes the overhead of changing OPTHINT column every time for this user, it adds similar overhead to other users who prefer different a/p across different versions.

    Therefore, we are not considering this idea at this time. If more customers prefer this new behavior, we can reconsider.

    Sincerely,

    The Db2 for z/OS team