IBM Support

IT29242: PERFORMANCE MAY BE AFFECTED BY DYNAMIC SQL CACHE NON REUSE

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APAR status

  • Closed as program error.

Error description

  • db2pd -dynamic might report multiple "Dynamic SQL Variations"
    existing in the package cache with the same environment and
    all have a Val (Valid) value of "N".  As a result the statement
    associated with this variation keeps getting recompiled
    repeatedly instead of finding a cache hit.   Side effects can
    include overall poor performance (due to having to compile the
    statement each time), possible contention on various locks and
    latches that can occur due to the high volume of compiles.
    

Local fix

  • N/A
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * ALL                                                          *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * db2_v111m4fp5                                                *
    ****************************************************************
    

Problem conclusion

  • db2_v111m4fp5
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT29242

  • Reported component name

    DB2 FOR LUW

  • Reported component ID

    DB2FORLUW

  • Reported release

    B10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2019-05-23

  • Closed date

    2020-02-23

  • Last modified date

    2020-02-23

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    DB2 FOR LUW

  • Fixed component ID

    DB2FORLUW

Applicable component levels

[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSEPGG","label":"DB2 for Linux, UNIX and Windows"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"11.1","Edition":"","Line of Business":{"code":"LOB10","label":"Data and AI"}}]

Document Information

Modified date:
23 February 2020