IBM Support

IT31151: WRONG RESULTS ARE POSSIBLE WITH COMPLEX SQL WHICH USES UDFS AND CONSTANTS AND ENCOUNTER A COMPLEX PLAN.

Subscribe to this APAR

By subscribing, you receive periodic emails alerting you to the status of the APAR, along with a link to the fix after it becomes available. You can track this item individually or track all items by product.

Notify me when this APAR changes.

Notify me when an APAR for this component changes.

 

APAR status

  • Closed as program error.

Error description

  • wrong results are possible with complex sql which uses UDFs and
    constants and encounter a complex plan.
    
    customers can contact Db2 support and provide a section dump for
    examination to detect if the problem is present.
    

Local fix

  • db2set DB2_TCG_DEFAULT_OPTIONS="set batch_scalar_udf off"
    This is internal optimization. After setting this reg var static
    packages will need to be re-recreated.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * 250                                                          *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to 11.1.4.6                                          *
    ****************************************************************
    

Problem conclusion

  • Upgrade to 11.1.4.6
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT31151

  • 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

    2019-12-03

  • Closed date

    2021-03-22

  • Last modified date

    2021-03-29

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

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

    IT31163

Fix information

  • Fixed component name

    DB2 FOR LUW

  • Fixed component ID

    DB2FORLUW

Applicable component levels

[{"Line of Business":{"code":"LOB10","label":"Data and AI"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSEPGG","label":"Db2 for Linux, UNIX and Windows"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"11.1"}]

Document Information

Modified date:
31 March 2021