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PM26356: ABEND04E RC00E70005 DSNXOMB M020 DUE TO PREDICATE INCORRECTLY SET AS UNSARGABLE .

A fix is available

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APAR status

  • Closed as program error.

Error description

  • ABEND 04E 00E70005 DSNXOMB M020 ( -20 ) due to invalid predicate
    category number set during access path selection for sargable
    predicate.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All DB2 for z/OS users whose queries contain *
    *                 join predicates.                             *
    ****************************************************************
    * PROBLEM DESCRIPTION: ABEND04E RC00E70005 DSNXOMB M020 may    *
    *                      occur due to an incorrect internal      *
    *                      setting of a duplicated join predicate. *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    ABEND04E RC00E70005 DSNXOMB M020 may occur because of an
    incorrect internal setting of a duplicated join predicate. For
    example:
    
    SELECT *
    FROM T1
    LEFT JOIN T2 ON T1.C1 = T2.C1
    AND T1.C2 = T2.C2
    AND T1.C1 = T2.C1;
    
    where the join predicate T1.C1=T2.C1 has a duplicate, and DB2
    may have an incorrect internal setting of the duplicated join
    predicate which may cause the abend.
    
    
    Additional Keywords:
    ABEND04E RC00E70005 DSNXOMB M020  SQLACCESSPATH
    

Problem conclusion

  • Code is changed to correct ABEND04E RC00E70005 DSNXOMB M020
    for the situation described above. As with any change to DB2
    query optimization that can drive a different access path,
    there is some risk of query performance regression.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM26356

  • Reported component name

    DB2 OS/390 & Z/

  • Reported component ID

    5740XYR00

  • Reported release

    910

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2010-11-09

  • Closed date

    2011-04-29

  • Last modified date

    2011-06-02

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

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

    UK67284

Modules/Macros

  • DSNXOGP
    

Fix information

  • Fixed component name

    DB2 OS/390 & Z/

  • Fixed component ID

    5740XYR00

Applicable component levels

  • R910 PSY UK67284

       UP11/05/17 P F105

Fix is available

  • Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.

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Document Information

Modified date:
02 June 2011