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PM63328: PLANS REBOUND ON V9 AFTER MIGRATION FAIL ABEND 04E RC00E20029 IN DSNXEFB DSNSVBK OFFSET09CA DUE TO A STORAGE OVERLAY

A fix is available

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APAR status

  • Closed as program error.

Error description

  • Rebind PLAN with ACQUIRE(ALLOCATE) on V9 after migration from V8
    fails ABEND04E 00E20029 in DSNXEFB DSNSVBK +09CA due to a
    storage overlay by the DMBIBLOK workarea block.
    Additional symptoms: ABENDS0C4 PIC11 DSNGEDM DSNGESIS OFFSET0BB6
                         ABEND 0C4 PIC04 DSNSLD1 DSNSVBK  OFFSET1DE8
    

Local fix

  • REBIND with ACQUIRE(USE)
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All DB2 9 for z/OS users who bind the plan   *
    *                 with ACQUIRE(ALLOC) option.                  *
    ****************************************************************
    * PROBLEM DESCRIPTION: While performing static binds, the      *
    *                      following abends might be encountered   *
    *                      due to storage overlay:                 *
    *                                                              *
    *                      ABEND0C4 at DSNGESIS+0BB6 OR            *
    *                                                              *
    *                      ABEND04E RC00E20029 at                  *
    *                      DSNXEFB.DSNSVBK+09CA OR                 *
    *                                                              *
    *                      ABEND0C4 at DSNSLD1 .DSNSVBK +1DE8      *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    During the DB2 9 migration process, many binds with
    ACQUIRE(ALLOCATION) option caused various abends due to storage
    overlay.  A storage overlay can occur when the size of a control
    block that DB2 builds during bind exceeds 4K.  A plan that
    references a partitioned table space with more than 241
    partitions will result in a control block greater than 4KB.
    

Problem conclusion

  • DB2 code was changed to intelligently process those control
    blocks whose size is larger than 4K to avoid unnecessary storage
    overlap.
    
    Additional Keywords: SMCOVERLAY
    

Temporary fix

  • *********
    * HIPER *
    *********
    

Comments

APAR Information

  • APAR number

    PM63328

  • Reported component name

    DB2 OS/390 & Z/

  • Reported component ID

    5740XYR00

  • Reported release

    910

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-04-25

  • Closed date

    2012-07-02

  • Last modified date

    2012-08-08

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

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

    UK80002

Modules/Macros

  • DSNIALLC DSNISPSC
    

Fix information

  • Fixed component name

    DB2 OS/390 & Z/

  • Fixed component ID

    5740XYR00

Applicable component levels

  • R910 PSY UK80002

       UP12/07/20 P F207

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:
08 August 2012