IBM Support

PI89884: ABEND0C4 DSNXXQS 044E OFFSET044E MAY OCCUR WITH USE OF XMLAGG FUNCTION AND XML QUICKSORT SORTING HUGE AMOUNT OF DATA

A fix is available

Subscribe

You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • ABEND0C4 DSNXXQS 044E OFFSET044E may occur for complex XML
    queries that involves XMLAGG function / xml quicksort
    that used more than 16M chunks to sort
    
    Keywords:
    SMCOVERLAY DB2OVERLAY/K
    

Local fix

  • n/a
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All Db2 11 and Db2 12 for z/OS users of                      *
    * the XMLAGG function.                                         *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * An ABEND0C4 rc4 can occur at DSNXGRDS                        *
    * DSNXXQS OFFSET044E when using the                            *
    * XMLAGG function to sort a very large                         *
    * amount of data.                                              *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Apply corrective PTF when available                          *
    ****************************************************************
    An ABEND0C4 rc4 can occur at location DSNXGRDS DSNXXQS
    OFFSET044E when using the the XMLAGG function to sort a very
    large amount of data.
    
    This problem can occur when during the XML quicksort, there is
    a need to expand the internal stack storage and copy the
    existing storage contents to the new storage.  It can be
    triggered when the amount of storage to copy is larger
    than 16M.
    
    Please note that this 'copying' could also result in a storage
    overlay. The symptoms are unpredictable.
    

Problem conclusion

  • Db2 has been modified to perform the copying of the storage in
    segments if the amount of data to be copied exceeds 16M.  This
    will prevent the abend and/or possible overlay.
    
    Additional Keywords: XMLAGG SMCOVERLAY DB2OVERLAY/K
    

Temporary fix

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

Comments

APAR Information

  • APAR number

    PI89884

  • Reported component name

    DB2 OS/390 & Z/

  • Reported component ID

    5740XYR00

  • Reported release

    B10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-11-08

  • Closed date

    2017-12-06

  • Last modified date

    2018-01-03

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

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

    UI52486 UI52487

Modules/Macros

  • DSNXXQS
    

Fix information

  • Fixed component name

    DB2 OS/390 & Z/

  • Fixed component ID

    5740XYR00

Applicable component levels

  • RC10 PSY UI52486

       UP17/12/22 P F712 ¢

  • RB10 PSY UI52487

       UP17/12/22 P F712 ¢

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.



Document information

More support for: DB2 for z/OS

Software version: B10

Reference #: PI89884

Modified date: 03 January 2018


Translate this page: