PM50008: ENHANCE ACQUISITION AND USE OF STORGE WHEN LOAD HAS TO HANDLE ROWS WITH DUPLICATE KEY VALUES.

A fix is available

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • Enhance acquisition and use of storge when LOAD has to handle
    rows with duplicate key values.
    

Local fix

  • Eliminate dupliates from SYSREC input file before running LOAD.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All DB2 9 for z/OS and DB2 10 for z/OS users *
    *                 running LOAD on a table with a unique index. *
    ****************************************************************
    * PROBLEM DESCRIPTION: LOAD utility issuing a huge number      *
    *                      of MSGDSNU345I messages, along with a   *
    *                      MSGICE247I message, resulted in         *
    *                      ABEND04E RC00E40020, and ABEND04E       *
    *                      RC00E20015 at DSNSVSTK + x'0124'.       *
    *                      DB2 subsystem abnormally terminated     *
    *                      with ABEND04F RC00E50706.               *
    ****************************************************************
    * RECOMMENDATION: Apply corrective PTF when available.         *
    ****************************************************************
    A LOAD utility was run on a table with a unique index.
    During the LOAD, a huge number of duplicate keys were detected
    resulting in DSNU345I - UNIQUE INDEX KEY DUPLICATES KEY FROM
    INPUT RECORD... being issued. During the LOAD, message
    ICE247I - INTERMEDIATE MERGE ENTERED - PERFORMANCE MAY BE
    DEGRADED was also issued. Following this, LOAD abended with
    ABEND04E RC00E20015 at DSNSVSTK + x'0124' followed by ABEND04E
    RC00E40020. DB2 then issued MSGDSNV086E - DB2 ABNORMAL
    TERMINATION and abnormally terminated with ABEND04F RC00E50706
    due to below the bar storage shortage.
    
    The storage shortage occurred because the control blocks used
    to handle duplicate keys were not reused nor deallocated, but
    always newly allocated when processing the duplicate keys.
    

Problem conclusion

  • The code has been modified to properly allocate and reuse
    storage for duplicate keys processing.
    

Temporary fix

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

Comments

APAR Information

  • APAR number

    PM50008

  • 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

    2011-10-13

  • Closed date

    2011-11-23

  • Last modified date

    2012-01-01

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

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

    UK74133 UK74134

Modules/Macros

  • DSNURBXA
    

Fix information

  • Fixed component name

    DB2 OS/390 & Z/

  • Fixed component ID

    5740XYR00

Applicable component levels

  • RA10 PSY UK74133

       UP11/12/08 P F112

  • R910 PSY UK74134

       UP11/12/08 P F112

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


More support for:

DB2 for z/OS

Software version:

910

Reference #:

PM50008

Modified date:

2012-01-01

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