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PH22906: MAX_EXPECTED_ROWS IGNORED FOR SORT INVOCATION IF SORTUTIL=SORT

A fix is available

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APAR status

  • Closed as program error.

Error description

  • Although MAX_EXPECTED_ROWS is specified in an
    unload involving an ORDER clause, Db2 HPU invokes the DFSORT
    compliant site default sort program
    (if SORTUTIL=SORT) with parameters meant for the number of
    records of the whole table which can lead to undesired
    over allocation of resources for the sort process.
    

Local fix

  • if available on your site, use DB2 SORT by specifying SORTUTIL
    DB2 SORT.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: Users of Db2 High Performance Unload         *
    *                 for z/OS                                     *
    ****************************************************************
    * PROBLEM DESCRIPTION: Although MAX_EXPECTED_ROWS is specified *
    *                      in an unload involving an ORDER clause, *
    *                      Db2 HPU invokes the DFSORT compliant    *
    *                      site default sort program               *
    *                      (if SORTUTIL=SORT) with parameters      *
    *                      meant for the number of records of the  *
    *                      whole table which can lead to undesired *
    *                      overallocation of resources for the     *
    *                      sort process.                           *
    ****************************************************************
    * RECOMMENDATION: Apply the PTF                                *
    ****************************************************************
    MAX_EXPECTED_ROWS ignored for sort invocation if SORTUTIL=SORT
    

Problem conclusion

  • Code has been changed to fix this problem
    

Temporary fix

Comments

APAR Information

  • APAR number

    PH22906

  • Reported component name

    DB2 HI PERF UNL

  • Reported component ID

    5697F4400

  • Reported release

    510

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2020-03-04

  • Closed date

    2020-05-19

  • Last modified date

    2020-06-01

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

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

Modules/Macros

  • INZ$$PRM INZTDSC  INZTVAR  INZUTIB1 INZUTIB2 INZUTILC INZUTILK
    INZUTILL
    

Fix information

  • Fixed component name

    DB2 HI PERF UNL

  • Fixed component ID

    5697F4400

Applicable component levels

  • R510 PSY UI69508

       UP20/05/22 P F005

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:
12 February 2021