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PH68512: CPU consumption increase after Db2 HPU maintenance

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

  • The Db2 HPU step CPU time consumption noticeably increases after
    a Db2 HPU maintenance.
    
    This occurs if the following condition is fulfilled:
    - the maintenance is :
       - from Db2 HPU 5.1 before UI97393 application or Db2 HPU 5.2
         before application UI97541
       - to Db2 HPU 5.1 after UI97393 application or Db2 HPU 5.2
         after application UI97541 or Db2 HPU 6.1
    - zIIP processing is disabled
    

Local fix

  • Enable zIIP processing if applicable
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: Users of Db2 High Performance Unload for     *
    *                 z/OS                                         *
    ****************************************************************
    * PROBLEM DESCRIPTION: The Db2 HPU step CPU time consumption   *
    *                      noticeably increases after a Db2 HPU    *
    *                      maintenance.                            *
    *                                                              *
    *                      This occurs if the following condition  *
    *                      is fulfilled:                           *
    *                      - the maintenance is :                  *
    *                         - from Db2 HPU 5.1 before UI97393    *
    *                           application or Db2 HPU 5.2 before  *
    *                           application UI97541                *
    *                         - to Db2 HPU 5.1 after UI97393       *
    *                           application or Db2 HPU 5.2 after   *
    *                           application UI97541 or Db2 HPU 6.1 *
    *                      - zIIP processing is disabled           *
    *                                                              *
    *                      Local fix:                              *
    *                                                              *
    *                      Enable zIIP processing if applicable    *
    ****************************************************************
    * RECOMMENDATION: Apply the PTF                                *
    ****************************************************************
    CPU consumption increase after Db2 HPU maintenance
    

Problem conclusion

  • Code has been changed to fix this problem
    

Temporary fix

Comments

APAR Information

  • APAR number

    PH68512

  • Reported component name

    DB2 HI PERF UNL

  • Reported component ID

    5697F4400

  • Reported release

    520

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2025-10-14

  • Closed date

    2025-11-25

  • Last modified date

    2025-11-30

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

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

Modules/Macros

  • INZUTILK
    

Fix information

  • Fixed component name

    DB2 HI PERF UNL

  • Fixed component ID

    5697F4400

Applicable component levels

  • R520 PSY UO05888

       UP25/11/27 P F511

  • R610 PSY UO05904

       UP25/11/27 P F511

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:
30 November 2025