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PK30548: INCORRECT CALCULATION FOR WORKLOAD SHARING OR ABEND0C9 DSNTTTC WHEN IBM ZIIP ENABLED (W PK27578 LEVEL) 06/09/25 PTF PECHANGE

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

  • Incorrect calculation for workload sharing or possibly ABEND0C9
    in DSNTTMGR DSNTTTC when IBM System Z9 Integrated D/T2094
    Information Processor (IBM ZIIP FLAG is enabled) for CP or
    SYSPLEX parallelism release preparation level (at PK17422,
    PK27578 pe).
    The zIIP hardware does NOT have to be present.
    Create enclave failures seen in dump(s).
    KEYWORD: ZIIP/K
    *************************************************
    Additional symptoms and keywords:
      0C4 RC00000010 DSNTTTC +0C1E , S013E link stack entry with
      EB -> EB. ABND04E DSNTTTC +0D5A, ABND0C9 DSNTTTC +0AE0
      ABND0C4 RC11 DSNTTTC +0C3E also reported by customers
      for Parallel Create Task.  Check if failing application was
      bound with Degree=Any, query referencing a remote table at a
      remove server and abend occurs at the remote server.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All DB2 users of query parallelism with zIIP *
    *                 processors enabled.                          *
    ****************************************************************
    * PROBLEM DESCRIPTION: ABEND0C4 RC00000010 at                  *
    *                      DSNTTMGR.DSNTTTC +0C1E                  *
    *                      or                                      *
    *                      ABEND04E RC00E30001 at                  *
    *                      DSNTTMGR.DSNTTTC +0D5A                  *
    *                      or                                      *
    *                      ABEND0C9 RC00000009 at                  *
    *                      DSNTTMGR.DSNTTTC +0AE0                  *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    When a query is run under query parallelism with zIIP processors
    enabled and available, DB2 uses the incorrect information for
    WLM enclave classification, causing the reported abend.
    

Problem conclusion

  • DB2 code has been modified to correctly classify and create a
    WLM enclave for queries running under parallelism with zIIP
    processors enabled and available.
    
    Additional Keyword: SQLPARALLELISM SQLCPUP
    D/T2094
    

Temporary fix

Comments

APAR Information

  • APAR number

    PK30548

  • Reported component name

    DB2 OS/390 & Z/

  • Reported component ID

    5740XYR00

  • Reported release

    810

  • Status

    CLOSED PER

  • PE

    YesPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2006-08-25

  • Closed date

    2006-11-21

  • Last modified date

    2008-11-18

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

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

    UK19937

Modules/Macros

  • DSNDTMQE DSNTTTC
    

Fix information

  • Fixed component name

    DB2 OS/390 & Z/

  • Fixed component ID

    5740XYR00

Applicable component levels

  • R810 PSY UK19937

       UP06/11/23 P F611

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

Product categories:

Software

Data Management

Data Servers (Database Management Systems)

DB2 for z/OS


Software version:

810


Reference #:

PK30548


IBM Group:

Software Group


Modified date:

2008-11-18

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