PM62042: ABEND04E 00C90101 DSNKFTCH 5004 ERQUAL5004

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

  • A very small timing window during which the index leaf page is
    deleted, but the page has already been marked dirty by one
    thread. So the dirty page is written out while another member
    reuses the page as a non leaf page.
    It renders that a dirty page is written to GBP twice without
    update between in, and leads to page regression.
    

Local fix

  • N/A
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All DB2 for z/OS data sharing users with     *
    *                 indexes.                                     *
    ****************************************************************
    * PROBLEM DESCRIPTION: ABEND04E RC00C90101 DSNKFTCH            *
    *                      ERQUAL5004 occurred during index        *
    *                      access.                                 *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    ABEND04E RC00C90101 DSNKFTCH ERQUAL5004 occurred during index
    access due to an index page regression.  The index page
    regression was introduced by a timing window during a Group
    Buffer pool page access where an update to an index page went
    undetected.
    

Problem conclusion

  • Code has been modified to do additional page update detection
    during Group Buffer pool page access.
    

Temporary fix

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

Comments

APAR Information

  • APAR number

    PM62042

  • 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

    2012-04-09

  • Closed date

    2013-04-17

  • Last modified date

    2013-06-04

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

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

    UK93556 UK93557

Modules/Macros

  •    DSNB1SWS DSNKDLE  DSNKINSL
    

Fix information

  • Fixed component name

    DB2 OS/390 & Z/

  • Fixed component ID

    5740XYR00

Applicable component levels

  • RA10 PSY UK93556

       UP13/05/05 P F305

  • R910 PSY UK93557

       UP13/05/03 P F305

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 #:

PM62042

Modified date:

2013-06-04

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