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PI77368: SQL GOT ABEND WITH DSNKTRAV 2024 BECAUSE AN INDEX MANAGER DID NOT REFRESH OLD RETRAVERSE STACK INFORMATION SET BEFORE LOAD

A fix is available

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APAR status

  • Closed as program error.

Error description

  • SQL got abend with DSNKTRAV 2024 because an index manager did
    not refresh old retraverse stack information set before load
    replace. SSB_NL_PG and MSAXSPG(2) still had bigger page number
    than page set boundary (PB0HURP) because the page set shrank by
    the load replace.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All DB2 for z/OS V12 index users that                        *
    * specify the RELEASE(DEALLOCATE) bind                         *
    * option.                                                      *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * SQL got an abend with DSNKTRAV                               *
    * ERQUAL2024 after a LOAD REPLACE job                          *
    * reduced the size of the index leading                        *
    * to the abend.                                                *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Apply corrective PTF when available                          *
    ****************************************************************
    The module DSNKTRAV abended because previously stored access
    information was no longer valid due to a LOAD REPLACE that
    reduced the size of the index.  The bind option
    RELEASE(DEALLOCATE) allows access information to be retained
    after commit, which in this case kept information that
    described a larger index than what was left after the LOAD
    REPLACE completed.  The access information listed a page
    value that was outside the boundary of the index causing the
    abend.
    
    The corresponding V10 and V11 APAR is:  PI76711
    

Problem conclusion

  • Code in module DSNKTRAV has been modified to tolerate accessing
    an index page that is not within the boundary of the current
    index.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI77368

  • Reported component name

    DB2 OS/390 & Z/

  • Reported component ID

    5740XYR00

  • Reported release

    C10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-02-28

  • Closed date

    2017-04-21

  • Last modified date

    2017-06-02

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

    PI76711

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

    UI46651

Modules/Macros

  • DSNKTRAV
    

Fix information

  • Fixed component name

    DB2 OS/390 & Z/

  • Fixed component ID

    5740XYR00

Applicable component levels

  • RC10 PSY UI46651

       UP17/05/09 P F705

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:
02 June 2017