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PI76711: 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 V10 and V11 index users     *
    *                 that specify the RELEASE(DEALLOCATE) bind    *
    *                 option.                                      *
    ****************************************************************
    * PROBLEM DESCRIPTION: SQL got an abend with DSNKTRAV:2024     *
    *                      after a LOAD REPLACE job reduced the    *
    *                      size of the index leading to the abend. *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    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    information was no longer valid due to a LOAD REPLACE that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 V12 APAR is:  PI77368
    

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

    PI76711

  • Reported component name

    DB2 OS/390 & Z/

  • Reported component ID

    5740XYR00

  • Reported release

    A10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-02-15

  • Closed date

    2017-04-26

  • Last modified date

    2017-06-02

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

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

    PI77368 UI46761 UI46762

Modules/Macros

  •    DSNKTRAV
    

Fix information

  • Fixed component name

    DB2 OS/390 & Z/

  • Fixed component ID

    5740XYR00

Applicable component levels

  • RA10 PSY UI46761

       UP17/05/16 P F705

  • RB10 PSY UI46762

       UP17/05/16 P F705

Fix is available

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Document information

More support for: DB2 for z/OS

Software version: A10

Reference #: PI76711

Modified date: 02 June 2017


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