IBM Support

IT02647: ENGINE CRASHES DURING AUTO INDEX BUILD IF SHMTOTAL IS HIT AND IFTEMPORARY DBSPACE USES NONDEFAULT PAGESIZE

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APAR status

  • Closed as program error.

Error description

  • Your Informix instance uses temporary dbspaces of non-default
    page size. On execution of a query which uses auto-index access
    plan Informix engine crashes with Assert Failure similar to the
    following:
    
    
    05:54:24  Assert Failed: Page Check Error in next_scan:bad data
    page
    05:54:24   Who: Session(27, dmitriyr@samson-ifx1, 10420436,
    700000020399288)
                    Thread(91, xchg_2.0, 70000002035e418, 1)
                    File: rsdebug.c Line: 1080
    05:54:24   Results: Possible inconsistencies in
    'tdb2:"dmitriyr"._temptable'
    05:54:24   Action: Run 'oncheck -cD 27262978'
    05:54:24  Raw hex dump of stack located in
    /sqldists/11.50.FC9W3/tmp/af.443bbf0.rawstk
    05:54:24  Stack for thread: 91 xchg_2.0
    
    The stack printed in the af.* file is:
    
    afstack
    afhandler
    bffail
    next_scan
    prod_loop1
    producer_thread
    startup
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * extreme low memory                                           *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Update to IDS-11.50.xC10                                     *
    ****************************************************************
    

Problem conclusion

  • Problem Fixed In IDS-11.50.xC10
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT02647

  • Reported component name

    INFORMIX SERVER

  • Reported component ID

    5725A3900

  • Reported release

    B50

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2014-06-18

  • Closed date

    2017-06-09

  • Last modified date

    2017-06-09

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

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

Fix information

  • Fixed component name

    INFORMIX SERVER

  • Fixed component ID

    5725A3900

Applicable component levels

  • RA10 PSN

       UP

  • RA10 PSY

       UP

  • RB10 PSN

       UP

  • RB10 PSY

       UP

  • RB50 PSN

       UP

  • RB50 PSY

       UP

  • RB70 PSN

       UP

  • RB70 PSY

       UP

  • RC10 PSN

       UP

  • RC10 PSY

       UP



Document information

More support for: Informix Servers

Software version: B50

Reference #: IT02647

Modified date: 09 June 2017


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