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IT33216: ABORTING A SESSION HAVING SUSPENDED MSFT XA TRANSACTIONS MAY REPORT MEMORY BLOCK CORRUPTIONS OR TABLESPACE PROBLEMS

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APAR status

  • Closed as program error.

Error description

  • A client application using XA with TMMTSDTC style may suspend
    transaction and resume them on a later timestamp.
    When suspended transactions exists and the application is
    finished by onmode -z, kill -9 ... the session may corrupt
    the memory in the RSAM pool.
    
    Possible Af files are
    
    18:00:52  Logical Log 5421 Complete, timestamp: 0x7be697b4.
    18:00:52  Session completed abnormally. Rolling back tx id 29,
    flags 0x1084899
    18:00:52  Assert Failed: Internal Tblspace error
    18:00:52  IBM Informix Dynamic Server Version 12.10.FC13
    18:00:52   Who: Session(87, user@host, 18422, 0x55f29988)
                    Thread(114, sqlexec, 55ee9e08, 1)
                    File: rspartn.c Line: 124
    18:00:52   Results: Operation Failed
    18:00:52   Action: Please notify IBM Informix Technical Support.
    18:00:52  stack trace for pid 17719 written to
    {DUMPDIR}/af.45aecb4
    18:00:52   See Also: {DUMPDIR}/af.45aecb4
    
    17:52:57  Session completed abnormally. Rolling back tx id 14,
    flags 0x1084899
    17:52:57  Found during mt_shm_free 6, error seen 1 times since
    last print to the log
    17:52:57  Pool 'rsam' (0x55cfc040)
    17:52:57  Bad block header 0x57a48e48
    17:52:57  Assert Warning: Memory block header corruption
    detected in mt_shm_free 6
    17:52:57  IBM Informix Dynamic Server Version 12.10.FC13
    17:52:57   Who: Session(263, user@host, 28201, 0x55f29618)
                    Thread(290, sqlexec, 55ee9528, 1)
                    File: mtshpool.c Line: 2767
    17:52:57   Results: Pool repaired
    17:52:57   Action: Please notify IBM Informix Technical Support.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * Users of Informix Server prior to 12.10.xC15 and 14.10.xC5.  *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to Informix Server 12.10.xC15 (when available) or    *
    * 14.10.xC5.                                                   *
    ****************************************************************
    

Problem conclusion

  • Fixed in Informix Server 12.10.xC15 and 14.10.xC5.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT33216

  • Reported component name

    INFORMIX SERVER

  • Reported component ID

    5725A3900

  • Reported release

    C10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2020-06-16

  • Closed date

    2020-12-07

  • Last modified date

    2020-12-07

  • 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

[{"Line of Business":{"code":"LOB10","label":"Data and AI"},"Business Unit":{"code":"BU029","label":"Software"},"Product":{"code":"SSGU8G","label":"Informix Servers"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"C10"}]

Document Information

Modified date:
08 December 2020