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IC74090: CRASH RECOVERY INCORRECTLY UPDATES ACTIVE LOG FILES CORRUPTING THEM

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • With OVERFLOWLOGPATH set and infinite logging enabled
    (LOGSECOND=-1) DB2 fails to successfully finish crash recovery.
    
    If DB2 needs log files that have been archived to perform crash
    recovery it will retrieve them to the OVERFLOWLOGPATH. During
    crash recovery DB2 will check only the OVERFLOWLOGPATH for log
    files missing any in the active log path thus ending the forward
    (redo) phase prematurely.
    
    The switch from redo to undo phase will result in the incorrect
    update to the active log files.
    It is only after the switch that DB2 detects the premature end
    of the forward phase aborting recovery. Once the files have been
    incorrectly updated further attempts at crash recovery are not
    possible.
    

Local fix

  • n/a
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * ALL users with OVERFLOWLOGPATH set and infinite logging      *
    * enabled.                                                     *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Problem Description above.                               *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to DB2 Version 9.7 Fix Pack 4                        *
    ****************************************************************
    

Problem conclusion

  • First fixed in DB2 Version 9.7 Fix Pack 4
    

Temporary fix

Comments

APAR Information

  • APAR number

    IC74090

  • Reported component name

    DB2 FOR LUW

  • Reported component ID

    DB2FORLUW

  • Reported release

    970

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-01-25

  • Closed date

    2011-05-01

  • Last modified date

    2011-05-01

  • 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

    DB2 FOR LUW

  • Fixed component ID

    DB2FORLUW

Applicable component levels

  • R970 PSN

       UP



Document information

More support for: DB2 for Linux, UNIX and Windows

Software version: 9.7

Reference #: IC74090

Modified date: 01 May 2011