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IC80618: RARE CONDITION COULD CAUSE A THREADSAFE FENCED ROUTINE REQUEST TO HANG

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • Under a rare condition when executing threadsafe fenced
    routines, the communication between the agent and the fenced
    mode process could be out of sync, which leads to a hang in the
    agent while it is holding the ipcLatch. This condition can only
    happen when the routine is fenced, and threadsafe.
    
    Agent's stack should look similar to below:
    
    semop
    sqloSSemP
    sqlccipcrecv
    sqlccrecv
    sqlerMasterThreadReq
    sqlerGetFmpThreadEntry
    

Local fix

  • n/a
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * ALL                                                          *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * Without this APAR, customer is exposed to the issue as       *
    * described in the "ERROR DESCRIPTION" section.                *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to DB2 Version 9.7, Fixpack 6.                       *
    ****************************************************************
    

Problem conclusion

  • First fixed in DB2 Version 9.7, Fixpack 6.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IC80618

  • 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

    2011-12-29

  • Closed date

    2012-07-18

  • Last modified date

    2012-07-18

  • 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 PSY

       UP



Document information

More support for: DB2 for Linux, UNIX and Windows

Software version: 9.7

Reference #: IC80618

Modified date: 18 July 2012