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PI53472: Thread safety defect in Unit of Work manager initialisation

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APAR status

  • Closed as program error.

Error description

  • A thread safety defect was found in the WebSphere
    Application Server Unit of Work manager initialisation code.
    This issue could cause unpredictable behaviour and
    apparently random errors out of the Unit of Work code.
    
    This is an extremely low-probability issue. If it does
    occur, it will be very shortly after server startup.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server Liberty Profile                      *
    ****************************************************************
    * PROBLEM DESCRIPTION: Thread safety defect in WebSphere       *
    *                      Application Server Unit of Work manager *
    *                      initialisation                          *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    A thread safety defect was found in the WebSphere Application
    Server Unit of Work manager initialisation code. This issue
    could cause unpredictable behaviour and apparently random errors
    out of the Unit of Work code.
    
    This is an extremely low-probability issue. If it does occur, it
    will be very shortly after server startup.
    

Problem conclusion

  • Initialisation of the Unit of Work Manager was incorrectly
    synchronized, temporarily allowing multiple managers to exist,
    and/or the use of a partially initialized manager in the first
    few requests after startup. This synchronization has been
    corrected.
    
    The fix for this APAR is currently targeted for inclusion in fix
    pack 8.5.5.9.  Please refer to the Recommended Updates page for
    delivery information:
    http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI53472

  • Reported component name

    WAS LIBERTY COR

  • Reported component ID

    5725L2900

  • Reported release

    855

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2015-12-02

  • Closed date

    2015-12-16

  • Last modified date

    2015-12-16

  • 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

    WAS LIBERTY COR

  • Fixed component ID

    5725L2900

Applicable component levels

  • R855 PSY

       UP

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Document Information

Modified date:
28 April 2022