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IC80557: XMS .NET CLIENT REPORTS UNHANDLED EXCEPTION AFTER NETWORK ERROR CLOSES CONNECTION AND IS UNABLE TO RECOVER.

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APAR status

  • Closed as program error.

Error description

  • An XMS .NET 2.x/MQ client v7.0.1 application was not able to
    recover after a network error. The queue manager reported
    AMQ9208 with TCP/IP return code 73 - ECONNRESET followed by
    AMQ9999 error message. The XMS .NET application crashes and
    needs to be restarted.
    Message stack shows:
    
    2011-10-17.15.50.17.202897 ServerName-1384910 8216-10016 Error
    [00000000-0000-0000-0000-000000000000#MessageDistributor.
    CurrentDomain_UnhandledException#: Unhandled Exception
    OccuredException
    Recd Msg:An existing connection was forcibly closed by the
    remote host at System.Net.Sockets.Socket.Send(Byte[] buffer,
    Int32 offset, Int32 size, SocketFlags socketFlags)
    at IBM.WMQ.MQTCPConnection.SendData(Byte[] bytes, Int32 offset,
    Int32 length)
    at IBM.WMQ.MQFAPConnection.SendData(Byte[] bytes, Int32 offset,
    Int32 length, Int32 maxlength)
    
    There is no return code back to XMS reporting a connection
    broken so the application is not able to recover.
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    XMS users experiencing network problems between clients and
    queue managers.
    
    Platforms affected:
    Windows
    
    ****************************************************************
    PROBLEM SUMMARY:
    Following a socket exception, as other connections on the same
    socket were informed and marked as broken, any further
    exceptions were not handled and could bring down the
    application process.
    

Problem conclusion

  • Failure notification was modified such that all exceptions were
    caught and checked. Following the checks, only appropriate
    failures are passed on to the exception listener.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
                       v7.0
    Platform           Fix Pack 7.0.1.9
    --------           --------------------
    Windows            U200337
    
    The latest available maintenance can be obtained from
    'WebSphere MQ Recommended Fixes'
    http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037
    
    If the maintenance level is not yet available information on
    its planned availability can be found in 'WebSphere MQ
    Planned Maintenance Release Dates'
    http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309
    ---------------------------------------------------------------
    

Temporary fix

Comments

APAR Information

  • APAR number

    IC80557

  • Reported component name

    WMQ WINDOWS V7

  • Reported component ID

    5724H7220

  • Reported release

    701

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-12-21

  • Closed date

    2012-04-30

  • Last modified date

    2012-04-30

  • 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

    WMQ WINDOWS V7

  • Fixed component ID

    5724H7220

Applicable component levels

  • R701 PSY

       UP

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Document Information

Modified date:
30 April 2012