IBM Support

IT03551: WMQ V7.5: .NET APPLICATION FAILS TO CONNECT TO QUEUE MANAGER WITH RC=2232 (MQRC_UNIT_OF_WORK_NOT_STARTED).

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APAR status

  • Closed as program error.

Error description

  • An .NET application attempts to connect and put to a queue
    manager, and fails reporting return code 2232
    (MQRC_UNIT_OF_WORK_NOT_STARTED).
    WebSphere MQ trace of the .NET application process shows the
    following:
    IBM.WMQ.Nmqi.NmqiException
    Message: Exception of type 'IBM.WMQ.Nmqi.NmqiException' was
    thrown.
    StackTrace:
       at IBM.WMQ.Nmqi.ManagedHconn.CheckUOWNotMixed(Int32 Opts,
    Int32 mqOp)
       at IBM.WMQ.MQFAP.TransactionCheck(ManagedHconn hconn, Int32
    options, Int32 operation)
       at IBM.WMQ.MQFAP.MQPUT(Hconn hConn, Hobj hObj,
    MQMessageDescriptor& mqmd, MQPutMessageOptions& mqpmo, Int32
    sbLength, Byte■
    .
    --}! MQDestination.Put(MQMessage,MQPutMessageOptions)
    (rc=MQRC_UNIT_OF_WORK_NOT_STARTED)
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    Users with WebSphere MQ .Net applications that use distributed
    transactions. The transactions may or may not be coordinating
    the MQ operations.
    
    
    Platforms affected:
    Windows
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    Implementation of the WebSphere MQ .Net transaction support
    incorrectly assumed that all messages would be managed under
    syncpoint.
    

Problem conclusion

  • Code design was corrected.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
    Version    Maintenance Level
    v7.5       7.5.0.5
    v8.0       8.0.0.1
    
    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

    IT03551

  • Reported component name

    WMQ BASE MULTIP

  • Reported component ID

    5724H7241

  • Reported release

    750

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2014-08-01

  • Closed date

    2014-09-01

  • Last modified date

    2014-09-02

  • 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 BASE MULTIP

  • Fixed component ID

    5724H7241

Applicable component levels

  • R750 PSY

       UP

[{"Line of Business":{"code":"LOB36","label":"IBM Automation"},"Business Unit":{"code":"BU053","label":"Cloud \u0026 Data Platform"},"Product":{"code":"SSFKSJ","label":"WebSphere MQ"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.5"}]

Document Information

Modified date:
24 September 2021