IBM Support

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

A fix is available

Fix Pack 8.0.0.1 for WebSphere MQ V8.0

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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":"LOB45","label":"Automation"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSFKSJ","label":"WebSphere MQ"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.5"}]
              

                          

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            24 September 2021
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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