IBM Support

IT17812: Unmanaged .NET application throws type initializer error.

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APAR status

  • Closed as program error.

Error description

  • An unmanaged .NET application using the Redistributable Client
    feature introduced in MQ v8.0.0.4 fails with a "type
    initializer" exception.
    
    Running SimplePublish.exe sample reports following exception :-
    
    Connecting to queue manager.. Exception caught:
    System.TypeInitializationExcepti
    on: The type initializer for 'IBM.WMQ.MQQueueManager' threw an
    exception. ---> S
    ystem.Reflection.TargetInvocationException: Exception has been
    thrown by the tar
    get of an invocation. --->
    System.Reflection.TargetInvocationException: Exceptio
    n has been thrown by the target of an invocation. --->
    System.NullReferenceExcep
    tion: Object reference not set to an instance of an object.
       at IBM.WMQ.Nmqi.NativeManager.InitializeNativeApis(String
    mode)
       --- End of inner exception stack trace ---
       at IBM.WMQ.MQCommonServices..ctor()
       --- End of inner exception stack trace ---
    ..
       at IBM.WMQ.CommonServices.CreateCommonServices()
       at IBM.WMQ.CommonServices.TraceConstructor(String objectId,
    String sccsid)
       at IBM.WMQ.Nmqi.NmqiEnvironment..ctor(NmqiPropertyHandler
    nmqiPropertyHandler
    )
       at IBM.WMQ.Nmqi.NmqiFactory.GetInstance(NmqiPropertyHandler
    properties)
       at IBM.WMQ.MQQueueManager..cctor()
       --- End of inner exception stack trace ---
       at IBM.WMQ.MQQueueManager..ctor(String queueManagerName,
    Hashtable properties
    )
       at SimplePublish.SimplePublish.PutMessages()
       at SimplePublish.SimplePublish.Main(String[] args)
    Sample execution FAILED!
    
    End of SimplePublish Application
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    Users of the IBM MQ .NET Redistributable client
    
    
    Platforms affected:
    Windows
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    The logic to locate the MQ .NET runtime library (amqmdnet.dll)
    when running a .NET application has changed with redistributable
    clients. A coding error within this change meant that the MQ
    .NET client was unable to locate runtime library when a client
    of lower version is installed in the environment.
    

Problem conclusion

  • The MQ .NET redistributable client has been updated to correctly
    locate the runtime library from the client directory when a
    lower version of client is installed.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
    Version    Maintenance Level
    v8.0       8.0.0.7
    v9.0 CD    9.0.2
    v9.0 LTS   9.0.0.1
    
    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

    IT17812

  • Reported component name

    WMQ BASE MULTIP

  • Reported component ID

    5724H7251

  • Reported release

    800

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2016-11-04

  • Closed date

    2016-11-30

  • Last modified date

    2017-06-01

  • 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

    5724H7251

Applicable component levels

  • R800 PSY

       UP

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Document Information

Modified date:
01 June 2017