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IC60879: Unable to load mqax200.dll on MQ V7 Client only install

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APAR status

  • Closed as program error.

Error description

  • When an MQAX application is run on a WMQ V7 client only install,
    the following error is reported:
    LoadLibrary("mqax200.dll") failed - The specified module could
    not be found.
    Additional Symptoms: MQAXTriv sample VB application fails with
    "Automation Error: The specified module could not be found".
    Then gets a VB Run-time error '91' "Object variable or With
    Block variable not set".
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    All users of WMQ V7 client only installations.
    
    Platforms affected:
    Windows
    
    ****************************************************************
    PROBLEM SUMMARY:
    When an MQAX application is run on a WMQ V7 client only install,
    the following error is reported:
    LoadLibrary("mqax200.dll") failed - The specified module could
    not be found.
    
    In WMQ Version 7, the ActiveX support library has been
    mistakenly linked explicitly with the server library amqzst.dll.
    This results in the above mentioned error when a client only
    installation attempts to use the ActiveX support as the
    respective library is not present.
    

Problem conclusion

  • The code change ensures that either server or client library is
    dynamically loaded when attempting to load the module
    mqax200.dll. This now causes the respective module to be loaded
    successfully.
    
    Documentation corrections will also be made to the following
    topics when using an environment variable to specify the
    library that mqax200.dll should load.
    
     - Preparing and running Microsoft Transaction Server
    applications
     - AccessQueueManager method
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
    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

    IC60879

  • Reported component name

    WMQ WINDOWS V7

  • Reported component ID

    5724H7220

  • Reported release

    700

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2009-04-22

  • Closed date

    2009-04-30

  • Last modified date

    2011-04-12

  • 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

  • R700 PSY

       UP

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Document Information

Modified date:
12 April 2011