IC70822: WebSphere MQ .NET application terminates unexpectedly often after a series of exceptions.

WebSphere MQ V7.0 Fix Pack 7.0.1.5
WebSphere MQ V7.0.1 for i5/OS Fix Pack 7.0.1.5

APAR status

• Closed as program error.

Error description

• WebSphere MQ .NET application running on Windows 2003 / 2008
  terminates unexpectedly with an access violation in
  amqxcs2.dll, often after a specific number of MQExceptions
  have been caught. The NMQI class causing the exceptions seems
  irrelevant.
  
  A Microsoft Windows dialog box appears with the following
  problem signature:
  
    Problem Event Name: APPCRASH
    Application Name: your_mq_client_app.exe
    Application Version: 1.0.0.0
    Application Timestamp: 4c65b77e
    Fault Module Name: MSVCR80.dll
    Fault Module Version: 8.0.50727.3053
    Fault Module Timestamp: 4889d619
    Exception Code: c0000005
    Exception Offset: 00011733
    OS Version: 6.0.6001.2.1.0.274.10
    Locale ID: 1033
    Additional Information 1: d75c
    Additional Information 2: a440d5025d98c8afd950784b5c53ce61
    Additional Information 3: a0c0
    Additional Information 4: 4bd33c35b3b1f78e475f38b93caad055
  

Local fix

Problem summary

• ****************************************************************
  USERS AFFECTED:
  All users of applications which use WebSphere MQ .Net classes
  and interfaces.
  
  Platforms affected:
  Windows
  
  ****************************************************************
  PROBLEM SUMMARY:
  WebSphere MQ .Net code uses exceptions and try-catch blocks to
  report errors and process errors. In some cases where an
  exception was caught trace buffer space previously acquired was
  not correctly released. After a series of exceptions trace data
  overflows the buffer usually resulting in an access violation.
  

Problem conclusion

• Code was checked and modified to correct all of the instances
  of the problem that were found. However, it is possible that
  other instances still remain.
  
  | MDVREGR 7.0-WS-MQ-Windows-RP0001          |
  | MDVREGR 7.0.1-WS-MQ-Windows-FP0001        |
  | MDVREGR 7.0.1-WS-MQ-Windows-FP0002        |
  | MDVREGR 7.0.1-WS-MQ-Windows-FP0003        |
  | MDVREGR 7.0.1-WS-MQ-Windows-FP0004        |
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
                     v7.0
  Platform           Fix Pack 7.0.1.5
  --------           --------------------
  Windows            U200324
  
  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 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