IC72660: XMS .NET APPLICATION HANGS WHEN XMSSession.Commit IS ISSUED WHILE ASYNCHRONOUS MESSAGE LISTENER IS PROCESSING MESSAGE

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

• A WebSphere MQ XMS .NET V2.0 CLIENT application hangs when
  it issues XMSSession.Commit or XMSSession.Rollback from
  an asynchronous message consumer thread. This problem
  occurs when MANAGED mode is used by the client application
  for connecting to the queue manager.
  

Local fix

Problem summary

• ****************************************************************
  USERS AFFECTED:
  All users of XMS .Net applications in managed mode. The problem
  only occurs when an Asynchronous consumer is used and the
  asynchronous message listener method issues XMSSession.Commit or
  XMSSession.Rollback.
  
  Platforms affected:
  Windows
  
  ****************************************************************
  PROBLEM SUMMARY:
  There was a locking issues in the asynchronous consumer which
  was causing the XMSSession.Commit or XMSSession.Rollback method
  calls to hang if called from a asynchronous message listener.
  

Problem conclusion

• Proper locking mechanisms have been introduced so that the
  XMSSession.Commit or XMSSession.Rollback methods do not hang.
  
  ---------------------------------------------------------------
  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

• R701 PSY

     UP