IT20175: Probe Ids XC076010 and C0398008 are produced for clients attached to a queue manager during shutdown

APAR status

• Closed as program error.

Error description

• A client application connected to a V8
  distributed  queue manager using SVRCONN
  channels configured with SHARECNV>0,
  can generate FDC files in the client
  side when the queue manager  is shutdown while
  the application is running.
  
  FDC reports error rrcE_PROTOCOL_ERROR,
  probe Id CO398008 and error message
  AMQ9504.  An FDC with Probe Id XC076010
  is also generated.
  

Local fix

• Workaround is to terminate client application prior to shutting
  down the queue manager
  

Problem summary

• ****************************************************************
  USERS AFFECTED:
  All users of IBM MQ client applications that use channels with
  SHARECNV > 0 may be affected by this problem.
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  A logic error within the MQ channel code meant that it was
  possible for a channel process to incorrectly attempt to send a
  notification to a client, after the conversation or connection
  to the client had been terminated, while the queue manager was
  ending. This attempt to communicate over a closed connection
  resulted in the FDC records being generated.
  

Problem conclusion

• The MQ channel logic has been changed to avoid sending
  notifications
  to a client after the channel conversations have been
  ended.
  
  
  
  
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v8.0       8.0.0.12
  v9.1 CD    9.1.2
  
  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 BASE MULTIP

• Fixed component ID

  5724H7251

Applicable component levels