IT17392: WINDOWS .NET CLIENT LEAKS MEMORY WHEN USING CCDT WITH QUEUE MANAGER GROUPS TO CONNECT TO A QUEUE MANAGER.

APAR status

• Closed as program error.

Error description

• The memory leak is seen only when queue manager groups in the
  Client Channel Definition Table (CCDT) file are used in a .NET
  application. The leak is not seen when
  the connection is established to a single queue manager using
  a CCDT. The leak is majorly seen in MQChannelEntry and
  MQChannelDefinition.
  

Local fix

Problem summary

• ****************************************************************
  USERS AFFECTED:
  This issue affects users who have defined queue manager groups
  in a CCDT file, and are using the CCDT file with a .NET
  application in managed mode
  
  
  Platforms affected:
  Windows
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  The MQ .NET code allocated a data structure for all the channels
  in the group for every connection, however an omission in the
  disconnection logic failed to clean up these structures.
  

Problem conclusion

• The MQ .NET code has been modified to clear up the data
  structures for the CCDT entries on disconnection.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v7.5       7.5.0.8
  v8.0       8.0.0.7
  v9.0 CD    9.0.3
  v9.0 LTS   9.0.0.2
  
  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

  WEBSPHERE MQ 7.

• Fixed component ID

  5724H7240

Applicable component levels