IT12492: TEMPORARY QUEUE LEAK ON DELETE OR CLEANUP

APAR status

• Closed as program error.

Error description

• When an application creates a temporary queue, and then calls
  TemporaryQueue.delete(), as shown in the following example:
  
  Connection c = connFactory.createConnection()
  Session s = c.createSession()
  Queue q = s.createTemporaryQueue()
  q.delete()
  
  the handle to the underlying temporary queue on the queue
  manager is not closed and the temporary queue is not deleted.
  

Local fix

Problem summary

• ****************************************************************
  USERS AFFECTED:
  This issue affects users of:
  
  - The IBM MQ V8 classes for JMS.
  - The IBM MQ V8 resource adapter.
  
  who have applications that create temporary queues by calling
  one of the following methods:
  
  - JMSContext.createTemporaryQueue()
  - QueueSession.createTemporaryQueue()
  - Session.createTemporaryQueue()
  
  and then close the temporary queues by calling the method:
  
  - TemporaryQueue.delete()
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  When the methods:
  
  - JMSContext.createTemporaryQueue()
  - QueueSession.createTemporaryQueue()
  - Session.createTemporaryQueue()
  
  are called, the MQ classes for JMS and resource adapter create a
  temporary queue on the queue manager that the application is
  connected to. The handle for the temporary queue is associated
  with the TemporaryQueue object returned to the application.
  
  When the method TemporaryQueue.delete() was called, the MQ
  classes for JMS and resource adapter did not close the handle to
  the temporary queue, or try to delete it. If the application
  created and deleted a large number of temporary queues, then the
  application could eventually receive JMSExceptions containing MQ
  Reason Code 2017 (MQRC_HANDLE_NOT_AVAILABLE).
  

Problem conclusion

• The MQ classes for JMS and resource adapter have been updated to
  ensure that when the method TemporaryQueue.delete() is called,
  the handle to the temporary queue on the queue manager is closed
  and the temporary queue deleted.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v8.0       8.0.0.6
  
  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

• R800 PSY

     UP