PI89128: NULLPOINTEREXCEPTION WHEN CONNECTING FROM WEBSPHERE V7.0 TO ACTIVEMQ

8.0.0.15: WebSphere Application Server V8.0 Fix Pack 15

APAR status

• Closed as program error.

Error description

• Following exception is logged in the WebSphere Application
  Server
  V7.0 SystemOut.log when connecting to Active MQ:
  J2CA0046E:Method createManagedConnectionWithMCWrapper caught an
  exception during creation of the ManagedConnection for resource
  TopicConnectionFactory, throwing ResourceAllocationException.
  Original exception:
  <=================================>Exception Message -> null
  java.lang.NullPointerException
      at
  com.ibm.ejs.jms.JMSManagedConnection.<init>(JMSManagedConnection
  .java:39
  1)
      at
  com.ibm.ejs.jms.JMSManagedTopicConnection.<init>(JMSManagedTopic
  Connecti
  on.java:74)
      at
  com.ibm.ejs.jms.GenericJMSManagedTopicConnectionFactory.createMa
  nagedCon
  nection(GenericJMSManagedTopicConnectionFactory.java:91)
      at
  com.ibm.ejs.jms.JMSManagedConnectionFactory.createManagedConnect
  ion(JMSM
  anagedConnectionFactory.java:678)
      at
  com.ibm.ejs.j2c.FreePool.createManagedConnectionWithMCWrapper(Fr
  eePool.j
  ava:2086)
      at
  com.ibm.ejs.j2c.FreePool.createOrWaitForConnection(FreePool.java
  :1761)
      at
  com.ibm.ejs.j2c.PoolManager.reserve(PoolManager.java:2636)
      at
  com.ibm.ejs.j2c.ConnectionManager.allocateMCWrapper(ConnectionMa
  nager.ja
  va:1064)
      at
  com.ibm.ejs.j2c.ConnectionManager.allocateConnection(ConnectionM
  anager.j
  ava:701)
      at
  com.ibm.ejs.jms.JMSTopicConnectionFactoryHandle.createTopicConne
  ction(JM
  STopicConnectionFactoryHandle.java:91)
      at
  darwin.pushport.web.PushportReceiver.doGet(PushportReceiver.java
  :55)
  
  The exception is not very helpful in determining the root cause
  as the actual exception is not traced in the above stack.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  WebSphere Application Server users of JMS   *
  ****************************************************************
  * PROBLEM DESCRIPTION: A NullPointerException occurs during    *
  *                      the                                     *
  *                      JMSManagedConnection constructor.       *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  If an Exception occurs during the JMSManagedConnection
  constructor a coding error may cause a NullPointerException to
  occur in the constructor which results in the original
  Exception information being discarded and unavailable for
  problem diagnosis.
  Typically the original Exception occurs due to a configuration
  error while obtaining the real ConnectionFactory from the JMS
  provider the first time a JMS connection for the
  ConnectionFactory is requested.
  The issue is already fixed in WebSphere Application Server
  version 8.5 and later releases.
  

Problem conclusion

• The exception handling in the JMSManagedConnection constructor
  was fixed so that the NullPointerException no longer occurs,
  the original Exception is written to FFDC and is set as the
  cause of the javax.resource.ResourceException thrown from the
  method.  This enables the root cause of the problem to be
  identified.
  
  The fix for this APAR is currently targeted for inclusion in
  fix pack 8.0.0.15.  Please refer to the Recommended Updates
  page for delivery information:
  http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
  

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

  WEBS APP SERV N

• Fixed component ID

  5724H8800

Applicable component levels

• R700 PSY

     UP

• R800 PSY

     UP