Fixes are available
APAR status
Closed as program error.
Error description
The Java Message Service (JMS) client application receives a message using asynchronous delivery under a transacted session. It encounters a NullPointerException, and an FDC is generated with the following Exception stack: Exception :- ExceptionDepth is 2 Exception :- Cause:1 :- java.lang.NullPointerException StackTrace:1 :- java.lang.NullPointerException at com.ibm.msg.client.wmq.v6.jms.internal.MQMessageConsumer. commitIfRequired(Unknown Source) at com.ibm.msg.client.wmq.v6.jms.internal.MQMessageConsumer. receiveAsync(Unknown Source)
Local fix
Problem summary
**************************************************************** USERS AFFECTED: This issue affects WebSphere MQ V7 classes for JMS applications that connect to a version 6 queue manager and receive messages asynchronously using Message Listeners. Platforms affected: All Distributed (iSeries, all Unix and Windows) +Java **************************************************************** PROBLEM SUMMARY: The NullPointerException occurred if the Message Listener thread was processing a message asynchronously at the same time as another application thread tried to stop the Listener. The stop operation removed the Listener's reference to the JMS Session used to process the message before the message processing had completed. This led to a NullPointerException when the Message Listener thread came to commit the message it had just processed using its JMS Session.
Problem conclusion
The stop operation no longer removes the Listener's reference to the JMS Session it is using. This allows any outstanding message processing to complete before the Message Listener is stopped. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: v7.0 Platform Fix Pack 7.0.1.2 -------- -------------------- Windows U200316 AIX U829807 HP-UX (PA-RISC) U829678 HP-UX (Itanium) U829681 Solaris (SPARC) U829806 Solaris (x86-64) U829680 iSeries tbc_p700_0_1_2 Linux (x86) U829677 Linux (x86-64) U829676 Linux (zSeries) U829682 Linux (Power) U829679 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 number
IC64755
Reported component name
WMQ WINDOWS V7
Reported component ID
5724H7220
Reported release
700
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2009-11-20
Closed date
2009-11-30
Last modified date
2009-12-16
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
R700 PSY
UP
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Document Information
Modified date:
31 March 2023