Fixes are available
8.0.0.8: WebSphere Application Server V8.0 Fix Pack 8
8.5.5.2: WebSphere Application Server V8.5.5 Fix Pack 2
7.0.0.33: WebSphere Application Server V7.0 Fix Pack 33
8.0.0.9: WebSphere Application Server V8.0 Fix Pack 9
8.5.5.3: WebSphere Application Server V8.5.5 Fix Pack 3
7.0.0.35: WebSphere Application Server V7.0 Fix Pack 35
8.5.5.4: WebSphere Application Server V8.5.5 Fix Pack 4
8.0.0.10: WebSphere Application Server V8.0 Fix Pack 10
7.0.0.37: WebSphere Application Server V7.0 Fix Pack 37
8.5.5.5: WebSphere Application Server V8.5.5 Fix Pack 5
8.5.5.6: WebSphere Application Server V8.5.5 Fix Pack 6
8.0.0.11: WebSphere Application Server V8.0 Fix Pack 11
8.5.5.7: WebSphere Application Server V8.5.5 Fix Pack 7
7.0.0.39: WebSphere Application Server V7.0 Fix Pack 39
8.5.5.8: WebSphere Application Server V8.5.5 Fix Pack 8
8.0.0.12: WebSphere Application Server V8.0 Fix Pack 12
8.5.5.9: WebSphere Application Server V8.5.5 Fix Pack 9
7.0.0.41: WebSphere Application Server V7.0 Fix Pack 41
8.5.5.10: WebSphere Application Server V8.5.5 Fix Pack 10
8.5.5.11: WebSphere Application Server V8.5.5 Fix Pack 11
8.0.0.13: WebSphere Application Server V8.0 Fix Pack 13
7.0.0.43: WebSphere Application Server V7.0 Fix Pack 43
8.5.5.12: WebSphere Application Server V8.5.5 Fix Pack 12
8.0.0.14: WebSphere Application Server V8.0 Fix Pack 14
8.5.5.13: WebSphere Application Server V8.5.5 Fix Pack 13
7.0.0.45: WebSphere Application Server V7.0 Fix Pack 45
8.0.0.15: WebSphere Application Server V8.0 Fix Pack 15
7.0.0.45: Java SDK 1.6 SR16 FP60 Cumulative Fix for WebSphere Application Server
7.0.0.35: Java SDK 1.6 SR16 FP1 Cumulative Fix for WebSphere Application Server
7.0.0.37: Java SDK 1.6 SR16 FP3 Cumulative Fix for WebSphere Application Server
7.0.0.39: Java SDK 1.6 SR16 FP7 Cumulative Fix for WebSphere Application Server
7.0.0.41: Java SDK 1.6 SR16 FP20 Cumulative Fix for WebSphere Application Server
7.0.0.43: Java SDK 1.6 SR16 FP41 Cumulative Fix for WebSphere Application Server
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14
8.5.5.15: WebSphere Application Server V8.5.5 Fix Pack 15
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14
8.5.5.17: WebSphere Application Server V8.5.5 Fix Pack 17
8.5.5.20: WebSphere Application Server V8.5.5.20
8.5.5.18: WebSphere Application Server V8.5.5 Fix Pack 18
8.5.5.19: WebSphere Application Server V8.5.5 Fix Pack 19
8.5.5.16: WebSphere Application Server V8.5.5 Fix Pack 16
8.5.5.21: WebSphere Application Server V8.5.5.21
APAR status
Closed as program error.
Error description
Message processing stops when using either Listener Ports or a single JMS Connection with multiple JMS Sessions. The cause is a deadlock. A javacore reveals an ABBA deadlock between JMS Messaging Adapter and J2C similar to: Thread 1 Blocked on: java/util/Collections$SynchronizedSet@0x8387E708 Owned by: "Thread 2" at java/util/Collections$SynchronizedCollection.remove(Collection s.java:463(Compiled Code)) at com/ibm/ejs/jms/JMSManagedSession.removeConnectionEventListener( JMSManagedSession.java:558) at com/ibm/ejs/j2c/MCWrapper.destroy(MCWrapper.java:2037) at com/ibm/ejs/j2c/FreePool.cleanupAndDestroyMCWrapper(FreePool.jav a:756) at com/ibm/ejs/j2c/FreePool.cleanupAndDestroyAllFreeConnections(Fre ePool.java:2574) at com/ibm/ejs/j2c/PoolManager.quiesceIfPossible(PoolManager.java:6 774) at com/ibm/ejs/j2c/ConnectionFactoryDetailsImpl.stop(ConnectionFact oryDetailsImpl.java:442) at com/ibm/ejs/j2c/ConnectionFactoryBuilderServerImpl.freeConnectio nFactory(ConnectionFactoryBuilderServerImpl.java:1439) at com/ibm/ejs/jms/JMSManagedConnection.destroy(JMSManagedConnectio n.java:1177) at com/ibm/ejs/j2c/MCWrapper.destroy(MCWrapper.java:2074) at com/ibm/ejs/j2c/FreePool.cleanupAndDestroyMCWrapper(FreePool.jav a:756) at com/ibm/ejs/j2c/FreePool.returnToFreePool(FreePool.java:508(Comp iledCode)) at com/ibm/ejs/j2c/PoolManager.release(PoolManager.java:2410(Compil edCode)) at com/ibm/ejs/j2c/MCWrapper.releaseToPoolManager(MCWrapper.java:25 95(Compiled Code)) at com/ibm/ejs/j2c/MCWrapper.connectionErrorOccurred(MCWrapper.java :2721) at com/ibm/ejs/j2c/ConnectionEventListener.connectionErrorOccurred( ConnectionEventListener.java:511) at com/ibm/ejs/jms/JMSManagedConnection.connectionErrorOccurred(JMS ManagedConnection.java:1433) at com/ibm/ejs/jms/JMSConnectionHandle.markManagedConnectionAsStale (JMSConnectionHandle.java:929) at com/ibm/ejs/jms/JMSSessionHandle.markManagedObjectsAsStale(JMSSe ssionHandle.java:1539) at com/ibm/ejs/jms/JMSSessionHandle.enlist(JMSSessionHandle.java:10 92) ... Thread 2 Blocked on: java/lang/Object@0x7F024BC0 Owned by: "Thread 1" at com/ibm/ejs/j2c/FreePool.removeMCWrapperFromList(FreePool.java:6 71) at com/ibm/ejs/j2c/FreePool.returnToFreePool(FreePool.java:510(Comp iledCode)) at com/ibm/ejs/j2c/PoolManager.release(PoolManager.java:2410(Compil ed Code)) at com/ibm/ejs/j2c/MCWrapper.releaseToPoolManager(MCWrapper.java:25 95(Compiled Code)) at com/ibm/ejs/j2c/ConnectionEventListener.interactionPending(Conne ctionEventListener.java:1022) at com/ibm/ejs/jms/JMSManagedSession.interactionPending(JMSManagedS ession.java:959) at com/ibm/ejs/jms/JMSManagedSession.enlist(JMSManagedSession.java: 822(Compiled Code)) at com/ibm/ejs/jms/JMSSessionHandle.enlist(JMSSessionHandle.java:10 88) ...
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM WebSphere Application * * Server non-default JMS Messaging * **************************************************************** * PROBLEM DESCRIPTION: Deadlock causes hang in message * * processing. * **************************************************************** * RECOMMENDATION: * **************************************************************** One of the locks involved in the ABBA deadlock was needed because an iteration over a synchronized Set was required.
Problem conclusion
This APAR resolves the problem by using java.concurrent.ConcurrentHashMap to back a concurrent Set. Therefore no explicit synchronization is required. The fix for this APAR is currently targeted for inclusion in fix pack 7.0.0.33, 8.0.0.8 and 8.5.5.2. 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 number
PM93728
Reported component name
WEBS APP SERV N
Reported component ID
5724H8800
Reported release
800
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2013-07-24
Closed date
2013-08-23
Last modified date
2014-05-06
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
R800 PSY
UP
R850 PSY
UP
Document Information
Modified date:
28 April 2022