Fixes are available
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
7.0.0.37: 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
A hung thread message similar to the following will be generated in the SystemOut.log file... [5/14/14 15:38:44:498 CEST] 00000902 ThreadMonitor W WSVR0605W: Thread "WebContainer : 60" (00000430) has been active for 744963 milliseconds and may be hung. There is/are 3 thread(s) in total in the server that may be hung. at java.util.HashMap.put(HashMap.java:374) at com.ibm.ws.cluster.router.selection.UnavailableManagerImpl.markU navailable(UnavailableManagerImpl.java:279) at com.ibm.ws.cluster.router.selection.SelectionManager.handleRemot eException(SelectionManager.java:629) at com.ibm.ws.cluster.router.selection.WLMClientForCommonRouterImpl .handleRemoteException(WLMClientForCommonRouterImpl.java:414) at com.ibm.ws.wlm.client.WLMClient.handleRemoteException(WLMClient. java:237) at com.ibm.rmi.corba.ClientDelegate.invoke(ClientDelegate.java:524) at com.ibm.CORBA.iiop.ClientDelegate.invoke(ClientDelegate.java:123 8) at com.ibm.rmi.corba.ClientDelegate.invoke(ClientDelegate.java:708) at com.ibm.CORBA.iiop.ClientDelegate.invoke(ClientDelegate.java:126 8) at org.omg.CORBA.portable.ObjectImpl._invoke(ObjectImpl.java:484) at test.ibm.some_Stub.create(some_Stub.java:215) at sun.reflect.GeneratedMethodAccessor192.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethod AccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597)
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM WebSphere Application * * Server * **************************************************************** * PROBLEM DESCRIPTION: Hung thread SystemOut messages * * indicating java.util.HashMap thread * * hang in UnavailableManagerImpl * **************************************************************** * RECOMMENDATION: * **************************************************************** Use of java.util.HashMap in UnavailableManagerImpl was not thread safe and led to hung threads. This was updated to implement java.util.ConcurrentHashMap instead to ensure thread safety.
Problem conclusion
HashMap implementation has been updated to be threadsafe. The fix for this APAR is currently targeted for inclusion in fix packs 7.0.0.37, 8.0.0.10 and 8.5.5.5. 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
PI20776
Reported component name
WEBS APP SERV N
Reported component ID
5724H8800
Reported release
700
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2014-06-25
Closed date
2014-10-28
Last modified date
2014-10-28
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
R850 PSY
UP
Document Information
Modified date:
27 April 2022