PQ85560: SPORADIC CONCURRENTMODIFICATIONEXCEPTIONS WHILE DRIVING WEB SERVICES CLIENTS INTO WEBSPHERE APPLICATION SERVER V5.02 Z/OS

 Fixes are available

5.1.1.17: WebSphere Application Server V5.1.1 Cumulative Fix 17 for AIX
5.1.1.17: WebSphere Application Server V5.1.1 Cumulative Fix 17 for HP-UX
5.1.1.19: WebSphere Application Server V5.1.1 Cumulative Fix 19 for Linux
5.1.1.16: WebSphere Application Server V5.1.1 Cumulative Fix 16 for AIX
5.1.1.18: WebSphere Application Server V5.1.1 Cumulative Fix 18 for AIX
5.1.1.18: WebSphere Application Server V5.1.1 Cumulative Fix 18 for HP-UX
5.1.1.18: WebSphere Application Server V5.1.1 Cumulative Fix 18 for Solaris
5.1.1.18: WebSphere Application Server V5.1.1 Cumulative Fix 18 for Windows
5.1.1.18: WebSphere Application Server V5.1.1 Cumulative Fix 18 for Linux
5.1.1.17: WebSphere Application Server V5.1.1 Cumulative Fix 17 for Linux
5.1.1.17: WebSphere Application Server V5.1.1 Cumulative Fix 17 for Solaris
5.1.1.17: WebSphere Application Server V5.1.1 Cumulative Fix 17 for Windows
5.0.2.7: WebSphere Application Server Express 5.0.2 Cumulative Fix 7
5.1.0.5: WebSphere Application Server V5.1.0 Cumulative Fix 5
5.0.2.17: WebSphere Application Server 5.0.2 Cumulative Fix 17 for Solaris
5.0.2.17: WebSphere Application Server 5.0.2 Cumulative Fix 17 for Windows
5.0.2.14: WebSphere Application Server 5.0.2 Cumulative Fix 14 for Solaris
5.1.1.10: WebSphere Application Server V5.1.1 Cumulative Fix 10 for Windows
5.1.1.10: WebSphere Application Server V5.1.1 Cumulative Fix 10 for AIX
5.0.2.14: WebSphere Application Server 5.0.2 Cumulative Fix 14 for Linux
5.1.1.19: WebSphere Application Server V5.1.1 Cumulative Fix 19 for AIX
5.1.1.19: WebSphere Application Server V5.1.1 Cumulative Fix 19 for Windows
5.1.1.9: WebSphere Application Server V5.1.1 Cumulative Fix 9 for Solaris
5.0.2.15: WebSphere Application Server 5.0.2 Cumulative Fix 15 for Windows
5.0.2.15: WebSphere Application Server 5.0.2 Cumulative Fix 15 for Solaris
5.0.2.15: WebSphere Application Server 5.0.2 Cumulative Fix 15 for AIX
5.1.1.9: WebSphere Application Server V5.1.1 Cumulative Fix 9 for AIX
5.0.2.15: WebSphere Application Server 5.0.2 Cumulative Fix 15 for Linux
5.0.2.12: WebSphere Application Server 5.0.2 Cumulative Fix 12
5.0.2.14: WebSphere Application Server 5.0.2 Cumulative Fix 14 for HP-UX
5.0.2.14: WebSphere Application Server 5.0.2 Cumulative Fix 14 for AIX
5.1.1.9: WebSphere Application Server V5.1.1 Cumulative Fix 9 for Windows
5.0.2.17: WebSphere Application Server 5.0.2 Cumulative Fix 17 for HP-UX
5.0.2.17: WebSphere Application Server 5.0.2 Cumulative Fix 17 for AIX
5.1.1.11: WebSphere Application Server V5.1.1 Cumulative Fix 11 for AIX
5.0.2.17: WebSphere Application Server 5.0.2 Cumulative Fix 17 for Linux
5.1.1.10: WebSphere Application Server V5.1.1 Cumulative Fix 10 for HP-UX
5.1.1.10: WebSphere Application Server V5.1.1 Cumulative Fix 10 for Linux
5.1.1.9: WebSphere Application Server V5.1.1 Cumulative Fix 9 for HP-UX
5.1.1.9: WebSphere Application Server V5.1.1 Cumulative Fix 9 for Linux
5.0.2.16: WebSphere Application Server 5.0.2 Cumulative Fix 16 for HP-UX
5.1.1.12: WebSphere Application Server V5.1.1 Cumulative Fix 12 for Windows
5.0.2.16: WebSphere Application Server 5.0.2 Cumulative Fix 16 for Solaris
5.0.2.8: WebSphere Application Server V5.0.2 Cumulative Fix 8
5.0.2.16: WebSphere Application Server 5.0.2 Cumulative Fix 16 for Windows
5.0.2.16: WebSphere Application Server 5.0.2 Cumulative Fix 16 for AIX
5.1.1.11: WebSphere Application Server V5.1.1 Cumulative Fix 11 for Windows
5.1.1.16: WebSphere Application Server V5.1.1 Cumulative Fix 16 for Solaris
5.0.2.18: WebSphere Application Server 5.0.2 Cumulative Fix 18 for Solaris
5.1.1.11: WebSphere Application Server V5.1.1 Cumulative Fix 11 for Linux
5.0.2.18: WebSphere Application Server 5.0.2 Cumulative Fix 18 for Windows
5.0.2.18: WebSphere Application Server 5.0.2 Cumulative Fix 18 for HP-UX
5.0.2.18: WebSphere Application Server 5.0.2 Cumulative Fix 18 for AIX
5.1.1.16: WebSphere Application Server V5.1.1 Cumulative Fix 16 for Windows
5.1.1.14: WebSphere Application Server V5.1.1 Cumulative Fix 14 for Solaris
5.0.2.14: WebSphere Application Server 5.0.2 Cumulative Fix 14 for Windows
5.1.1.12: WebSphere Application Server V5.1.1 Cumulative Fix 12 for AIX
5.1.1.12: WebSphere Application Server V5.1.1 Cumulative Fix 12 for Linux
5.1.1.12: WebSphere Application Server V5.1.1 Cumulative Fix 12 for HP-UX
5.1.1.12: WebSphere Application Server V5.1.1 Cumulative Fix 12 for Solaris
5.1.1.11: WebSphere Application Server V5.1.1 Cumulative Fix 11 for Solaris
5.1.1.13: WebSphere Application Server V5.1.1 Cumulative Fix 13 for AIX
5.1.1.13: WebSphere Application Server V5.1.1 Cumulative Fix 13 for Windows
5.0.2.13: WebSphere Application Server 5.0.2 Cumulative Fix 13
5.1.1.13: WebSphere Application Server V5.1.1 Cumulative Fix 13 for HP-UX
5.1.1.15: WebSphere Application Server V5.1.1 Cumulative Fix 15 for Solaris
5.1.1.13: WebSphere Application Server V5.1.1 Cumulative Fix 13 for Solaris
5.1.1.13: WebSphere Application Server V5.1.1 Cumulative Fix 13 for Linux
5.1.1.14: WebSphere Application Server V5.1.1 Cumulative Fix 14 for AIX
5.1.1.14: WebSphere Application Server V5.1.1 Cumulative Fix 14 for Linux
5.1.1.14: WebSphere Application Server V5.1.1 Cumulative Fix 14 for Windows
5.1.1.15: WebSphere Application Server V5.1.1 Cumulative Fix 15 for Windows
5.1.1: WebSphere Application Server Version 5.1 Fix Pack 1 (Version 5.1.1)
5.0.2.5: WebSphere Application Server 5.0.2 Cumulative Fix 5
5.0.2.18: WebSphere Application Server 5.0.2 Cumulative Fix 18 for Linux
5.1.1.11: WebSphere Application Server V5.1.1 Cumulative Fix 11 for HP-UX
5.1.1.14: WebSphere Application Server V5.1.1 Cumulative Fix 14 for HP-UX
5.0.2.15: WebSphere Application Server 5.0.2 Cumulative Fix 15 for HP-UX
5.0.2.16: WebSphere Application Server 5.0.2 Cumulative Fix 16 for Linux
5.1.1.10: WebSphere Application Server V5.1.1 Cumulative Fix 10 for Solaris
5.1.1.15: WebSphere Application Server V5.1.1 Cumulative Fix 15 for AIX
5.1.1.15: WebSphere Application Server V5.1.1 Cumulative Fix 15 for HP-UX
5.1.1.16: WebSphere Application Server V5.1.1 Cumulative Fix 16 for HP-UX
5.1.1.16: WebSphere Application Server V5.1.1 Cumulative Fix 16 for Linux
5.1.1.15: WebSphere Application Server V5.1.1 Cumulative Fix 15 for Linux
5.1.1.19: WebSphere Application Server V5.1.1 Cumulative Fix 19 for HP-UX



APAR status
Closed as program error.

Error description
Customers may see sporadic ConncurrentModificationExceptions
while driving multiple WebServices client requests into
WebSphere Application Server v5.02 for z/OS. Stack trace:
java.util.ConcurrentModificationException: concurrent access to
HashMap attempted by Thread■WebSphere t=008d2e88,5,main
.at java.util.HashMap.onExit(HashMap.java(Compiled Code))
.at java.util.HashMap.rehash(HashMap.java(Inlined Compiled Code)
.at java.util.HashMap.put(HashMap.java(Compiled Code))
.at com.ibm.ws.webservices.engine.description.TypeDesc.getFieldN
.at com.ibm.ws.webservices.engine.encoding.ser.BeanDeserializer.
.at com.ibm.ws.webservices.engine.events.DEventProcessor.onSimpl
.at com.ibm.ws.webservices.engine.encoding.ser.BeanDeserializer.
.at com.ibm.ws.webservices.engine.events.P2DConverter.flush(P2DC
.at com.ibm.ws.webservices.engine.events.P2DConverter.endElement
.at sax.SAX2DocumentEntityParserBase.endElementAction(Unknown So
.at util.DocumentEntityParserBase.endElementEvent(Unknown Source
.at com.ibm.xml.b2b.scan.latin.LatinWFCDocumentScanner.scanEndEl
.at com.ibm.xml.b2b.scan.latin.LatinWFCDocumentScanner.scanConte
.at com.ibm.xml.b2b.scan.latin.LatinWFCDocumentScanner.scanDocum
.at sax.latin.LatinWFCSAX2DocumentEntityParser.scanDocument(Unkn
.at util.DocumentEntityParserBase.parse(Unknown Source)
.at sax.SAX2DocumentEntityParserBase.parseEntity(Unknown Source)
.at sax.SAX2DocumentEntityParserBase.parse(Unknown Source)
.at javax.xml.parsers.SAXParser.parse(Unknown Source)
.at com.ibm.ws.webservices.engine.encoding.DeserializationContex
.at com.ibm.ws.webservices.engine.SOAPPart.getAsSOAPEnvelope(SOA
.at com.ibm.ws.webservices.engine.Message.getSOAPEnvelope(Messag
.at com.ibm.ws.webservices.engine.handlers.jaxrpc.JAXRPCSOAPHand
.at com.ibm.ws.webservices.engine.handlers.jaxrpc.JAXRPCSOAPHand
8)
.at com.ibm.ws.webservices.engine.handlers.jaxrpc.JAXRPCHandler$
.at com.ibm.ws.webservices.engine.PivotHandlerWrapper.invoke(Piv
.at com.ibm.ws.webservices.engine.handlers.WrappedHandler.invoke
.at com.ibm.ws.webservices.engine.PivotHandlerWrapper.invoke(Piv
.at com.ibm.ws.webservices.engine.PivotHandlerWrapper.invoke(Piv
.at com.ibm.ws.webservices.engine.WebServicesEngine.invoke(WebSe
.at com.ibm.ws.webservices.engine.transport.http.WebServicesServ
.at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
.at com.ibm.ws.webservices.engine.transport.http.WebServicesServ
.at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
.at com.ibm.ws.webcontainer.servlet.StrictServletInstance.doServ
.at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet._serv
.at com.ibm.ws.webcontainer.servlet.ServicingServletState.servic
Local fix Problem summary
****************************************************************
* USERS AFFECTED: WebSphere Application Server for z/OS        *
*                 users of web services                        *
****************************************************************
* PROBLEM DESCRIPTION: Sporadic                                *
*                      ConcurrentModificationExceptions        *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
Sporadic ConcurrentModificationExceptions while driving web
services clients into WebSphere Application Server V5.02 Z/OS
Problem conclusion
The fix for 5.* is to change the implementation
to use Hashtable(s) in TypeDesc.  This may degrade performance,
but there is no other feasible solution.
Temporary fix Comments
APAR information
APAR number PQ85560
Reported component name WAS BASE 5.0
Reported component ID 5630A3600
Reported release 00W
Status CLOSED PER
PE NoPE
HIPER NoHIPER
Special Attention NoSpecatt
Submitted date 2004-03-04
Closed date 2004-03-29
Last modified date 2004-03-29

APAR is sysrouted FROM one or more of the following:
PQ84530

APAR is sysrouted TO one or more of the following:

Modules/Macros
websrvce          

Publications Referenced

Fix information

Applicable component levels
R003 PSY    UP
R00A PSY    UP
R00H PSY    UP
R00I PSY    UP
R00P PSY    UP
R00S PSY    UP
R00W PSY    UP
R103 PSY    UP
R10A PSY    UP
R10H PSY    UP
R10I PSY    UP
R10P PSY    UP
R10S PSY    UP
R10W PSY    UP


Document Information


Product categories: Software > Application Servers > Distributed Application & Web Servers > WebSphere Application Server > General
Operating system(s):
Software version: 00W
Software edition:
Reference #: PQ85560
IBM Group: Software Group
Modified date: Mar 29, 2004