Unmarshalling error when invoking a remote call in weblogic 9.1/jdk 1.5.

Hi,
We are trying to upgrade the weblogic from 7.1 to 9.1. I am getting the following error "java.lang.ClassNotFoundException: Failed to load class <b>void</b> ", when a remote method whose return type is void is invoked. Also I am using jdk 1.5.0_04. Any hints on what might be wrong here is appreciated. I have attached the stack trace below.
thanks
Sridhar Sidda
;;---------Stack Trace ----------------------------
Caused by: java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is: java.lang.ClassNotFoundException: Failed to load class void at weblogic.rjvm.ResponseImpl.unmarshalReturn(ResponseImpl.java:191) at weblogic.rmi.internal.BasicRemoteRef.invoke(BasicRemoteRef.java:176) at com.sabre.fltsked.util.security.ScheduleSecurityValidator3_910_WLStub.hasPermision(Unknown Source) at com.sabre.fltsked.util.security.FSSecurityInterceptor.invoke(FSSecurityInterceptor.java:48) ... 5 more Caused by: java.lang.ClassNotFoundException: Failed to load class void at weblogic.rmi.utils.WLRMIClassLoaderDelegate.loadClass(WLRMIClassLoaderDelegate.java:203) at weblogic.rmi.utils.WLRMIClassLoaderDelegate.loadClass(WLRMIClassLoaderDelegate.java:128) at weblogic.rmi.utils.Utilities.loadClass(Utilities.java:308) at weblogic.rmi.utils.Utilities.loadClass(Utilities.java:344) at weblogic.rjvm.MsgAbbrevInputStream.resolveClass(MsgAbbrevInputStream.java:395) at weblogic.utils.io.ChunkedObjectInputStream$NestedObjectInputStream.resolveClass(ChunkedObjectInputStream.java:255) at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1538) at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1460) at java.io.ObjectInputStream.readClass(ObjectInputStream.java:1427) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1282) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1912) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1836) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1713) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:339) at weblogic.utils.io.ChunkedObjectInputStream.readObject(ChunkedObjectInputStream.java:195) at weblogic.rjvm.MsgAbbrevInputStream.readObject(MsgAbbrevInputStream.java:555) at weblogic.utils.io.ChunkedObjectInputStream.readObject(ChunkedObjectInputStream.java:191) at com.sabre.fltsked.util.security.ScheduleSecurityValidator3_WLSkel.invoke(Unknown Source) at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:517) at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:407) at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:363) at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:147) at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:403) at weblogic.rmi.internal.BasicServerRef.access$300(BasicServerRef.java:56) at weblogic.rmi.internal.BasicServerRef$BasicExecuteRequest.run(BasicServerRef.java:934) at weblogic.work.ExecuteThread.execute(ExecuteThread.java:207) at weblogic.work.ExecuteThread.run(ExecuteThread.java:179)<pre></pre>

hi,
I am also getting the same exception when making call to the server.
If u get the solution for this problem.can u please tell me why this is happening.
Thanks.

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    client, I get this error at random intervals :
    org.xml.sax.SAXParseException: Unbalanced ELEMENT got:detail expected:init at
    weblogic.xml.babel.baseparser.SAXElementFactory.createSAXParseException(SAXElementFactory.java:67)
    at weblogic.xml.babel.parsers.StreamParser.streamParseSome(StreamParser.java:136)
    at weblogic.xml.babel.parsers.BabelXMLEventStream.parseSome(BabelXMLEventStream.java:46)
    at weblogicx.xml.stream.SubEventStream.parseSome(SubEventStream.java:48) at weblogicx.xml.stream.SubElementEventStream.parseSome(SubElementEventStream.java:38)
    at weblogicx.xml.stream.SubEventStream.parseSome(SubEventStream.java:48) at weblogicx.xml.stream.SubElementEventStream.parseSome(SubElementEventStream.java:38)
    at weblogicx.xml.stream.XMLEventStreamBase.hasNext(XMLEventStreamBase.java:135)
    at weblogicx.xml.stream.helpers.TextBuilder.process(TextBuilder.java:23) at weblogic.soap.codec.SoapEncodingCodec.decode(SoapEncodingCodec.java:194)
    at weblogic.soap.codec.SoapEncodingCodec.decode(SoapEncodingCodec.java:145) at
    weblogic.soap.codec.CodecFactory.decode(CodecFactory.java:66) at weblogic.soap.codec.Operation.read(Operation.java:97)
    at weblogic.soap.codec.SoapMessage.readOperation(SoapMessage.java:200) at weblogic.soap.codec.SoapMessage.read(SoapMessage.java:130)
    at weblogic.soap.WebServiceProxy.receive(WebServiceProxy.java:480) at weblogic.soap.WebServiceProxy.invoke(WebServiceProxy.java:431)
    at weblogic.soap.SoapMethod.invoke(SoapMethod.java:186)
    it seems to be caused by a read time out :
    Server side error: java.io.InterruptedIOException:
    Read timed out at java.net.SocketInputStream.socketRead(Native Method) at java.net.SocketInputStream.read(SocketInputStream.java:86)
    at weblogic.servlet.internal.PostInputStream.read(PostInputStream.java:124) at
    weblogic.servlet.internal.ServletInputStreamImpl.read(ServletInputStreamImpl.java:97)
    at java.io.FilterInputStream.read(FilterInputStream.java:114) at java.io.PushbackInputStream.read(PushbackInputStream.java:164)
    at java.io.FilterInputStream.read(FilterInputStream.java:93) at weblogic.xml.babel.reader.XmlReader.(XmlReader.java:247)
    at weblogic.xml.babel.reader.XmlReader.createReader(XmlReader.java:124) at weblogic.xml.babel.baseparser.BaseParser.init(BaseParser.java:98)
    at weblogic.xml.babel.parsers.StreamParser.(StreamParser.java:42) at weblogic.xml.babel.parsers.BabelXMLEventStream.startDocument(BabelXMLEventStream.java:28)
    at weblogic.soap.server.servlet.StatelessBeanAdapter.getXMLStream(StatelessBeanAdapter.java:216)
    at weblogic.soap.server.servlet.StatelessBeanAdapter.getInputMessage(StatelessBeanAdapter.java:151)
    at weblogic.soap.server.servlet.StatelessBeanAdapter.doPost(StatelessBeanAdapter.java:113)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:760) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
    at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:265)
    at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:200)
    at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:2456)
    at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2039)
    at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:139) at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
    Does anybody have som hints for this situation?
    Regards,
    Per Mengshoel

    Hi all,
    as many developers I have encountered the famous "java.rmi.MarshallException:(1)Missing end tag for Body or Envelope" during the development of my WS app for J2ME (JSR 172).
    It is correct that is the empty tag <soapenv:Header /> causing this error.
    To fix this error, it is necessary to stop the server to generate this empty header in the response stream.
    I have fixed this error for Axis2: unfortunaly it is necessary to modify a class in Axiom library. This library is used in Axis2 to produce the SOAP response, you can download the source code at http://ws.apache.org/commons/axiom/source-repository.html.
    Here the class to modify:
    axiom\modules\axiom-impl\src\main\java\org\apache\axiom\soap\impl\llom\soap11\SOAP11Factory.java
    by commenting the line 273 in the method called getDefaultEnvelope() to prevent the empty header insertion in SOAP response:
    public SOAPEnvelope getDefaultEnvelope() throws SOAPProcessingException {
            OMNamespace ns =
                    new OMNamespaceImpl(
                            SOAP11Constants.SOAP_ENVELOPE_NAMESPACE_URI,
                            SOAP11Constants.SOAP_DEFAULT_NAMESPACE_PREFIX);
            SOAPEnvelopeImpl env = new SOAPEnvelopeImpl(ns, this);
            //createSOAPHeader(env); the line to be commented
            createSOAPBody(env);
            return env;
        }Finally you have to recompile Axiom using Maven to obtain the fixed package axiom-impl.jar and to replace this package on the lib repository of your Axis2 server.
    A little tricky to fix this bug but now my app runs perfectly ;)
    Enjoy!
    Romain Pellerin
    http://www.gasp-mobilegaming.org

  • Error when invoking WebService from WTK 2.5 client

    hi all,
    i have developend an EJB3 webservice using JBoss4.0.5.GA...
    i wrote a java client using wstools and it worked fine
    Then i used StubGenerator from WTK , it generated stubs....
    i then tried tocall the jbossws.. the jbossws received the call, but in i got a disaster error when i received back the response from the webservice.
    this was the response from the webservice (as i checked in the WTK network monitor)
    <env:Envelope xmlns:env='http://schemas.xmlsoap.org/soap/envelope/'>
    <env:Header/>
    <env:Body><ns1:loginResponse xmlns:ns1='http://org.jboss.ws/ejb3ws' xmlns:xsi='http://www.w3.org/2001/XMLSchema
    -instance'/>
    </env:Body>
    </env:Envelope>and this was the exception that i was able to see in the WTK
    javax.xml.rpc.JAXRPCException: java.rmi.MarshalException: (1)Missing end tag for Body or Envelope
         at com.sun.j2mews.xml.rpc.SOAPDecoder.decode(+243)
         at com.sun.j2mews.xml.rpc.OperationImpl.invoke(+90)
         at com.mm.j2me.ws.WSRemoteSEI_Stub.login(+48)
         at com.mm.j2me.midp.model.HTTPCommunicationHandler.createAccount(+36)
         at com.mm.j2me.midp.model.RemoteModelRequestHandler.createAccount(+16)
         at com.mm.j2me.midp.model.RemoteModelProxy.createAccount(+16)
         at com.mm.j2me.midp.model.ModelFacade.createAccount(+16)
         at com.mm.j2me.midp.ui.UIController$EventDispatcher.run(+277)Well, i can see both Body and Envelopen in the message that has been sent back, so can anyone tell me what's wrong with WTK??
    thanks in advance and regards
    marco

    Hi all,
    as many developers I have encountered the famous "java.rmi.MarshallException:(1)Missing end tag for Body or Envelope" during the development of my WS app for J2ME (JSR 172).
    It is correct that is the empty tag <soapenv:Header /> causing this error.
    To fix this error, it is necessary to stop the server to generate this empty header in the response stream.
    I have fixed this error for Axis2: unfortunaly it is necessary to modify a class in Axiom library. This library is used in Axis2 to produce the SOAP response, you can download the source code at http://ws.apache.org/commons/axiom/source-repository.html.
    Here the class to modify:
    axiom\modules\axiom-impl\src\main\java\org\apache\axiom\soap\impl\llom\soap11\SOAP11Factory.java
    by commenting the line 273 in the method called getDefaultEnvelope() to prevent the empty header insertion in SOAP response:
    public SOAPEnvelope getDefaultEnvelope() throws SOAPProcessingException {
            OMNamespace ns =
                    new OMNamespaceImpl(
                            SOAP11Constants.SOAP_ENVELOPE_NAMESPACE_URI,
                            SOAP11Constants.SOAP_DEFAULT_NAMESPACE_PREFIX);
            SOAPEnvelopeImpl env = new SOAPEnvelopeImpl(ns, this);
            //createSOAPHeader(env); the line to be commented
            createSOAPBody(env);
            return env;
        }Finally you have to recompile Axiom using Maven to obtain the fixed package axiom-impl.jar and to replace this package on the lib repository of your Axis2 server.
    A little tricky to fix this bug but now my app runs perfectly ;)
    Enjoy!
    Romain Pellerin
    http://www.gasp-mobilegaming.org

  • Register failk error when invoking ActiveX control for a JavaBean from VB6

    J2RE v1.4.2_09
    Visual Basic 6.0 SP5/Visual C++ 6.0 SP5
    Windows 2000 SP4
    We have our existing production applications written using VB6 and VC++6. We are in the process of moving them incrementally to J2EE. Before everything is totally re-written in J2EE, we need to do something for interoperability between existing VB6/VC++6 and J2EE. ActiveX Bridge seems to be the solution we need, if only it works.
    Problem that I am facing....
    Register failk error when I try to insert a java bean activex control on a VB6.0 or VC++6.0 form or create an instance of the activex "Person.Bean.1" using CreateObject function, it throws the following error. I am able to create an instance of Person Bean ActiveX Control using ActiveX Control Test Container that comes with Visual Studio 6.0 and invoke the methods in the bean successfully though which means that the ActiveX control is registered properly and working.
    Error Message Box Title: asdas
    Error Message: register failk
    And then another error message pops up.
    Error Message Box Title: Java(TM) Plug-in Fatal Error
    Error Message: Cannot load class sun/plugin/JavaRunTime
    The Bridge was installed at <D:\PROGRA~1\Java\J2RE14~2.2_0> but the class is not there. Modify the registry key to reflect the new bridge location. The key is HKEY_LOCAL_MACHINE\Software\JavaSoft\Java Plug-in or Change your CLASSPATH to include the new directory.
    I have this sample java bean class.
    a) Person.java
    import java.io.*;
    public class Person implements Serializable{
    private String fName,lName;
    public Person(){
    fName = new String();
    lName = new String();
    public void setFirstName(String firstName){
    fName = firstName;
    public void setLastName(String lastName){
    lName = lastName;
    public String getName(){
    return fName+" "+lName;
    b) person_manifest
    Name: Person.class
    Java-Bean: True
    Steps followed:
    call "C:\Program Files\Microsoft Visual Studio\VC98\Bin\vcvars32.bat"
    set path=D:\j2sdk1.4.2_09\bin;%path%
    javac Person.java
    jar -cvfm Person.jar person_manifest Person.class
    mkdir "d:\Program Files\Java\j2re1.4.2_09\axbridge\bin"
    D:\j2sdk1.4.2_09\bin\packager -out "d:\Program Files\Java\j2re1.4.2_09\axbridge\bin" -reg Person.jar Person
    Person.dll file created under d:\Program Files\Java\j2re1.4.2_09\axbridge\bin and Person.jar copied under d:\Program Files\Java\j2re1.4.2_09\axbridge\lib.
    I am able to create an instance of this Person Bean ActiveX Control using ActiveX Control Test Container that comes with Visual Studio 6.0 and invoke the methods in the bean successfully. But, when I try to insert the activex control on a VB6 or VC++6 form or create an instance of "Person.Bean.1" using CreateObject function, it throws the above mentioned errors.
    I checked the registry and it shows J2RE1.4.2_09 version properly under that key and the Person.dll file exists under d:\Program Files\Java\j2re1.4.2_09\axbridge\bin. I also explicitly added the plugin.jar, person.jar to the classpath. Still it gives the error.
    Any ideas? Any fix or workaround for this problem? Thanks.

    Sometimes solutions are simpler than expose the problem.
    Did you add the dll to the project references?
    Sometimes also it is usefull to use the regsvr32 program to register the DLL.
    Pedro

  • Error when making a database call froman ejb

    Hello,
    I am getting the following error when accessing the database from an ejb -
    java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
         java.rmi.RemoteException
         at com.sun.corba.ee.internal.iiop.ShutdownUtilDelegate.mapSystemException(ShutdownUtilDelegate.java:68)
         at javax.rmi.CORBA.Util.mapSystemException(Util.java:65)
         at com.ejb._EULookupRemoteIF_Stub.fetchAllLookups(Unknown Source)
         at com.ejb._EULookupRemoteIF_Stub.fetchAllLookups(Unknown Source)
         at com.servlets.login.EUClsLoginServlet.doPost(Unknown Source)
         at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
         at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
         at org.apache.catalina.core.StandardWrapperValve.invokeServletService(StandardWrapperValve.java:720)
         at org.apache.catalina.core.StandardWrapperValve.access$000(StandardWrapperValve.java:118)
         at org.apache.catalina.core.StandardWrapperValve$1.run(StandardWrapperValve.java:278)
         at java.security.AccessController.doPrivileged(Native Method)
         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:274)
         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:505)
         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:212)
         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:505)
         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:203)
         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:505)
         at com.iplanet.ias.web.connector.nsapi.NSAPIProcessor.process(NSAPIProcessor.java:157)
         at com.iplanet.ias.web.WebContainer.service(WebContainer.java:598)
    Caused by: java.rmi.RemoteException
         at com.sun.enterprise.iiop.POAProtocolMgr.mapException(POAProtocolMgr.java:451)
         at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:545)
         at com.ejb.EUClsLookupBean_EJBObjectImpl.fetchAllLookups(EUClsLookupBean_EJBObjectImpl.java:101)
         at com.ejb._EUClsLookupBean_EJBObjectImpl_Tie._invoke(Unknown Source)
         at com.sun.corba.ee.internal.POA.GenericPOAServerSC.dispatchToServant(GenericPOAServerSC.java:569)
         at com.sun.corba.ee.internal.POA.GenericPOAServerSC.internalDispatch(GenericPOAServerSC.java:211)
         at com.sun.corba.ee.internal.POA.GenericPOAServerSC.dispatch(GenericPOAServerSC.java:113)
         at com.sun.corba.ee.internal.iiop.ORB.process(ORB.java:275)
         at com.sun.corba.ee.internal.iiop.LocalClientRequestImpl.invoke(LocalClientRequestImpl.java:96)
         at com.sun.corba.ee.internal.corba.ClientDelegate.invoke(ClientDelegate.java:237)
         at com.sun.corba.ee.internal.POA.GenericPOAClientSC.invoke(GenericPOAClientSC.java:97)
         at org.omg.CORBA.portable.ObjectImpl._invoke(ObjectImpl.java:457)
         at com.ejb._EULookupRemoteIF_Stub.fetchAllLookups(Unknown Source)
         ... 16 more
    Any help?

    Please look in those 16 other stack traces for more details, there should be an actual SQLException if
    it's a database problem, and/or the actual bean method that caused the problem.
    Regards,
    Marina

  • Error when invoking worklist api from adf 11g

    Hi,
    I am using ADF 11g. This application invokes Worklist Application APIs. When I try to login it throws this error. Basically it throws error at worklist application authentication. Am I missing any jar files? These are the jar files I included in the project.
    Bpm-services.jar
    Bpm-workflow-datacontrol.jar
    Oracle.soa.workflow.jar
    Wsclient.jar
    javax.servlet.ServletException: oracle/tip/pc/infra/exception/PCException
         at javax.faces.webapp.FacesServlet.service(FacesServlet.java:277)
         at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
         at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
         at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:292)
         at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
         at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
         at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:191)
         at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
         at oracle.adfinternal.view.faces.webapp.rich.RegistrationFilter.doFilter(RegistrationFilter.java:85)
         at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:420)
         at oracle.adfinternal.view.faces.activedata.AdsFilter.doFilter(AdsFilter.java:54)
         at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:420)
         at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl(TrinidadFilterImpl.java:247)
         at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:157)
         at org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:92)
         at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
         at oracle.security.jps.wls.JpsWlsFilter$1.run(JpsWlsFilter.java:96)
         at java.security.AccessController.doPrivileged(Native Method)
         at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:313)
         at oracle.security.jps.wls.util.JpsWlsUtil.runJaasMode(JpsWlsUtil.java:146)
         at oracle.security.jps.wls.JpsWlsFilter.doFilter(JpsWlsFilter.java:140)
         at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:70)
         at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
         at oracle.dms.wls.DMSServletFilter.doFilter(DMSServletFilter.java:202)
         at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
         at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
         at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
         at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3588)
         at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
         at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
         at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2200)
         at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2106)
         at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1428)
         at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
         at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
    Caused by: java.lang.NoClassDefFoundError: oracle/tip/pc/infra/exception/PCException
         at java.lang.ClassLoader.defineClass1(Native Method)
         at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
         at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
         at weblogic.utils.classloaders.GenericClassLoader.defineClass(GenericClassLoader.java:344)
         at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(GenericClassLoader.java:301)
         at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClassLoader.java:269)
         at weblogic.utils.classloaders.ChangeAwareClassLoader.findClass(ChangeAwareClassLoader.java:55)
         at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
         at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
         at weblogic.utils.classloaders.GenericClassLoader.loadClass(GenericClassLoader.java:177)
         at weblogic.utils.classloaders.ChangeAwareClassLoader.loadClass(ChangeAwareClassLoader.java:36)
         at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
         at java.lang.ClassLoader.defineClass1(Native Method)
         at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
         at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
         at weblogic.utils.classloaders.GenericClassLoader.defineClass(GenericClassLoader.java:344)
         at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(GenericClassLoader.java:301)
         at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClassLoader.java:269)
         at weblogic.utils.classloaders.ChangeAwareClassLoader.findClass(ChangeAwareClassLoader.java:55)
         at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
         at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
         at weblogic.utils.classloaders.GenericClassLoader.loadClass(GenericClassLoader.java:177)
         at weblogic.utils.classloaders.ChangeAwareClassLoader.loadClass(ChangeAwareClassLoader.java:36)
         at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
         at java.lang.ClassLoader.defineClass1(Native Method)
         at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
         at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
         at weblogic.utils.classloaders.GenericClassLoader.defineClass(GenericClassLoader.java:344)
         at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(GenericClassLoader.java:301)
         at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClassLoader.java:269)
         at weblogic.utils.classloaders.ChangeAwareClassLoader.findClass(ChangeAwareClassLoader.java:55)
         at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
         at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
         at weblogic.utils.classloaders.GenericClassLoader.loadClass(GenericClassLoader.java:177)
         at weblogic.utils.classloaders.ChangeAwareClassLoader.loadClass(ChangeAwareClassLoader.java:36)
         at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
         at java.lang.Class.forName0(Native Method)
         at java.lang.Class.forName(Class.java:247)
         at weblogic.rmi.utils.WLRMIClassLoaderDelegate.loadClass(WLRMIClassLoaderDelegate.java:204)
         at weblogic.rmi.utils.WLRMIClassLoaderDelegate.loadClass(WLRMIClassLoaderDelegate.java:135)
         at weblogic.rmi.utils.Utilities.loadClass(Utilities.java:306)
         at weblogic.rjvm.MsgAbbrevInputStream.resolveClass(MsgAbbrevInputStream.java:399)
         at weblogic.utils.io.ChunkedObjectInputStream$NestedObjectInputStream.resolveClass(ChunkedObjectInputStream.java:257)
         at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1575)
         at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1496)
         at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1732)
         at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
         at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1947)
         at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1871)
         at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753)
         at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
         at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
         at weblogic.utils.io.ChunkedObjectInputStream.readObject(ChunkedObjectInputStream.java:197)
         at weblogic.rjvm.MsgAbbrevInputStream.readObject(MsgAbbrevInputStream.java:564)
         at weblogic.rjvm.ResponseImpl.getThrowable(ResponseImpl.java:190)
         at weblogic.rjvm.ResponseImpl.unmarshalReturn(ResponseImpl.java:232)
         at weblogic.rmi.cluster.ClusterableRemoteRef.invoke(ClusterableRemoteRef.java:348)
         at weblogic.rmi.cluster.ClusterableRemoteRef.invoke(ClusterableRemoteRef.java:259)
         at oracle.bpel.services.workflow.query.ejb.TaskQueryService_oz1ipg_EOImpl_1031_WLStub.authenticate(Unknown Source)
         at oracle.bpel.services.workflow.query.client.TaskQueryServiceRemoteClient.authenticate(TaskQueryServiceRemoteClient.java:103)
         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
         at java.lang.reflect.Method.invoke(Method.java:597)
         at oracle.bpel.services.workflow.client.WFClientRetryInvocationHandler.invokeTarget(WFClientRetryInvocationHandler.java:121)
         at oracle.bpel.services.workflow.client.WFClientRetryInvocationHandler.invoke(WFClientRetryInvocationHandler.java:67)
         at $Proxy133.authenticate(Unknown Source)
         at task.TaskBacking.getWorkflowContext(TaskBacking.java:103)
         at task.TaskBacking.updateTaskStatus(TaskBacking.java:125)
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