ClassCastException: occured

[sameera liyanage]

here is the exception

java.lang.ClassCastException: weblogic.xml.jaxp.RegistryDocumentBuilderFactory 
at javax.xml.parsers.DocumentBuilderFactory.newInstance()Ljavax.xml.parsers.DocumentBuilderFactory;(Unknown Source) 
at org.apache.log4j.xml.DOMConfigurator.doConfigure(Lorg.xml.sax.InputSource;Lorg.apache.log4j.spi.LoggerRepository;)V(DOMConfigurator.java:644) 
at org.apache.log4j.xml.DOMConfigurator.doConfigure(Ljava.io.InputStream;Lorg.apache.log4j.spi.LoggerRepository;)V(DOMConfigurator.java:616) 
at org.apache.log4j.xml.DOMConfigurator.doConfigure(Ljava.net.URL;Lorg.apache.log4j.spi.LoggerRepository;)V(DOMConfigurator.java:602) 
at org.apache.log4j.helpers.OptionConverter.selectAndConfigure(Ljava.net.URL;Ljava.lang.String;Lorg.apache.log4j.spi.LoggerRepository;)V(OptionConverter.java:460) 
at org.apache.log4j.LogManager.<clinit>()V(LogManager.java:113) 
at jrockit.vm.RNI.getRunnableCode(I)I(Unknown Source) 
at jrockit.vm.RNI.trampoline()V(Unknown Source) 
at org.apache.log4j.LogManager.getLogger(Ljava.lang.String;)Lorg.apache.log4j.Logger;(LogManager.java:???) 
at org.apache.log4j.Logger.getLogger(Ljava.lang.Class;)Lorg.apache.log4j.Logger;(Logger.java:94) 
at com.openreach.framework.logging.ORPGLogger.<clinit>()V(ORPGLogger.java:46) 
at jrockit.vm.RNI.initializeClassFromJava(II)V(Unknown Source) 
at jrockit.vm.RNI.clinitTrampoline()V(Unknown Source) 
at com.openreach.techdemonstrator.designer.OTDSessionListener.<init>()V(OTDSessionListener.java:26) 
at java.lang.Object.emptyConstructor()V(Unknown Source) 
at java.lang.Class.newInstanceCached(I)Ljava.lang.Object;(Unknown Source) 
at java.lang.Class.newInstance(I)Ljava.lang.Object;(Unknown Source) 
at weblogic.servlet.internal.WebAppServletContext.registerEventListener(Ljava.lang.String;)V(WebAppServletContext.java:2886) 
at weblogic.servlet.internal.WebAppServletContext.activateFromDescriptors(Lweblogic.management.descriptors.WebDescriptorMBean;)V(WebAppServletContext.java:2426) 
at weblogic.servlet.internal.WebAppServletContext.activate()V(WebAppServletContext.java:5904) 
at weblogic.servlet.internal.WebAppServletContext.setActive(Z)V(WebAppServletContext.java:5882) 
at weblogic.servlet.internal.WebAppModule.activate(Ljava.lang.ClassLoader;)V(WebAppModule.java:834) 
at weblogic.j2ee.J2EEApplicationContainer.activateModule(Lweblogic.utils.classloaders.GenericClassLoader;Lweblogic.j2ee.J2EEApplicationContainer$Component;)V(J2EEApplicationContainer.java:3315) 
at weblogic.j2ee.J2EEApplicationContainer.activate([Lweblogic.j2ee.J2EEApplicationContainer$Component;)V(J2EEApplicationContainer.java:2194) 
at weblogic.j2ee.J2EEApplicationContainer.activate([Lweblogic.management.configuration.ComponentMBean;)V(J2EEApplicationContainer.java:2167) 
at weblogic.management.deploy.slave.SlaveDeployer$ComponentActivateTask.activateContainer()V(SlaveDeployer.java:2503) 
at weblogic.management.deploy.slave.SlaveDeployer$ActivateTask.doCommit()V(SlaveDeployer.java:2421) 
at weblogic.management.deploy.slave.SlaveDeployer$Task.commit()V(SlaveDeployer.java:2138) 
at weblogic.management.deploy.slave.SlaveDeployer$Task.checkAutoCommit()V(SlaveDeployer.java:2237) 
at weblogic.management.deploy.slave.SlaveDeployer$Task.prepare()V(SlaveDeployer.java:2132) 
at weblogic.management.deploy.slave.SlaveDeployer$ActivateTask.prepare()V(SlaveDeployer.java:2384) 
at weblogic.management.deploy.slave.SlaveDeployer.processPrepareTask(Lweblogic.management.deploy.OamVersion;Lweblogic.management.runtime.DeploymentTaskRuntimeMBean;Z)V(SlaveDeployer.java:866) 
--------------- nested within: ------------------ 
weblogic.management.DeploymentException: [Deployer:149233]An unexpected error was encountered during the deployment process. - with nested exception: 
[java.lang.ClassCastException: weblogic.xml.jaxp.RegistryDocumentBuilderFactory] 
at weblogic.management.deploy.slave.SlaveDeployer.throwUnexpected(Ljava.lang.Throwable;)V(SlaveDeployer.java:2011) 
at weblogic.management.deploy.slave.SlaveDeployer.access$600(Lweblogic.management.deploy.slave.SlaveDeployer;Ljava.lang.Throwable;)V(SlaveDeployer.java:124) 
at weblogic.management.deploy.slave.SlaveDeployer$Task.commit()V(SlaveDeployer.java:2153) 
at weblogic.management.deploy.slave.SlaveDeployer$Task.checkAutoCommit()V(SlaveDeployer.java:2237) 
at weblogic.management.deploy.slave.SlaveDeployer$Task.prepare()V(SlaveDeployer.java:2132) 
at weblogic.management.deploy.slave.SlaveDeployer$ActivateTask.prepare()V(SlaveDeployer.java:2384) 
at weblogic.management.deploy.slave.SlaveDeployer.processPrepareTask(Lweblogic.management.deploy.OamVersion;Lweblogic.management.runtime.DeploymentTaskRuntimeMBean;Z)V(SlaveDeployer.java:866) 
at weblogic.management.deploy.slave.SlaveDeployer.prepareDelta(Lweblogic.management.deploy.OamDelta;Lweblogic.management.deploy.OamVersion;ZLjava.lang.StringBuffer;)Z(SlaveDeployer.java:594) 
at weblogic.management.deploy.slave.SlaveDeployer.prepareUpdate(Ljava.util.ArrayList;Z)V(SlaveDeployer.java:508) 
at weblogic.drs.internal.SlaveCallbackHandler$1.execute(Lweblogic.kernel.ExecuteThread;)V(SlaveCallbackHandler.java:25) 
at weblogic.kernel.ExecuteThread.execute(Lweblogic.kernel.ExecuteRequest;)V(ExecuteThread.java:219) 
at weblogic.kernel.ExecuteThread.run()V(ExecuteThread.java:178) 
at java.lang.Thread.startThreadFromVM(Ljava.lang.Thread;)V(Unknown Source) 
No Exception Messages