I am getting following Error on startup of weblogic 10.3.6

Question

java.lang.ClassCastException: weblogic.xml.jaxp.RegistryXMLReader cannot be cast to org.xml.sax.XMLReaderWarning: Caught exception attempting to use SAX to load a SAX XMLReader Warning: Exception was: java.lang.ClassCastException: weblogic.xml.jaxp.RegistryXMLReader cannot be cast to org.xml.sax.XMLReader Warning: I will print the stack trace then carry on using the default SAX parser

at org.xml.sax.helpers.XMLReaderFactory.loadClass(Unknown Source)
at org.xml.sax.helpers.XMLReaderFactory.createXMLReader(Unknown Source)
at org.dom4j.io.SAXHelper.createXMLReader(SAXHelper.java:83)
at org.dom4j.io.SAXReader.createXMLReader(SAXReader.java:894)
at org.dom4j.io.SAXReader.getXMLReader(SAXReader.java:715)
at org.dom4j.io.SAXReader.setFeature(SAXReader.java:218)
at org.hibernate.ejb.Ejb3Configuration.addXMLEntities(Ejb3Configuration.java:438)
at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:360)
at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:126)
at weblogic.deployment.BasePersistenceUnitInfoImpl.initializeEntityManagerFactory(BasePersistenceUnitInfoImpl.java:393)
at weblogic.deployment.BasePersistenceUnitInfoImpl.initializeEntityManagerFactory(BasePersistenceUnitInfoImpl.java:386)
at weblogic.deployment.BasePersistenceUnitInfoImpl.<init>(BasePersistenceUnitInfoImpl.java:158)
at weblogic.deployment.PersistenceUnitInfoImpl.<init>(PersistenceUnitInfoImpl.java:39)
at weblogic.deployment.AbstractPersistenceUnitRegistry.storeDescriptors(AbstractPersistenceUnitRegistry.java:349)
at weblogic.deployment.AbstractPersistenceUnitRegistry.loadPersistenceDescriptors(AbstractPersistenceUnitRegistry.java:124)
at weblogic.deployment.ModulePersistenceUnitRegistry.<init>(ModulePersistenceUnitRegistry.java:58)
at weblogic.servlet.internal.WebAppModule.setupPersistenceUnitRegistry(WebAppModule.java:1827)
at weblogic.servlet.internal.WebAppServletContext.initClassLoader(WebAppServletContext.java:3029)
at weblogic.servlet.internal.WebAppServletContext.<init>(WebAppServletContext.java:448)
at weblogic.servlet.internal.WebAppServletContext.<init>(WebAppServletContext.java:494)
at weblogic.servlet.internal.HttpServer.loadWebApp(HttpServer.java:418)
at weblogic.servlet.internal.WebAppModule.registerWebApp(WebAppModule.java:976)
at weblogic.servlet.internal.WebAppModule.prepare(WebAppModule.java:384)
at weblogic.application.internal.flow.ScopedModuleDriver.prepare(ScopedModuleDriver.java:176)
at weblogic.application.internal.flow.ModuleListenerInvoker.prepare(ModuleListenerInvoker.java:199)
at weblogic.application.internal.flow.DeploymentCallbackFlow$1.next(DeploymentCallbackFlow.java:517)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:52)
at weblogic.application.internal.flow.DeploymentCallbackFlow.prepare(DeploymentCallbackFlow.java:159)
at weblogic.application.internal.flow.DeploymentCallbackFlow.prepare(DeploymentCallbackFlow.java:45)
at weblogic.application.internal.BaseDeployment$1.next(BaseDeployment.java:648)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:52)
at weblogic.application.internal.BaseDeployment.prepare(BaseDeployment.java:191)
at weblogic.application.internal.EarDeployment.prepare(EarDeployment.java:59)
at weblogic.application.internal.DeploymentStateChecker.prepare(DeploymentStateChecker.java:154)
at weblogic.deploy.internal.targetserver.AppContainerInvoker.prepare(AppContainerInvoker.java:60)
at weblogic.deploy.internal.targetserver.operations.ActivateOperation.createAndPrepareContainer(ActivateOperation.java:208)
at weblogic.deploy.internal.targetserver.operations.ActivateOperation.doPrepare(ActivateOperation.java:98)
at weblogic.deploy.internal.targetserver.operations.AbstractOperation.prepare(AbstractOperation.java:217)
at weblogic.deploy.internal.targetserver.DeploymentManager.handleDeploymentPrepare(DeploymentManager.java:747)
at weblogic.deploy.internal.targetserver.DeploymentManager.prepareDeploymentList(DeploymentManager.java:1216)
at weblogic.deploy.internal.targetserver.DeploymentManager.handlePrepare(DeploymentManager.java:250)
at weblogic.deploy.internal.targetserver.DeploymentServiceDispatcher.prepare(DeploymentServiceDispatcher.java:159)
at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.doPrepareCallback(DeploymentReceiverCallbackDeliverer.java:171)
at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.access$000(DeploymentReceiverCallbackDeliverer.java:13)
at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer$1.run(DeploymentReceiverCallbackDeliverer.java:46)
at weblogic.work.SelfTuningWorkManagerImpl$WorkAdapterImpl.run(SelfTuningWorkManagerImpl.java:545)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:256)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:221)

java.lang.ClassCastException: weblogic.xml.jaxp.RegistryXMLReader cannot be cast to org.xml.sax.XMLReader at org.xml.sax.helpers.XMLReaderFactory.loadClass(Unknown Source) at org.xml.sax.helpers.XMLReaderFactory.createXMLReader(Unknown Source) at org.dom4j.io.SAXHelper.createXMLReader(SAXHelper.java:83) at org.dom4j.io.SAXReader.createXMLReader(SAXReader.java:894) at org.dom4j.io.SAXReader.getXMLReader(SAXReader.java:715) at org.dom4j.io.SAXReader.read(SAXReader.java:435) at org.dom4j.io.SAXReader.read(SAXReader.java:343) at org.hibernate.ejb.Ejb3Configuration.addXMLEntities(Ejb3Configuration.java:455) at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:360) at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:126) at weblogic.deployment.BasePersistenceUnitInfoImpl.initializeEntityManagerFactory(BasePersistenceUnitInfoImpl.java:393) at weblogic.deployment.BasePersistenceUnitInfoImpl.initializeEntityManagerFactory(BasePersistenceUnitInfoImpl.java:386) at weblogic.deployment.BasePersistenceUnitInfoImpl.(BasePersistenceUnitInfoImpl.java:158) at weblogic.deployment.PersistenceUnitInfoImpl.(PersistenceUnitInfoImpl.java:39) at weblogic.deployment.AbstractPersistenceUnitRegistry.storeDescriptors(AbstractPersistenceUnitRegistry.java:349) at weblogic.deployment.AbstractPersistenceUnitRegistry.loadPersistenceDescriptors(AbstractPersistenceUnitRegistry.java:124) at weblogic.deployment.ModulePersistenceUnitRegistry.(ModulePersistenceUnitRegistry.java:58) at weblogic.servlet.internal.WebAppModule.setupPersistenceUnitRegistry(WebAppModule.java:1827) at weblogic.servlet.internal.WebAppServletContext.initClassLoader(WebAppServletContext.java:3029) at weblogic.servlet.internal.WebAppServletContext.(WebAppServletContext.java:448) at weblogic.servlet.internal.WebAppServletContext.(WebAppServletContext.java:494) at weblogic.servlet.internal.HttpServer.loadWebApp(HttpServer.java:418) at weblogic.servlet.internal.WebAppModule.registerWebApp(WebAppModule.java:976) at weblogic.servlet.internal.WebAppModule.prepare(WebAppModule.java:384) at weblogic.application.internal.flow.ScopedModuleDriver.prepare(ScopedModuleDriver.java:176) at weblogic.application.internal.flow.ModuleListenerInvoker.prepare(ModuleListenerInvoker.java:199) at weblogic.application.internal.flow.DeploymentCallbackFlow$1.next(DeploymentCallbackFlow.java:517) at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:52) at weblogic.application.internal.flow.DeploymentCallbackFlow.prepare(DeploymentCallbackFlow.java:159) at weblogic.application.internal.flow.DeploymentCallbackFlow.prepare(DeploymentCallbackFlow.java:45) at weblogic.application.internal.BaseDeployment$1.next(BaseDeployment.java:648) at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:52) at weblogic.application.internal.BaseDeployment.prepare(BaseDeployment.java:191) at weblogic.application.internal.EarDeployment.prepare(EarDeployment.java:59) at weblogic.application.internal.DeploymentStateChecker.prepare(DeploymentStateChecker.java:154) at weblogic.deploy.internal.targetserver.AppContainerInvoker.prepare(AppContainerInvoker.java:60) at weblogic.deploy.internal.targetserver.operations.ActivateOperation.createAndPrepareContainer(ActivateOperation.java:208) at weblogic.deploy.internal.targetserver.operations.ActivateOperation.doPrepare(ActivateOperation.java:98) at weblogic.deploy.internal.targetserver.operations.AbstractOperation.prepare(AbstractOperation.java:217) at weblogic.deploy.internal.targetserver.DeploymentManager.handleDeploymentPrepare(DeploymentManager.java:747) at weblogic.deploy.internal.targetserver.DeploymentManager.prepareDeploymentList(DeploymentManager.java:1216) at weblogic.deploy.internal.targetserver.DeploymentManager.handlePrepare(DeploymentManager.java:250) at weblogic.deploy.internal.targetserver.DeploymentServiceDispatcher.prepare(DeploymentServiceDispatcher.java:159) at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.doPrepareCallback(DeploymentReceiverCallbackDeliverer.java:171) at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.access$000(DeploymentReceiverCallbackDeliverer.java:13) at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer$1.run(DeploymentReceiverCallbackDeliverer.java:46) at weblogic.work.SelfTuningWorkManagerImpl$WorkAdapterImpl.run(SelfTuningWorkManagerImpl.java:545) at weblogic.work.ExecuteThread.execute(ExecuteThread.java:256) at weblogic.work.ExecuteThread.run(ExecuteThread.java:221) Warning: Caught exception attempting to use SAX to load a SAX XMLReader Warning: Exception was: java.lang.ClassCastException: weblogic.xml.jaxp.RegistryXMLReader cannot be cast to org.xml.sax.XMLReader Warning: I will print the stack trace then carry on using the default SAX parser

What is the best way to fix the above error.

My weblogic.xml file as follows.......

http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd http://xmlns.oracle.com/weblogic/weblogic-web-app http://xmlns.oracle.com/weblogic/weblogic-web-app/1.3/weblogic-web-app.xsd"> 10.3.6 RatingsBD

<wls:container-descriptor>
    <wls:prefer-web-inf-classes>true</wls:prefer-web-inf-classes>
</wls:container-descriptor> 

does any one have solution for that...... Please help me out i'm wondering..........

Answer 1

this error is due to some problem in weblogic.xml

1) you may be uploading your application from some remote system so first copy the war or ear in the same system in which weblogic is installed

2) there may be space in between tags in weblogic.xml

3) you are using weblogic.xml of some older version generate a new xml may be through eclipse