I've also compiled JBoss JPA example of booking for weblogic and tried deploying it to WL 10. I get different kind of error anonymous wrote : | | Error loading the persistence descriptor WEB-INF/lib/jboss-seam-jpa.jar!/META-INF/persistence.xml from the module jboss-seam-jpa.war. See the following stack trace for nested errors: weblogic.descriptor.DescriptorException: Unmarshaller failed at weblogic.descriptor.internal.MarshallerFactory$1.createDescriptor(MarshallerFactory.java:152) at weblogic.descriptor.BasicDescriptorManager.createDescriptor(BasicDescriptorManager.java:292) at weblogic.descriptor.BasicDescriptorManager.createDescriptor(BasicDescriptorManager.java:260) at weblogic.application.descriptor.AbstractDescriptorLoader2.getDescriptorBeanFromReader(AbstractDescriptorLoader2.java:774) at weblogic.application.descriptor.AbstractDescriptorLoader2.createDescriptorBean(AbstractDescriptorLoader2.java:397) at weblogic.application.descriptor.AbstractDescriptorLoader2.loadDescriptorBeanWithoutPlan(AbstractDescriptorLoader2.java:745) at weblogic.application.descriptor.AbstractDescriptorLoader2.loadDescriptorBean(AbstractDescriptorLoader2.java:754) at weblogic.deployment.AbstractPersistenceUnitRegistry.loadPersistenceDescriptor(AbstractPersistenceUnitRegistry.java:157) at weblogic.deployment.AbstractPersistenceUnitRegistry.loadPersistenceDescriptors(AbstractPersistenceUnitRegistry.java:86) at weblogic.deployment.PersistenceUnitViewer$ResourceViewer.loadDescriptors(PersistenceUnitViewer.java:41) at weblogic.application.compiler.WARModule.merge(WARModule.java:438) at weblogic.application.compiler.flow.SingleModuleMergeFlow.proecessModule(SingleModuleMergeFlow.java:16) at weblogic.application.compiler.flow.SingleModuleFlow.compile(SingleModuleFlow.java:31) at weblogic.application.compiler.FlowDriver$FlowStateChange.next(FlowDriver.java:69) at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:26) at weblogic.application.compiler.FlowDriver.nextState(FlowDriver.java:36) at weblogic.application.compiler.FlowDriver$CompilerFlowDriver.compile(FlowDriver.java:96) at weblogic.application.compiler.ReadOnlyWarMerger.merge(ReadOnlyWarMerger.java:27) at weblogic.application.compiler.flow.AppMergerFlow.mergeInput(AppMergerFlow.java:94) at weblogic.application.compiler.flow.AppMergerFlow.compile(AppMergerFlow.java:47) at weblogic.application.compiler.FlowDriver$FlowStateChange.next(FlowDriver.java:69) at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:26) at weblogic.application.compiler.FlowDriver.nextState(FlowDriver.java:36) at weblogic.application.compiler.FlowDriver$CompilerFlowDriver.compile(FlowDriver.java:96) at weblogic.application.compiler.AppMerge.runBody(AppMerge.java:137) at weblogic.utils.compiler.Tool.run(Tool.java:158) at weblogic.utils.compiler.Tool.run(Tool.java:115) at weblogic.application.compiler.AppMerge.merge(AppMerge.java:149) at weblogic.deploy.api.internal.utils.AppMerger.merge(AppMerger.java:70) at weblogic.deploy.api.internal.utils.AppMerger.getMergedApp(AppMerger.java:51) at weblogic.deploy.api.model.internal.WebLogicDeployableObjectFactoryImpl.createDeployableObject(WebLogicDeployableObjectFactoryImpl.java:177) at weblogic.deploy.api.model.internal.WebLogicDeployableObjectFactoryImpl.createLazyDeployableObject(WebLogicDeployableObjectFactoryImpl.java:150) Caused by: com.bea.xml.XmlException: failed to load java type corresponding to e=persistence at com.bea.staxb.runtime.internal.UnmarshalResult.getPojoBindingType(UnmarshalResult.java:329) at com.bea.staxb.runtime.internal.UnmarshalResult.determineTypeForGlobalElement(UnmarshalResult.java:296) at com.bea.staxb.runtime.internal.UnmarshalResult.determineTypeForGlobalElement(UnmarshalResult.java:306) at com.bea.staxb.runtime.internal.UnmarshalResult.determineRootType(UnmarshalResult.java:287) at com.bea.staxb.runtime.internal.UnmarshalResult.unmarshalDocument(UnmarshalResult.java:153) at com.bea.staxb.runtime.internal.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:65) at weblogic.descriptor.internal.MarshallerFactory$1.createDescriptor(MarshallerFactory.java:141) at weblogic.descriptor.BasicDescriptorManager.createDescriptor(BasicDescriptorManager.java:292) at weblogic.descriptor.BasicDescriptorManager.createDescriptor(BasicDescriptorManager.java:260) at weblogic.application.descriptor.AbstractDescriptorLoader2.getDescriptorBeanFromReader(AbstractDescriptorLoader2.java:774) at weblogic.application.descriptor.AbstractDescriptorLoader2.createDescriptorBean(AbstractDescriptorLoader2.java:397) at weblogic.application.descriptor.AbstractDescriptorLoader2.loadDescriptorBeanWithoutPlan(AbstractDescriptorLoader2.java:745) at weblogic.application.descriptor.AbstractDescriptorLoader2.loadDescriptorBean(AbstractDescriptorLoader2.java:754) at weblogic.deployment.AbstractPersistenceUnitRegistry.loadPersistenceDescriptor(AbstractPersistenceUnitRegistry.java:157) at weblogic.deployment.AbstractPersistenceUnitRegistry.loadPersistenceDescriptors(AbstractPersistenceUnitRegistry.java:86) at weblogic.deployment.PersistenceUnitViewer$ResourceViewer.loadDescriptors(PersistenceUnitViewer.java:41) at weblogic.application.compiler.WARModule.merge(WARModule.java:438) at weblogic.application.compiler.flow.SingleModuleMergeFlow.proecessModule(SingleModuleMergeFlow.java:16) at weblogic.application.compiler.flow.SingleModuleFlow.compile(SingleModuleFlow.java:31) at weblogic.application.compiler.FlowDriver$FlowStateChange.next(FlowDriver.java:69) at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:26) at weblogic.application.compiler.FlowDriver.nextState(FlowDriver.java:36) at weblogic.application.compiler.FlowDriver$CompilerFlowDriver.compile(FlowDriver.java:96) at weblogic.application.compiler.ReadOnlyWarMerger.merge(ReadOnlyWarMerger.java:27) at weblogic.application.compiler.flow.AppMergerFlow.mergeInput(AppMergerFlow.java:94) at weblogic.application.compiler.flow.AppMergerFlow.compile(AppMergerFlow.java:47) at weblogic.application.compiler.FlowDriver$FlowStateChange.next(FlowDriver.java:69) at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:26) at weblogic.application.compiler.FlowDriver.nextState(FlowDriver.java:36) at weblogic.application.compiler.FlowDriver$CompilerFlowDriver.compile(FlowDriver.java:96) at weblogic.application.compiler.AppMerge.runBody(AppMerge.java:137) at weblogic.utils.compiler.Tool.run(Tool.java:158) | Error loading the persistence descriptor WEB-INF/lib/jboss-seam-jpa.jar!/META-INF/persistence.xml from the module jboss-seam-jpa.war. See the following stack trace for nested errors: weblogic.descriptor.DescriptorException: Unmarshaller failed at weblogic.descriptor.internal.MarshallerFactory$1.createDescriptor(MarshallerFactory.java:152) at weblogic.descriptor.BasicDescriptorManager.createDescriptor(BasicDescriptorManager.java:292) at weblogic.descriptor.BasicDescriptorManager.createDescriptor(BasicDescriptorManager.java:260) at weblogic.application.descriptor.AbstractDescriptorLoader2.getDescriptorBeanFromReader(AbstractDescriptorLoader2.java:774) at weblogic.application.descriptor.AbstractDescriptorLoader2.createDescriptorBean(AbstractDescriptorLoader2.java:397) at weblogic.application.descriptor.AbstractDescriptorLoader2.loadDescriptorBeanWithoutPlan(AbstractDescriptorLoader2.java:745) at weblogic.application.descriptor.AbstractDescriptorLoader2.loadDescriptorBean(AbstractDescriptorLoader2.java:754) at weblogic.deployment.AbstractPersistenceUnitRegistry.loadPersistenceDescriptor(AbstractPersistenceUnitRegistry.java:157) at weblogic.deployment.AbstractPersistenceUnitRegistry.loadPersistenceDescriptors(AbstractPersistenceUnitRegistry.java:86) at weblogic.deployment.PersistenceUnitViewer$ResourceViewer.loadDescriptors(PersistenceUnitViewer.java:41) at weblogic.application.compiler.WARModule.merge(WARModule.java:438) at weblogic.application.compiler.flow.SingleModuleMergeFlow.proecessModule(SingleModuleMergeFlow.java:16) at weblogic.application.compiler.flow.SingleModuleFlow.compile(SingleModuleFlow.java:31) at weblogic.application.compiler.FlowDriver$FlowStateChange.next(FlowDriver.java:69) at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:26) at weblogic.application.compiler.FlowDriver.nextState(FlowDriver.java:36) at weblogic.application.compiler.FlowDriver$CompilerFlowDriver.compile(FlowDriver.java:96) at weblogic.application.compiler.ReadOnlyWarMerger.merge(ReadOnlyWarMerger.java:27) at weblogic.application.compiler.flow.AppMergerFlow.mergeInput(AppMergerFlow.java:94) at weblogic.application.compiler.flow.AppMergerFlow.compile(AppMergerFlow.java:47) at weblogic.application.compiler.FlowDriver$FlowStateChange.next(FlowDriver.java:69) at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:26) at weblogic.application.compiler.FlowDriver.nextState(FlowDriver.java:36) at weblogic.application.compiler.FlowDriver$CompilerFlowDriver.compile(FlowDriver.java:96) at weblogic.application.compiler.AppMerge.runBody(AppMerge.java:137) at weblogic.utils.compiler.Tool.run(Tool.java:158) at weblogic.utils.compiler.Tool.run(Tool.java:115) at weblogic.application.compiler.AppMerge.merge(AppMerge.java:149) at weblogic.deploy.api.internal.utils.AppMerger.merge(AppMerger.java:70) at weblogic.deploy.api.internal.utils.AppMerger.getMergedApp(AppMerger.java:51) at weblogic.deploy.api.model.internal.WebLogicDeployableObjectFactoryImpl.createDeployableObject(WebLogicDeployableObjectFactoryImpl.java:177) at weblogic.deploy.api.model.internal.WebLogicDeployableObjectFactoryImpl.createLazyDeployableObject(WebLogicDeployableObjectFactoryImpl.java:150) Caused by: com.bea.xml.XmlException: failed to load java type corresponding to e=persistence at com.bea.staxb.runtime.internal.UnmarshalResult.getPojoBindingType(UnmarshalResult.java:329) at com.bea.staxb.runtime.internal.UnmarshalResult.determineTypeForGlobalElement(UnmarshalResult.java:296) at com.bea.staxb.runtime.internal.UnmarshalResult.determineTypeForGlobalElement(UnmarshalResult.java:306) at com.bea.staxb.runtime.internal.UnmarshalResult.determineRootType(UnmarshalResult.java:287) at com.bea.staxb.runtime.internal.UnmarshalResult.unmarshalDocument(UnmarshalResult.java:153) at com.bea.staxb.runtime.internal.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:65) at weblogic.descriptor.internal.MarshallerFactory$1.createDescriptor(MarshallerFactory.java:141) at weblogic.descriptor.BasicDescriptorManager.createDescriptor(BasicDescriptorManager.java:292) at weblogic.descriptor.BasicDescriptorManager.createDescriptor(BasicDescriptorManager.java:260) at weblogic.application.descriptor.AbstractDescriptorLoader2.getDescriptorBeanFromReader(AbstractDescriptorLoader2.java:774) at weblogic.application.descriptor.AbstractDescriptorLoader2.createDescriptorBean(AbstractDescriptorLoader2.java:397) at weblogic.application.descriptor.AbstractDescriptorLoader2.loadDescriptorBeanWithoutPlan(AbstractDescriptorLoader2.java:745) at weblogic.application.descriptor.AbstractDescriptorLoader2.loadDescriptorBean(AbstractDescriptorLoader2.java:754) at weblogic.deployment.AbstractPersistenceUnitRegistry.loadPersistenceDescriptor(AbstractPersistenceUnitRegistry.java:157) at weblogic.deployment.AbstractPersistenceUnitRegistry.loadPersistenceDescriptors(AbstractPersistenceUnitRegistry.java:86) at weblogic.deployment.PersistenceUnitViewer$ResourceViewer.loadDescriptors(PersistenceUnitViewer.java:41) at weblogic.application.compiler.WARModule.merge(WARModule.java:438) at weblogic.application.compiler.flow.SingleModuleMergeFlow.proecessModule(SingleModuleMergeFlow.java:16) at weblogic.application.compiler.flow.SingleModuleFlow.compile(SingleModuleFlow.java:31) at weblogic.application.compiler.FlowDriver$FlowStateChange.next(FlowDriver.java:69) at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:26) at weblogic.application.compiler.FlowDriver.nextState(FlowDriver.java:36) at weblogic.application.compiler.FlowDriver$CompilerFlowDriver.compile(FlowDriver.java:96) at weblogic.application.compiler.ReadOnlyWarMerger.merge(ReadOnlyWarMerger.java:27) at weblogic.application.compiler.flow.AppMergerFlow.mergeInput(AppMergerFlow.java:94) at weblogic.application.compiler.flow.AppMergerFlow.compile(AppMergerFlow.java:47) at weblogic.application.compiler.FlowDriver$FlowStateChange.next(FlowDriver.java:69) at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:26) at weblogic.application.compiler.FlowDriver.nextState(FlowDriver.java:36) at weblogic.application.compiler.FlowDriver$CompilerFlowDriver.compile(FlowDriver.java:96) at weblogic.application.compiler.AppMerge.runBody(AppMerge.java:137) at weblogic.utils.compiler.Tool.run(Tool.java:158) | | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4032836#... 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