Exception while deploying my JPA-application to Websphere 7

Question

I have problems deploying a web application to the most recent version of IBM Websphere 7. The exception is caused during the JPA initialization. The application is using servlet 2.5, eclipselink 2.1.3, java 6 update 25. persistence.xml is using version 1.0

I am unsure, if this exception is caused by a bug/configuration error in Websphere or by my application. Maybe it's also related to eclipselink.

UPDATE

Our application does not use JNDI for providing datasources to EclipseLink. Our application passes the DataSource directly to EclipseLink (using EclipseLink specific EntityManager properties)

The persistence.xml I am using is (leaving out all entity definitions and tuning properties):

<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd"
  version="1.0">
  <persistence-unit name="default" transaction-type="RESOURCE_LOCAL">
    <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
    <non-jta-data-source></non-jta-data-source>
    <class>my.applications.entity.classes.A</class>
    <!-- other class definitions follow -->
    <properties>
      <property name="eclipselink.logging.level" value="FINEST" />

      <!-- some other properties, not related to datasources/connections/JNDI 
        follow -->
    </properties>
  </persistence-unit>
</persistence>

Here comes the System.err output:

com.ibm.ws.exception.RuntimeWarning: com.ibm.ws.metadata.MetaDataException: CWWJP0018E: Incorrect syntax or error detected in /path/to/my/project/my_application_war.ear/my_application.war/WEB-INF/classes/ for application my_application_war module my_application.war. The following associated error occurred:
    at com.ibm.ws.jpa.management.JPAApplInfo.processModulePUs(JPAApplInfo.java:185)
    at com.ibm.ws.jpa.management.JPAComponentImpl.startingDeployedModule(JPAComponentImpl.java:895)
    at com.ibm.ws.jpa.management.JPAComponentImpl.stateChanged(JPAComponentImpl.java:748)
    at com.ibm.ws.runtime.component.ApplicationMgrImpl.stateChanged(ApplicationMgrImpl.java:1075)
    at com.ibm.ws.runtime.component.DeployedApplicationImpl.fireDeployedObjectEvent(DeployedApplicationImpl.java:1302)
    at com.ibm.ws.runtime.component.DeployedModuleImpl.setState(DeployedModuleImpl.java:221)
    at com.ibm.ws.runtime.component.DeployedModuleImpl.start(DeployedModuleImpl.java:607)
    at com.ibm.ws.runtime.component.DeployedApplicationImpl.start(DeployedApplicationImpl.java:944)
    at com.ibm.ws.runtime.component.ApplicationMgrImpl.startApplication(ApplicationMgrImpl.java:726)
    at com.ibm.ws.runtime.component.ApplicationMgrImpl$1.run(ApplicationMgrImpl.java:1268)
    at com.ibm.ws.security.auth.ContextManagerImpl.runAs(ContextManagerImpl.java:4588)
    at com.ibm.ws.security.auth.ContextManagerImpl.runAsSystem(ContextManagerImpl.java:4766)
    at com.ibm.ws.security.core.SecurityContext.runAsSystem(SecurityContext.java:255)
    at com.ibm.ws.runtime.component.ApplicationMgrImpl.startApplicationDynamically(ApplicationMgrImpl.java:1273)
    at com.ibm.ws.runtime.component.ApplicationMgrImpl.start(ApplicationMgrImpl.java:2045)
    at com.ibm.ws.runtime.component.CompositionUnitMgrImpl.start(CompositionUnitMgrImpl.java:441)
    at com.ibm.ws.runtime.component.CompositionUnitImpl.start(CompositionUnitImpl.java:123)
    at com.ibm.ws.runtime.component.CompositionUnitMgrImpl.start(CompositionUnitMgrImpl.java:384)
    at com.ibm.ws.runtime.component.CompositionUnitMgrImpl.startCompositionUnit(CompositionUnitMgrImpl.java:655)
    at com.ibm.ws.runtime.component.CompositionUnitMgrImpl.startCompositionUnit(CompositionUnitMgrImpl.java:617)
    at com.ibm.ws.runtime.component.ApplicationMgrImpl.startApplication(ApplicationMgrImpl.java:1180)
    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 sun.reflect.misc.Trampoline.invoke(MethodUtil.java:37)
    at sun.reflect.GeneratedMethodAccessor27.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:244)
    at javax.management.modelmbean.RequiredModelMBean.invokeMethod(RequiredModelMBean.java:1074)
    at javax.management.modelmbean.RequiredModelMBean.invoke(RequiredModelMBean.java:955)
    at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:836)
    at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:761)
    at com.ibm.ws.management.AdminServiceImpl$1.run(AdminServiceImpl.java:1332)
    at com.ibm.ws.security.util.AccessController.doPrivileged(AccessController.java:118)
    at com.ibm.ws.management.AdminServiceImpl.invoke(AdminServiceImpl.java:1225)
    at com.ibm.ws.management.commands.AdminServiceCommands$InvokeCmd.execute(AdminServiceCommands.java:251)
    at com.ibm.ws.console.core.mbean.MBeanHelper.invoke(MBeanHelper.java:239)
    at com.ibm.ws.console.appdeployment.ApplicationDeploymentCollectionAction.execute(ApplicationDeploymentCollectionAction.java:564)
    at org.apache.struts.action.RequestProcessor.processActionPerform(Unknown Source)
    at org.apache.struts.action.RequestProcessor.process(Unknown Source)
    at org.apache.struts.action.ActionServlet.process(Unknown Source)
    at org.apache.struts.action.ActionServlet.doPost(Unknown Source)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:738)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1657)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1597)
    at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:104)
    at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:77)
    at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:908)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:934)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:502)
    at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:179)
    at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:353)
    at org.apache.struts.action.RequestProcessor.doForward(Unknown Source)
    at org.apache.struts.tiles.TilesRequestProcessor.doForward(Unknown Source)
    at org.apache.struts.action.RequestProcessor.processForwardConfig(Unknown Source)
    at org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig(Unknown Source)
    at com.ibm.isclite.container.controller.InformationController.processForwardConfig(InformationController.java:217)
    at org.apache.struts.action.RequestProcessor.process(Unknown Source)
    at org.apache.struts.action.ActionServlet.process(Unknown Source)
    at org.apache.struts.action.ActionServlet.doPost(Unknown Source)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:738)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1657)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1597)
    at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:131)
    at com.ibm.ws.console.core.servlet.WSCUrlFilter.setUpCommandAssistence(WSCUrlFilter.java:933)
    at com.ibm.ws.console.core.servlet.WSCUrlFilter.continueStoringTaskState(WSCUrlFilter.java:500)
    at com.ibm.ws.console.core.servlet.WSCUrlFilter.doFilter(WSCUrlFilter.java:321)
    at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:188)
    at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:116)
    at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:77)
    at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:908)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:934)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:502)
    at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:179)
    at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:91)
    at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:864)
    at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1583)
    at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:186)
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:452)
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:511)
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:305)
    at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:83)
    at com.ibm.ws.tcp.channel.impl.WorkQueueManager.requestComplete(WorkQueueManager.java:557)
    at com.ibm.ws.tcp.channel.impl.WorkQueueManager.attemptIO(WorkQueueManager.java:607)
    at com.ibm.ws.tcp.channel.impl.WorkQueueManager.workerRun(WorkQueueManager.java:984)
    at com.ibm.ws.tcp.channel.impl.WorkQueueManager$Worker.run(WorkQueueManager.java:1069)
    at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1604)
Caused by: com.ibm.ws.metadata.MetaDataException: CWWJP0018E: Incorrect syntax or error detected in path/to/my/project/my_application_war.ear/my_application.war/WEB-INF/classes/ for application my_application_war module my_application.war. The following associated error occurred:
    at com.ibm.ws.jpa.management.JPAPxmlInfo.extractPersistenceUnits(JPAPxmlInfo.java:449)
    at com.ibm.ws.jpa.management.JPAScopeInfo.processPersistenceUnit(JPAScopeInfo.java:140)
    at com.ibm.ws.jpa.management.JPAApplInfo.processModulePUs(JPAApplInfo.java:169)
    ... 90 more
Caused by: java.lang.ClassCastException: com.ibm.ws.naming.jndicos.CNContextImpl cannot be cast to javax.sql.DataSource
    at com.ibm.ws.jpa.management.JPAPUnitInfo.getJPADataSource(JPAPUnitInfo.java:493)
    at com.ibm.ws.jpa.management.JPAPUnitInfo.getNonJtaDataSource(JPAPUnitInfo.java:577)
    at com.ibm.ws.jpa.management.JPAPUnitInfo.createEntityManagerFactory(JPAPUnitInfo.java:1314)
    at com.ibm.ws.jpa.management.JPAPxmlInfo.extractPersistenceUnits(JPAPxmlInfo.java:393)
    ... 92 more

Answer 1

The empty non-jta-data-source is causing WebSphere Application Server to perform a lookup(""), which returns the root context, which it then attempts to cast to DataSource.

Container-managed JPA is designed for the container to acquire the data source and pass it to the EM itself. I would recommend that you either specify your data source in persistence.xml, or just disable container-managed JPA altogether to avoid the error during application start:

http://www-01.ibm.com/support/docview.wss?uid=swg1PM26361

Answer 2

Websphere seems to be validating your data-source value in your persistence.xml, and it seems to be invalid. You need to specify a valid value, even if you are overriding it later.

Please include your persistence.xml. You could also try not setting a data-source, or using resource_local if it does not allow no data-source.

Answer 3

Caused by: java.lang.ClassCastException: com.ibm.ws.naming.jndicos.CNContextImpl cannot be cast to javax.sql.DataSource
    at com.ibm.ws.jpa.management.JPAPUnitInfo.getJPADataSource(JPAPUnitInfo.java:493)
    at com.ibm.ws.jpa.management.JPAPUnitInfo.getNonJtaDataSource(JPAPUnitInfo.java:577)
    at com.ibm.ws.jpa.management.JPAPUnitInfo.createEntityManagerFactory(JPAPUnitInfo.java:1314)
    at com.ibm.ws.jpa.management.JPAPxmlInfo.extractPersistenceUnits(JPAPxmlInfo.java:393)
    ... 92 more

In your EAR config you have set a JNDI context where there should be a JNDI DataSource