After copying the oracle-ds.xml in jobss's server/default directory, when I start the server, I get the following in the logs: ConnectionFactoryBindingService] Bound ConnectionManager 'jboss.jca:service=DataSourceBinding,name=OracleDS' to JNDI name 'java:OracleDS' and then later on in the logs I get the exception Caused by: javax.persistence.PersistenceException: org.hibernate.HibernateException: Could not find datasource: java:/OracleDS at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:737) at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:121) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:51) at org.jboss.seam.persistence.EntityManagerFactory.createEntityManagerFactory(EntityManagerFactory.java:85) at org.jboss.seam.persistence.EntityManagerFactory.startup(EntityManagerFactory.java:50) 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:585) at org.jboss.seam.util.Reflections.invoke(Reflections.java:21) at org.jboss.seam.util.Reflections.invokeAndWrap(Reflections.java:125) at org.jboss.seam.Component.callComponentMethod(Component.java:2100) at org.jboss.seam.Component.callCreateMethod(Component.java:2015) at org.jboss.seam.Component.newInstance(Component.java:1976) I checked my JMX console and verified that the Datasource has been setup properly. Can someone please help in identifying what I am missing? I have all the latest Hibernate and Persistence related jar files in the jboss lib directory. Thanks Chander View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4165963#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...