I am testing a session bean by a client. and I keep getting this error, I know my code should work because I wrote the same code last week. this is the error | xception in thread "main" javax.ejb.EJBTransactionRolledbackException: EntityManager must be access within a transaction | at org.jboss.ejb3.tx.Ejb3TxPolicy.handleInCallerTx(Ejb3TxPolicy.java:87) | at org.jboss.aspects.tx.TxPolicy.invokeInCallerTx(TxPolicy.java:130) | at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:195) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:62) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:77) | at org.jboss.ejb3.security.Ejb3AuthenticationInterceptor.invoke(Ejb3AuthenticationInterceptor.java:106) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:46) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | at org.jboss.ejb3.stateless.StatelessContainer.dynamicInvoke(StatelessContainer.java:278) | at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:106) | at org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandler.java:82) | at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:734) | at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:560) | at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:369) | at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:165) | Caused by: javax.persistence.TransactionRequiredException: EntityManager must be access within a transaction | at org.jboss.ejb3.entity.ManagedEntityManagerFactory.verifyInTx(ManagedEntityManagerFactory.java:150) | This is my main ... all i want to do is add an object in an table | | public class KBClient { | | public static void main(String[] args) { | | KBClient c = new KBClient(); | ClassificationRemote r = c.lookupNewClassificationBean(); | KnowledgeBase first = new KnowledgeBase(); | first.setKnowledgeID(200); | first.setKnowledgeName("AmerDemo"); | first.setKnowledgeCategory("Classification"); | first.setProjectID(new Project(88)); | first.setDeleted(0); | r.addKnowledgeBase(first); //Exception occurs | } | | private ClassificationRemote lookupNewClassificationBean() { | try { | Hashtable props = new Hashtable(); | props.put("java.naming.factory.initial", "org.jnp.interfaces.NamingContextFactory"); | props.put("java.naming.factory.url.pkgs", "org.jboss.naming:org.jnp.interfaces"); | props.put("java.naming.provider.url", "localhost"); | Context c = new InitialContext(props); | return (ClassificationRemote) c.lookup("ClassificationBeanFinal/remote"); | } | catch(NamingException ne) { | Logger.getLogger(getClass().getName()).log(Level.SEVERE,"exception caught" ,ne); | throw new RuntimeException(ne); | } | } | } | | and This is the function in the session bean | | @PersistenceContext private EntityManager em; | | public void addKnowledgeBase(KnowledgeBase kb){ | System.out.println("YAAAHOOOOOOO"); | em.persist(kb); | } | I checked the JNDI tree as well ... everything is fine the exception occurs when adding to the table in main. Please help me !!! Thanks View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4088558#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...