Hello Folks I have a rather basic question concerning the deployment of EJB3 beans. My application consists of three projects: shopdemo-data, shopdemo-business and shopdemo-web, all packaged within their own jars (or war for the web package). I have packaged all three of those archives inside one ear which contains the following application.xml file in the META-INF directory. <?xml version="1.0" encoding="UTF-8"?> | <application xmlns="http://java.sun.com/xml/ns/j2ee" | xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="1.4" | xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee | http://java.sun.com/xml/ns/j2ee/application_1_4.xsd"> | <display-name>shopdemo</display-name> | <module id="myeclipse.1168274010125"> | <web> | <web-uri>shopdemo-web.war</web-uri> | <context-root>/shopdemo</context-root> | </web> | </module> | <module id="myeclipse.1168274038515"> | <ejb>shopdemo-business.jar</ejb> | </module> | <module id="myeclipse.1168274010281"> | <ejb>shopdemo-data.jar</ejb> | </module> | </application> My session beans in the business project get properly deployed as well as the entity beans in the data project. They are all registered as expected. (imo) The Problem comes when i access my stateless session beans which in turn try to access the entity beans. When i do that, i get the following error: | Exception in thread "main" javax.ejb.EJBException: java.lang.IllegalArgumentException: Unknown entity: de.iplabs.shop.data.Product | at org.jboss.ejb3.tx.Ejb3TxPolicy.handleExceptionInOurTx(Ejb3TxPolicy.java:69) | at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:83) | at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:191) | 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:102) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47) | 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:263) | 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:828) | at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:681) | at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:358) | at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:398) | at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:239) | Caused by: java.lang.IllegalArgumentException: Unknown entity: de.iplabs.shop.data.Product | at org.hibernate.ejb.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:215) | at org.jboss.ejb3.entity.TransactionScopedEntityManager.persist(TransactionScopedEntityManager.java:175) | at de.iplabs.shop.business.ProductManagerBean.createNewProduct(ProductManagerBean.java:32) | at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) | at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) | at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) | at java.lang.reflect.Method.invoke(Unknown Source) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:112) | at org.jboss.ejb3.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:166) | at org.jboss.ejb3.interceptor.EJB3InterceptorsInterceptor.invoke(EJB3InterceptorsInterceptor.java:63) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEntityManagerInterceptor.java:54) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:46) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:79) | at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:191) | 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:102) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47) | 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:263) | 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:828) | at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:681) | at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:358) | at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:398) | at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:239) | at org.jboss.remoting.RemoteClientInvoker.invoke(RemoteClientInvoker.java:190) | at org.jboss.remoting.Client.invoke(Client.java:525) | at org.jboss.remoting.Client.invoke(Client.java:488) | at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:55) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | at org.jboss.aspects.tx.ClientTxPropagationInterceptor.invoke(ClientTxPropagationInterceptor.java:61) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | at org.jboss.aspects.security.SecurityClientInterceptor.invoke(SecurityClientInterceptor.java:53) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | at org.jboss.ejb3.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:77) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | at org.jboss.ejb3.stateless.StatelessRemoteProxy.invoke(StatelessRemoteProxy.java:102) | at $Proxy1.createNewProduct(Unknown Source) | at de.iplabs.shop.client.ShopClient.main(ShopClient.java:31) | So i guess the entity beans from the data package are not know to the session beans in the buisiness package. Btw... when i put the entity beans and the session beans in one .jar inside the .ear, they find each other as expected. I hope anybody can help me out. thanks in advance. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3999229#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...