As I can see this topic has already been discussed, but I have not found a solution
of my trouble yet.

I use JBoss 3.0.4
I have developed .jar with CMP and session bean (session facade) for that CMP.
When I start and stop JBoss (almost :) everything works fine, but after hot redeployment
I catch a ClassCastException in
this.mlsTreeLocalHome = (MlsTreeLocalHome) locator.getLocalHome(ENTITY_NAME);


source code is
//-------------------------------------------------------
final String ENTITY_NAME = "java:comp/env/ejb/MlsTreeBean";
try {
Properties props = new Properties();
ServiceLocator locator = new ServiceLocator(props);
this.mlsTreeLocalHome = (MlsTreeLocalHome) locator.getLocalHome(ENTITY_NAME);
// ClassCastException raises here after hot redeployment
}
catch (ServiceLocatorException e) {
log.error("<findMlsTreeBeanHome()>: ServiceLocatorException. " + e.getMessage());
throw new RemoteException(e.getMessage());
}
catch (ClassCastException e1) {
log.error("<findMlsTreeBeanHome()>: ClassCastException. " + e1.getMessage());
throw new RemoteException(e1.getMessage());
}
//-------------------------------------------------------
StackTrace is
//-------------------------------------------------------
14:26:33,785 ERROR [org.jboss.ejb.plugins.LogInterceptor] RuntimeException:

java.lang.ClassCastException

at ru.mgr.mls.cmp.mlstree.MlsTreeBeanSessionFacadeBean.findMlsTreeBeanHome(MlsTreeBeanSessionFacadeBean.java:53)

at ru.mgr.mls.cmp.mlstree.MlsTreeBeanSessionFacadeBean.setSessionContext(MlsTreeBeanSessionFacadeBean.java:35)

at org.jboss.ejb.StatefulSessionEnterpriseContext.(StatefulSessionEnterpriseContext.java:51)

at org.jboss.ejb.plugins.StatefulSessionInstancePool.create(StatefulSessionInstancePool.java:51)

at org.jboss.ejb.plugins.AbstractInstancePool.get(AbstractInstancePool.java:209)

at org.jboss.ejb.plugins.StatefulSessionInstanceInterceptor.invokeHome(StatefulSessionInstanceInterceptor.java:113)

at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:111)

at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:178)

at org.jboss.ejb.plugins.TxInterceptorCMT.invokeHome(TxInterceptorCMT.java:52)

at org.jboss.ejb.plugins.LogInterceptor.invokeHome(LogInterceptor.java:129)

at org.jboss.ejb.StatefulSessionContainer.invokeHome(StatefulSessionContainer.java:368)

at org.jboss.ejb.Container.invoke(Container.java:730)

at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:517)

at org.jboss.invocation.jrmp.server.JRMPInvoker.invoke(JRMPInvoker.java:382)

at sun.reflect.GeneratedMethodAccessor73.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:324)

at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:261)

at sun.rmi.transport.Transport$1.run(Transport.java:148)

at java.security.AccessController.doPrivileged(Native Method)

at sun.rmi.transport.Transport.serviceCall(Transport.java:144)

at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460)

at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:701)

at java.lang.Thread.run(Thread.java:536)