According to the spec "Clients are not allowed to make concurrent calls to a stateful session object. If a client-invoked business method is in progress on an instance when another client-invoked call, from the same or different client, arrives at the same instance of a stateful session bean class, the container may throw the java.rmi.RemoteException to the second client, if the client is a remote client, or the javax.ejb.EJBException, if the client is a local client."
Also when a system excepion is thrown, the bean is destroyed.
Consider the scenario: Client A calls methodA() on a stateful bean. Assuming there is a second thread from the client calls the methodA() of the same instance of stateful bean. Since in this scenario a RemoteException is thrown, the bean will be destroyed.
If so what happens to the first call on methodA() ? Will it also fail ?