SAP J2EE Engine Failures: Entity Java Bean Container 

Use

Session Beans and Entity Beans

Session Enterprise Java Beans (EJBs) in the J2EE Engine 6.30 work locally and independently of each other. They are not clustered and do not communicate with other session EJBs on other server nodes in the cluster.

Entity EJBs, as opposed to session EJBs, are clustered. Since all entity EJBs are deployed on all server nodes in the cluster, each of these nodes contains instances of this bean.

Container-Managed Entity Beans

For more information on the impact of such failures, see “Enqueue Service” in SAP J2EE Engine Failures: Central System Services