Chapter 8 Creating J2EE Applications for BEA WebLogic
In a WebLogic Server cluster, the server-side representation of the EJBObject can also be replaced by a replica-aware EJBObject stub. This stub maintains knowledge of all copies of the EJBObject that reside on servers in the cluster. The EJBObject stub can provide load balancing and failover services for EJB method calls. For example, if a client invokes an EJB method call on a particular WebLogic Server and the server goes down, the EJBObject stub can failover the method call to another, running server.
Whether or not an EJB can use a replica-aware EJBObject stub depends on the type of EJB deployed and, for entity EJBs, the cache strategy selected at deployment time.
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