Enabling EJB workload management

 

Since EJB workload management means sharing the load among multiple appservers, this functionality is not available in IBM WAS Base V5.1, or IBM WAS for Developers V5.1, because these can run only one application server each.

In IBM WAS Network Deployment V5.x, workload management for EJBs is enabled automatically when a cluster is created within a cell. There is no need for a special configuration to enable it. Workload management uses a WLM plug-in in the Object Request Broker to dispatch the load among the appservers (cluster members) of the cluster.

Figure 6-1 shows how workload management is handled by IBM WAS Network Deployment V5.x.

Figure 6-1 IBM WAS V5.1 EJB workload management

IBM WAS Network Deployment V5.x uses the concept of cell, cluster, and cluster members to identify which appservers participate in workload management. Requests from clients are distributed among the cluster members' EJB containers within the cluster.

The WebSphere-supplied JRE is required for both the runtime and any remote Java clients.

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