13 EJB Clustering

The methods for providing clustering—including load balancing and failover—are different for HTTP requests than for EJB communications because Web components use different protocols than EJB components. This chapter specifically discusses EJB clustering. For a complete overview of Oracle Application Server clustering—including the instructions for setting up the HTTP failover and load balancing environment—see the clustering chapter in the Oracle Application Server Containers for J2EE User's Guide.

The following is discussed in this chapter:

• EJB Clustering Overview

• Enabling Clustering For EJBs

• EJB Clustering Includes JNDI Namespace Replication

• Load Balancing Options