Configuring Static Retrieval Load Balancing

To use static retrieval of OC4J instances for load balancing, do the following:

1. Within each client, configure JNDI properties as follows (see "Using JNDI Properties":

   • For java.naming.factory.initial, use any initial context factory.

   • For the java.naming.provider.url, provide a comma-delimited list of OC4J nodes in the form <prefix>://<hostname>:<port>/<application-name> where <prefix> is opmn:ormi for OC4J in Oracle Application Server, or ormi for OC4J standalone.

2. Configure load balancing behavior (see "Configuring Load Balancing Behavior").

For more information, see the following:

• "Load Balancing"

• "Configuring the Naming Provider URL for OC4J and Oracle Application Server"

• "Configuring the Naming Provider URL for OC4J Standalone"

Using JNDI Properties

Example 24-2 shows a URL definition that provides the client container with three OC4J nodes (with hostnames s1, s2, and s3 and ports 23791, 23792, and 23793, respectively) to use for load balancing.

Example 24-2 JNDI Properties for Static Retrieval Load Balancing

java.naming.factory.initial= oracle.j2ee.rmi.RMIInitialContextFactory
java.naming.provider.url=ormi://s1:23791/ejbs, ormi://s2:23792/ejbs, ormi://s3:23793/ejbs; 
java.naming.security.principal=admin
java.naming.security.credentials=welcome