Load Balancing Oracle WebLogic Server
The Forms Listener servlet architecture allows you to load balance the system using any of the standard HTTP load balancing techniques available.
The Oracle HTTP Server Listener provides a load balancing mechanism that allows you to run multiple WebLogic instances on the same host as the HTTP process, on multiple, different hosts, or on any combination of hosts. The HTTP Listener then routes HTTP requests to Oracle WebLogic Managed Server instances.
The following scenarios are just a few of the possible combinations available and are intended to show you some possibilities. The best choice for your site will depend on many factors. For a complete description of this feature, see Monitoring in Tuning Performance.
The following images show four possible deployment scenarios.
Figure -19 Multiple Oracle WebLogic Servers on the same host as the Oracle HTTP Listener

Description of "Figure -19 Multiple Oracle WebLogic Servers on the same host as the Oracle HTTP Listener"
Figure -20 Multiple Oracle WebLogic Servers on a different host to the Oracle HTTP Listener

Description of "Figure -20 Multiple Oracle WebLogic Servers on a different host to the Oracle HTTP Listener"
Figure -21 Multiple Oracle WebLogic Servers and multiple Oracle HTTP Listeners on different hosts

Description of "Figure -21 Multiple Oracle WebLogic Servers and multiple Oracle HTTP Listeners on different hosts"
Figure -22 Multiple Oracle HTTP Listeners on different hosts with multiple Oracle WebLogic Servers on one host

Description of "Figure -22 Multiple Oracle HTTP Listeners on different hosts with multiple Oracle WebLogic Servers on one host"
Note:
To tune and optimize Forms Services with the HTTP Listener and Oracle WebLogic Server, see Tuning Oracle HTTP Server in Tuning Performance Guide.