Introduction

WebLogic clustering is a highly recommended configuration for production environments. The WebLogic cluster provides reliability and high availability by distributing the requests and the load to the WebLogic Server instance members of the cluster.

Using WebLogic cluster also facilitates the administration tasks because WebLogic Server automatically distributes the configuration and deployment changes to all WebLogic Server instances, including the distribution of the deploy file to all machines.

Clustering can also avoid a single point of failure. If a machine crashes, the system can still operate with the WebLogic Manager Servers of the other machines. The architecture can grow and scale horizontally by adding more WebLogic Server instances to the cluster and distributing them to new machines.