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Oracle® Fusion Middleware Performance and Tuning Guide
11g Release 1 (11.1.1.7.0)

Part Number E10108-13
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30 Using Clusters and High Availability Features

A high availability architecture is one of the key requirements for any Enterprise Deployment. Oracle Fusion Middleware has an extensive set of high availability features, which protect its components and applications from unplanned down time and minimize planned downtime.

This chapter provides an overview of the architecture, interaction, and dependencies of Oracle Fusion Middleware components, and explains how they can be deployed in a high availability architecture to maximize performance.

This chapter includes the following sections:

Note:

Using clusters and other high availability options is a complex and detailed process. This chapter is meant to introduce the concepts as they relate to Oracle Fusion Middleware. Table 30-1 provides a list of Oracle Fusion Middleware guides that contain detailed high availability information.

30.1 About Clusters and High Availability Features

One of the most important factors in both high availability and performance is the use of clusters. A cluster is a set of processes running on single or multiple computers that share the same workload. Using a clustered configuration promotes scalability, high availability, and performance.

High availability refers to the ability of users to access a system without loss of service. Deploying a high availability system minimizes the time when the system is down, or unavailable and maximizes the time when it is running, or available. See

Details about using clusters and other high availability features can be located in the application-specific guides listed in Table 30-1:

Table 30-1 Clusters and High Availability Information in Oracle Fusion Middleware Documentation

Component Location of Information

Oracle Fusion Middleware

Oracle Fusion Middleware Administrator's Guide

Oracle WebLogic Server

Oracle Fusion Middleware Using Clusters for Oracle WebLogic Server

Oracle Fusion Middleware Performance and Tuning for Oracle WebLogic Server

Oracle SOA Suite

The Oracle Fusion Middleware Administrator's Guide for Oracle SOA Suite and Oracle Business Process Management Suite

The Oracle Fusion Middleware Enterprise Deployment Guide for Oracle SOA Suite

Oracle WebCenter

The Oracle Fusion Middleware Administrator's Guide for Oracle WebCenter Portal

The Oracle Fusion Middleware Enterprise Deployment Guide for Oracle WebCenter Portal

Oracle ADF

The Oracle Fusion Middleware Fusion Developer's Guide for Oracle Application Development Framework

The Oracle Fusion Middleware Web User Interface Developer's Guide for Oracle Application Development Framework

Oracle Fusion Middleware Backup and Recovery

The Oracle Fusion Middleware Administrator's Guide

Oracle Web Cache

The Oracle Fusion Middleware Administrator's Guide for Oracle Web Cache

Oracle Identity Management

The Oracle Fusion Middleware Installation Guide for Oracle Identity Management

The Oracle Fusion Middleware Enterprise Deployment Guide for Oracle Identity Management

Oracle Virtual Directory

The Oracle Fusion Middleware Administrator's Guide for Oracle Virtual Directory

Oracle HTTP Server

The Oracle Fusion Middleware Administrator's Guide for Oracle HTTP Server

Oracle Internet Directory

The Oracle Fusion Middleware Administrator's Guide for Oracle Internet Directory

Oracle Repository Creation Utility (RCU)

The Oracle Fusion Middleware Repository Creation Utility User's Guide

Oracle Portal

The Oracle Fusion Middleware Administrator's Guide for Oracle Portal


30.2 Using Clusters with Oracle Fusion Middleware

For production environments that require increased application performance, throughput, or high availability, you can configure two or more Managed Servers to operate as a cluster. A cluster is a collection of multiple Oracle WebLogic Server server instances running simultaneously and working together to provide increased scalability and reliability.

For more information on using clusters with Oracle Fusion Middleware, see the following:

30.3 Using High Availability Features with Oracle Fusion Middleware

In addition to using a clustered architecture within your Fusion Middleware components, there are a number of high availability features built-in to ensure your applications are continuously accessible by the users. The following list provides a few options for setting up a comprehensive high availability system. The options that you integrate depend on your overall performance goals as well as your system architecture. This list is meant to provide examples only.

For more information see the Oracle Fusion Middleware High Availability Guide.