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:
Section 30.1, "About Clusters and High Availability Features"
Section 30.2, "Using Clusters with Oracle Fusion Middleware"
Section 30.3, "Using High Availability Features with Oracle Fusion Middleware"
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.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
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:
In addition to using a clustered architecture within your Fusion Middleware components, there are a number of high availability features available to ensure that your applications are continuously accessible by the users.
For more information, see the Oracle Fusion Middleware High Availability Guide.