This image shows a screen capture of the Oracle Application Server 10g Release 3 (10.1.3) Cluster Topology page. This page has three sections:

- The Overview section, which provides a summary of how many hosts, application server instances, OC4J instances, and Oracle HTTP Server instances there are in the cluster.

- The Members section, which contains a table that shows the application servers, OC4J instances, and Oracle HTTP Server instances in a hierachical list. You can expand or collapse each node in the list to see more information.

  You can also click the name of an OC4J instance to display the OC4J Home page; or, you can click the name of an application server to show the Application Servers page. The table also summarizes the status, host, CPU usage, and memory usage for each component in the cluster. Start, Stop, and Restart buttons are available across the top of the table, so you can start and stop selected members of the cluster.

- The Groups section, which lists any groups within the cluster. For each group, this section provides the status and the names of the applications servers that host the OC4J instances in the group. You can start or stop a selected group; or you can drill down to the Group home page by clicking the name of a group.