Copyright © 2013, 2016, Oracle and/or its affiliates. All rights reserved.
The figure shows the system availability region, which is divided into the following subregions:
Availability: Lists the severs in the system, their type, and shows whether they are up, down, or unreachable.
Availability of Managed Servers for Last 24 Hours: Lists the servers and shows a bar with green representing up time and red representing down time. Also shows the percentage of time the server has been up over the last 24 hours.