Ensuring high availability for Fusion web applications

High availability for an application refers to the ability to keep a system continuously operational for a desirably long period of time. Ensuring high availability is a top priority for many enterprise applications nowadays. The following are the points you must consider when you need to build highly available Fusion web applications:

• If you want to enable high availability for your application and want to deploy it in a clustered environment, you have to select the High Availability for ADF Scopes option in the adf-config.xml editor under the Controller tab. If you select this option, at runtime, the ADF Controller will track changes to the ADF memory scopes and replicate the page flow scope and view scope objects within the server cluster:

  <adf-config ...
    <adf-controller-config xmlns="http://xmlns.oracle.com/adf/controller/config">
      <adf-scope-ha-support>true</adf-scope-ha-support>
    </adf-controller-config...