If the agent was installed and configured on more than one managed instance, the agent housekeeping application agentapp.war has to be deployed on each and every Managed Server instance. This can be done through the Administration Console. The deployment can have multiple applications protected by the same agent running on the same Managed Server instance. All the applications in the same BEA WebLogic Server 9.0/9.1 server instance use the agent application deployed with this instance.
If more than one instance is being configured and protected by the agent, each Managed Server instance requires that the agent application be deployed. Thereby, no BEA WebLogic Server 9.0/9.1 instance is dependent on any other instance for agent housekeeping operations.
Expand the Deployments tab.
Click the Web Application node.
A new page appears in the right pane.
In the right pane, click Deploy a new Web Application Module.
Click Upload to upload the agentapp.war file from the following directory:
When selecting the target for the Web Application module, you have the option of selecting the entire cluster or individual servers. Deploy the agentapp.war file for every server node on which you will install the agent.