Delete the Administration Server

You cannot delete a server that is currently active; therefore, you cannot use the Administration Console to delete the current Administration Server. (The Administration Console runs on the Administration Server.) To delete the server instance that you are using as an Administration Server:

If you have not already done so, in the Change Center of the Administration Console, click Lock & Edit (see Use the Change Center).
Shut down all server instances in the domain, including the Administration Server.
Start another server in the domain as the Administration Server by entering the following command:java -Dweblogic.Name=serverNameweblogic.Server
In the alternative, you can use one of the other methods described in Alternate Ways to Start Administration Servers.
Start the Administration Console for the newly-started server.
Use the Administration Console to delete the server instance that you were previously using as the Administration Server. See Delete Managed Servers