Download and Install a Weblogic Local Server (for the Runtime). For a remote server, the version must be the same version than your remote weblogic server.
Steps
Runtime Configuration
Menu > Windows > Preference
Select the Server/Runtime Environment Node
Define a new Server Runtime Environment
Define a Weblogic Runtime
Define a new Server
Menu > Windows > Show View > Server
Right click in the server view and selection New Server : Add a new Server
Choose the type
Define the Weblogic Server (Local or Remote)
Add a project/resource if necessary
Finish
After validation, you can see the new weblogic server in the Server view:
where you can navigate through:
the published modules in the following server: Administration Server and the Managed Server (bi_server1 is the default managed server name for an OBIEE 11g installation).