OC4J application availability control

Can someone please suggest a simple way to make a OC4J application temporarily unavailable for users, so that any request to it returns a "Application not available - try later" page?
Thanks,
Pere

There is no formal way to do this , but can use the following:
1) You can a dummy application with HTML/JSP for this message
2) When you want to make your application unvailable, bind the context root of your apps to the web module of your dummy application.
Hope this helps ..
regards
Debu

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