I'm going to assume you are talking about EBS version 12.x. The default login page for EBS is usually in the format of
http://host.domain:port/OA_HTML/AppsLogin.html. If you have configured the Web tier for an "external HTTP load balancer" , like Big-IP, using the Apps Manager Wizard, then this would change, removing the :port ( assuming you set the Web Entry Point to port 80). If you chose to use SSL offload on the Big-IP, then the protocol would change to
https://host.domain/OA_AppsLogin.html, and you would need to change the monitor from http to https, so the Big-IP would make the SSL monitor connection to the Web pool members.
In any case, this will usually send you back an http 302 redirect, to either the SSO url ( if configured), or to a new Login URL, with your sessionID attached. This will display the main EBS logon screen with the empty userid and password boxes. This is probably good enough for basic monitoring, as this will let you know that a session was able to be created with the Web tier. I am unsure if this first logon page makes a backend database call, an EBS expert would need to tell you for sure. When I have tried this in the lab, if the database is not running, the login page returns an http 500, so I'm pretty sure the database must be up and running for the logon page to be rendered properly.
Hope this helps. Please let us know what you find, and share back with us.
-Chris.
