ADF Security 11g login page failure is fairly common problem - I'm getting questions about this time to time and facing it myself from project to project. One of the most common problems - during first page access, ADF Security redirects to login page and it starts infinite redirect loop - login page is not loaded and application is blocked. If you are getting this error, make sure Anonymous
application role is granted to login page definition, this means ADF will be able to load it for unauthenticated users. Read more about it here - Things You Must Know About ADF Faces Login Page
. But there is something more to this, if you are still getting infinite loop when trying to login into ADF application - I will describe today what else you should check.