After investigating a support forum issue:
Unsupported database, I discovered that you will get the "unsupported database" error message if you have an empty $db_url entry.
In this particular case it was caused by an "accidental out-commenting" of the database settings section.
My suggestion is that you improve the error message in database.inc to include a notice that the $db_url variable is empty, and that it could be caused by "accidental out-commenting" of the database settings.
Comments
Comment #1
LAsan commentedFeature request, moving to cvs.
Comment #2
dropcube commentedCurrently, database exceptions are catched correclty and a nice mainteneance page is printed out showing error messages.
Comment #3
Anonymous (not verified) commentedAutomatically closed -- issue fixed for two weeks with no activity.