Oracle File Extensions

Does anybody here know the file extensions for an oracle database and it's log file?

IE:
Access = *.mdb
SQL Server = *.mdf | *.ldf
Oracle = *.??? | *.???

You're my last hope... I've asked this on three programming forums, googled it for about 15 minutes, asked everybody in my office, and even called two ex-employees. Nobody can answer this amazingly simple question. Truly 4chan has the answer right?

>>9
Being a programmer sucks? Then what are you doing on the programming forum?

10^6 file extensions for one thing? All I need is the extension to the main database file and it's log file so my user can say, "This is the database I want to use today" and select it in the standard Microsoft Open Dialog control.

I honestly don't believe that one type of file can have 1,000,000 diffrent extensions.