Hi!
Need help badly!!

I am new to this DBA stuff!!
Wehave a Oracle 8 Database and we need to start testing, so have been asked to create a test database.
How do I create teh DB and how do I knowhow much space I need on the server. Is there a way to identify the production Database size? How wouldI know teh amt.of diskspace?

PlueeeZZ help!!!
Grateful to you.