I had previously set up 3 databases in SQL Developer using scripts and a setup batch file provided along with the Murach PL/SQL book. Now I am taking a class and want to set up my own (empty) database. I followed instructions found on numerous sites to create a new connection and database, but the database created was auto-populated with a large number of unwanted tables (most with a $ in the name). I can drop/delete most of these tables individually, however that is slow-going and some can't be dropped (an error message appears). I tried running the provided script (edited for the auto-created table names), and it displays as if its working, but then leaves all of the tables intact.
Is there a way to force-drop all existing tables? Or better yet, is there a way to create a new database that has no auto-generated tables so the only ones in it will be the ones I create?
Thanks for any replies