I agree with Carp.
The first thing to know is what will I need to do if something goes wrong.
After that I would want to sit down with some fine reading, like a data dictionary. What tablespaces do I have, what tables are in those tablespaces, what is the use (i.e., number of records a day, etc) of those tables. What applications effect what tables. With that information, can you start looking into the sizing and controlling of those tablespaces.
Another thing to check into is the security of the database. Passwords, users with what roles, etc. I have seen too many times where Billy Bob User has been so active in the database, and the previous DBA was busy/lazy, that he was given DBA privs.
Hopefully, all that information will be in one place, a contingency notebook or something.
Good Luck.
Terry M. Hoey
th3856@txmail.sbc.com
Ever notice that by the time that you realize that you ran a truncate script on the wrong instance, it is too late to stop it?