I am so GLAD I have a DEV database, because I horked it up pretty good. All my senior DBA cohorts are on vacation, working on other projects and in general being super busy, so I try to figure as much stuff as I can on my own before really bothering them, so this helps. I'm working with two DEV databases right now and I think I got them both in an interesting state. The first one is 11g which was GREAT because I figured out how to a duplicate from an active database which worked a little too wonderful, this one happened to also have TDE on a table and it had a wallet and now I am getting a master key not found even though the wallets both had the same password. Sigh. The second DEV database is 10 and again, I can't start it in anything but mount mode after trying to duplicate using RMAN and somehow losing something along the way. I have a question. My main goal is just to really duplicate them from Production using rman and whatever I read, I don't understand what happens to the currently existing datafiles, control files, etc. Are they just deleted or overwritten when the RMAN script runs a duplicate? Am I making my life more complicated by not just blowing everything away and then doing a duplicate? Thanks for any answers.