Originally posted by Axr2
So RMAN expects that one issue a "Level 0" backup immediately after creating a new tablespace? That's not very 'user friendly' for lack of a better term.

I would think everyone using RMAN would've encountered this restore issue or atleast have tested/simulated it before implementation
I didn't say a "Level 0", I said a baseline. When you do an incremental "Level 1" backup, the baseline of the datafile gets backed up in your "Level 1" backup. You then have a place to recover from. I know this works. I've tested it. I've done 6 production recoveries like this. I'm just not sure how RMAN would recover when he doesn't have that initial file to apply changes to.