I don't know how many credits you need to get an associates degree, but it sounds like you're close. Finish that up. Having a little alphabet soup after your name seems to impress folks especially if you're making a career change.

So far as you saying your not an "ideal" candidate, I say rubbish! If more people in IT had the kind of experience you have, they be able to think out of the box more often.

If you can handle the commitment, do get certified in SQL Server 2012. Unlike a brand spankin' newbie, you already know what a database is. Just remember that Oracle and DB2 are quite different in syntax in some areas (both basic and advanced). I normally don't recommend certs for personal reasons but, again, hiring managers do like to see the alphabet soup.

You'll need to backup the letters in your name with experience. If you can "get in" to the DBA group at your current company, do some volunteer work for charities.

Now that all of that has been said, you already have Oracle experience. Why not simply return to that path? You could even legitimately claim prior experience on your resume with that.