Talk to Judy at Epic and you get a different opinion. Actually, talk to almost anybody I've ever met in my 10 years in healthcare and you'd get a different opinion.
There is a similar vibe in the bits of blue-chip eCommerce i worked in (online operations for big bricks-and-mortar retailers). If you'd proposed a site where the database was MySQL, you would have got a funny look and the door held open for you.
And remember that you go with Oracle for more than just technology.