Re: Do Oracle fans exist?
There's actually something called https://www.enterprisedb.com/ which provides an Oracle (the flagship dB, not the company :-)) compatibility layer between the application and it's data. I've only played with it, but the idea is that you could build your app on free postgreSQL, limiting yourself to only the features also supported by the big O, and if / when you need to "upgrade" you migrate your data and your good to go. I'm surprised by how little uptake / attention this seems to get. I doubt that many user orgs actually get to the migration phase, which may be the point of it.
As for the old Sun product line, I have found memories of Solaris / SPARC / Java and the rest of their product line. It was great to be one of their customers. Somewhat less so for Oracle I'm afraid.