For me, oracle because I have more experience with it. I deployed oracle instead of mssql for my vcenter dbs. All of our production shit is mysql. It works fine though instrumentation is a joke.
Maybe I'd consider mssql on linux after a 3 to 5 year track record. In the meantime any db needs to run on linux. I can do windows OK (only one on my team that can). More comfortable with linux of course though.
Biting the hand that feeds IT
