Had a few issues but we've got a 9.2 system up and running in a Win 2012/SQL Server 2014 environment. Even got the fat client to work on Windows 10. Gave up on OneView etc as with the UDO security changes and missing components it wasn't worth the effort. Once they upgrade certification to OBIEE 12c we'll look to get those components running.
We have detailed documentation on what is required but sharing it would sort of defeat the purpose of developing it in the first place if you know what I mean.
As with all new releases there's a couple of interesting bugs. I'd suggest 188.8.131.52 would probably be the minimum tools release for a production environment but it may take a couple more.