
We're solaris and oracle here
though the db is not seriously key. Word here is that Oracle's Just Better On Solaris. I doubt that they'll kill Oracle Linux; better to let their customers have their choice of platform. However, I'm sure that the rumours about IBM buying Sun precipitated the move... after all, IBM's DB2 competes with Oracle, even whilst MySQL doesn't... and I'm sure that Solaris is a very important platform for them.
Further, if they've done a good job with their software, if they decide to move to Solaris/Sparc in their data centre, it shouldn't be a huge issue for them to do it. Finally... there's LOTS of java in Oracle land... prolly (again) don't want to have a competing DB vendor have control of that part of their toolset.
Of course, they could be stoopid and decide to kill the linux version of Oracle, but I can't think of any rational reason they'd be willing to write off that part of the market.