With the arrival of Oracle Linux 6 comes the inevitable installation articles.
The Oracle installation on Oracle Linux 6 is certainly smoother than the recent Fedora installations have been. Even Enterprise Manager works fine with no meddling.
The official 11gR2 installation guide has not been updated to include Oracle Linux 6 and I can’t see any notes on MOS about it, so I’ve essentially followed the installation for Oracle Linux 5 and adjusted where necessary. I’m guessing when the official notes are released they are going to be pretty close to this. I can’t see any certifications against Oracle Linux 6, so I guess I would avoid it for production Oracle installations at the moment.