I just noticed that the first PSU for EM12cR2 is out. It’s under patch number 14840279, and gives us a new version for the EM12cR2 setup: 126.96.36.199.1.
I’ve applied this patch without any trouble. I did so on top of the Dec 2012 performance bundle (patch 14807119). The PSU is a superset of the performance bundle so some patches were rolled back, but everything applied cleanly and my OMS came up fine. It also includes the fix for the EM_JOB_METRICS issue I posted about before so if you aren’t comfortable applying one off patches and have been tolerating the increased redo while waiting for a bundled patch, this PSU is for you.
The only minor issue I had was in the post-patch application step when running post_deploy.sh. The file wasn’t executable so I simply had to chmod +x post_deploy.sh before running ./post_deploy.sh.