This is a rough procedure I used to upgrade the REPOS
database on GRIDCTRL
from 11.1.0.7 to 11.2.0.3.3 prior to upgrading to EM12C R2.
I am following the advice from Oracle Enterprise Manager Cloud Control 12c Release 2 Installation on Oracle Linux 5.8 and 6.3 by Tim Hall, in which he says that the OMR should be at least 11.2.0.2.0.
Originally, this was supposed to be a straight forward upgrade, but I was diverted into installing Grid Infrastructure, and then the patch set for 11.2.0.3.4 came out. So, I put the original procedures into their own pages at the following links: