The certification for Oracle Database 12.1.0.2 as Repository Database underneath of Oracle Enterprise Manager Cloud Control 12.1.0.4 (OMS) had been revoked for a while. One reason may have been the potential removal of the SYSMAN user during a DBUA upgrade 😉 But this is just a rumor. I don’t know the exact reasons. After checking with the certification matrix earlier today I realized: Oracle Database 12.1.0.2 is certified as a repository database for Cloud Control resp. OMS. But … with a few important restrictions (see MOS Note:1987905.1 – 12c Database has been Certified as a 12cR4 Repository with Certain Patchset…