OMN supports Oracle 19 LTS (19c) [OR-783]
With 5.12 OMN supports usage of Oracle 19 LTS database (cp. OR-783- OMN License Server 2.0).
To support Oracle 19 there are some migration tasks necessary → Oracle 19 support requires creation of OMN-User before initialization [OR-783].
Oracle 12 is not supported anymore → Since OMN 5.12 Oracle DB versions smaller 19 are not supported anymore.