Hi,
As soon Oracle 12c gets released by SAP, Oracle database administrators may want to upgrade their systems to 12c for several reasons.
Here, I just want to give you a very short summary and list the steps needed to perform this activity without any issues. This procedure was tested and executed successfully. I will post the full document as soon all information gets officially released.
An upgrade from 11g to 12c differs from other upgrades in point 1 only!
Regards,
János