Have a look at Oracle's Database as a Service in action:
This is a preview lecture of the Udemy Course: Oracle Private Database Cloud.
I created this course to teach how to set up a private database cloud with Oracle technology such as Enterprise Manager.
The full Udemy course is available on https://www.udemy.com/oracle-private-database-cloud/?couponCode=ORANOVTODEC16
Porus Homi Havewala.