My article series looking at the private Database as a Service (DBaaS) Cloud – how to set up such a cloud, and how to use it effectively using Oracle Enterprise Manager.
https://www.toadworld.com/platforms/oracle/b/weblog/archive/2017/06/07/database-as-a-service-using-enterprise-manager-part-i
https://www.toadworld.com/platforms/oracle/b/weblog/archive/2017/06/07/database-as-a-service-using-enterprise-manager-part-i