The first step in building a DBaaS environment is to provision the database software and make sure the provisioned database instances are available on all hosts. There are the following two methods of provisioning databases in Oracle Enterprise Manager:
Using provisioning profiles: You can create provisioning profiles and use the database image from these profiles to provision database instances. This process makes sure that you have all the necessary templates and plugins as part of the deployment. You can create a provisioning profile by navigating to Enterprise | Provisioning and Patching | Database Provisioning.
To deploy database plugins to the agents in the current PaaS Infrastructure Zone, navigate to Setup | Extensibility | Plugins.
Run Clusterware/ASM installer to set up the cluster and ASM.
Run the database...