You can enable a database for multi-tenancy from the Database Administration Console.
To enable a database for multi-tenancy:
1. On the management console menu, select Database Administration > Go to Database Administration.
The Database Administration page appears.
2. Filter or search for, and select the database connection.
The database connection home page appears.
3. In the Database Features section, verify the Multi-tenancy status.
(Note that you can click the Sort arrow to display the features in ascending or descending order.)
If the status is a check mark in a green circle and the word Enable does not appear in the Action column, the database is already enabled for multi-tenancy.
4. Click Enable.
The Enable Multi-tenancy page appears.
5. Click Enable Multi-tenancy.
A message appears confirming that the database is now multi-tenant.
6. Click OK.
The database home page appears, and the multi-tenancy status for the database reflects that the database is now enabled.