An internal PostgreSQL database is embedded in the VMware Identity Manager appliance but it is not recommended for use with production deployments. To use an external database with VMware Identity Manager, your database administrator must prepare an empty database and schema before connecting to the database in VMware Identity Manager.
You can connect to the external database connection when you run the VMware Identity Manager Setup wizard. You can also go to the Appliance Settings > VA Configuration > Database Connection Setup page to configure the connection to the external database.
Licensed users can use an external Oracle database or Microsoft SQL Server to set up a high availability database environment.