To discover Exadata Infrastructure in Database Management, you must belong to a user group in your tenancy with the required permissions on the following Database Management resource-types:

• dbmgmt-external-exadata: This resource-type allows a user group to initiate the discovery, create the Exadata Infrastructure resource, and add a connection to the storage servers.
• dbmgmt-family: This aggregate resource-type includes the individual Database Management resource-types and allows a user group to discover and monitor Exadata Infrastructure. In addition, you can use this resource-type to grant the permissions required to perform the tasks pertaining to Oracle Databases and External Database Systems.

Here's an example of the individual policy that grants a user group the permissions required to discover Exadata Infrastructure and add a connection to the storage servers:

Allow group DB-MGMT-EXADATA-ADMIN to manage dbmgmt-external-exadata in tenancy

Alternatively, a single policy using the Database Management aggregate resource-type grants the DB-MGMT-EXADATA-ADMIN user group the permission detailed in the preceding paragraph as well as the permissions required to discover and monitor the associated DB system and its components:

Allow group DB-MGMT-EXADATA-ADMIN to manage dbmgmt-family in tenancy

For more information on Database Management resource-types and permissions, see Policy Details for Database Management.