Roles necessary to administer and view the Unified Audit Trail

Oracle 12c provides two new roles for auditing purposes:

AUDIT_ADMIN for audit configuration/administration
AUDIT_VIEWER for viewing and analyzing audit data

The following can role was granted by myself to allow a senior developer to view the audit information generated in a test database:

grant audit_viewer to scott;

https://docs.oracle.com/database/121/DBSEG/release_changes.htm#DBSEG000
https://docs.oracle.com/database/121/DBSEG/auditing.htm#DBSEG617