The Oracle Fusion HCM Cloud adapter in Axonius requires the hostname or IP address of the Oracle Fusion HCM Cloud server, along with valid user credentials and SSL verification. The adapter uses the Oracle Fusion Cloud HCM REST API and requires TCP ports 80 and 443. The user account must have specific security privileges and roles to fetch assets, including REST service access for workers, connections duty, and REST service access for worker as worker, manager, and HR.