Precedence Order for a Host in Access Control List Assignments with Port Ranges

The precedence order for a host in an access control list is determined by the use of port ranges.

When an access control list is assigned to a host computer, a domain, or an IP subnet with a port range, it takes precedence over the access control list assigned to the same host, domain, or IP subnet without a port range.

For example, suppose you have TCP connections to any port between port 80 and 99 at server.us.example.com. Oracle Database first selects the access control list assigned to port 80 through 99 at server.us.example.com, ahead of the other access control list assigned to server.us.example.com that is without a port range.