Full SSL configuration uses two server aliases, one for external communication between Oracle HTTP Server and browsers, and the other for routing internal communication among EPM System servers. Oracle recommends that both of these certificates be tied to server aliases, for example, epm.myCompany.com and empinternal.myCompany.com, to prevent the exposure of server names.
You add server aliases in the hosts file on the machine. Ensure that the server aliases point to the IP address of the machine that hosts Oracle HTTP Server. Clients must resolve these aliases through DNS.