Oracle Solution for Error ora-12324

ORA-12324: cannot use the ROM: link type on a private database link

What triggered the Error:

You can only specify the ROM: link type on a public, not a private, database link.

What should we do to fix it:

Determine if there is an existing public database link to the secondary database. If not, and if you wish to establish public access to the secondary database, create a public database link to the secondary database using the CREATE DATABASE LINK command.