The first thing we need is a user we know exists on both servers. While we can link a local user with any remote user, this is easiest when they have the same name. This prevents confusion or connection problems in the future. If we are linking to a remote server we don't administer, this may not be possible. For now, however, we have control over both systems, so we can create the bench_user safely with a simple password for testing purposes.
Next, we create the user mapping itself. As with the server, we need to fill in three sections: a local user name, the server to use, and options for the mapping. We just created bench_user, so this will be our local user to associate with the mapping. Next, we specify the primary_db ...
