in reply to What are DBD::Oracle's dependencies (on Linux)?
Nothing else. From the DBD::Oracle docs,
$dbh = DBI->connect("dbi:Oracle:host=myhost.com;sid=ORCL", $user, $pas +swd);
Note "myhost.com". The database does not have to be on the local machine. DBD::Oracle will contact the database over a network or over the internet.