my $dbh = DBI->connect('dbi:Oracle:host=localhost;sid=ORCL;port=1521', 'scott', 'tiger', { RaiseError => 1, AutoCommit => 0 }); my $dbh = DBI->connect('dbi:Oracle:host=localhost;service=my.service.name.com;port=1521','scott', 'tiger', { RaiseError => 1, AutoCommit => 0 });