New answer to an old post, but here's an example of loading to a table using (brand new module as of this post) DBIx::BulkUtil. This library can do the traditional "load from a file", or you can create a function to generate and return the rows of data (or pass in your own file handle for sqlldr to read) to be fed to sqlldr through stdin:

my ($dbh, $dbu) = DBIx::BulkUtil->ora_connect(
  Database => $database,
  User => $user,
  Password => $pw,
);

# Assuming two column table
# Default is "|" column delimited, "\n" row delimited
my @rows = qw(
abc|def
ghi|jkl
);

sub insert_row {
  my $data = shift @rows or return;
  return $data . "\n";
}

$dbu->bcp_in($table, '-', {
  Stdin => \&insert_row,
});

$dbh->disconnect();
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