Greetings, chuleto1!

When executing an existing stored procedure via DBI, I have often used a structure like the following:

sub call_assign_value_func {
  my $some_num = shift;
  my $func_value = -1;
  my $pkgh = $dbh->prepare("BEGIN :result :=
    PKG_SIMULATOR.F_ASSIGN_VALUE(:some_num); END;");
  $pkgh->bind_param(":some_num", $some_num);
  $pkgh->bind_param_inout(":result", \$func_value, 15);
  $pkgh->execute();
  return $func_value;
}
[download]

I am basically creating an anonymous PL/SQL block to execute the desired stored procedure, (or function in this case.) Using the $pkgh->bind_param and $pkgh->bind_param_inout calls allows for much greater flexibility when working with some of the stored procedures I have.

Hope this helps!

-Daruma