Help! ORA-12703 without using convert

Question

Hi!
First of all. I´m not crazy. I swear.
It´s a very strange error.
I have a form.
This form has a trigger that calls a function inside a package [ form_var := my_pkg.my_func(x); ]
That is been working for years.
I added another function in that package.
This new function is not been used in my forms. Not at all. Not other function inside the package calls the new function.
It´s a isolated new function. No object uses it yet. I will use it latter, but nothing is using it for know. Clear?
But now when I run my form, I get the error ORA-12703 when it calls my_pkg.my_func (the older function).
(again: my_func does not call the new function).
If i comment the new function in package specification (no need to comment in package body), It works again.
If i run outside the form (sqlplus) it works (the older function and the new function: both works).
Nowhere in my code there is convertion or anything that would require a charset translation.
There was no changes in the server. Neither in forms builder and client. Neither in the Windows.
Does anyone know why a non-used function would cause this error?
Forms [32 Bits] Versão 6.0.8.11.3 (Produção)
Oracle Database 10g Release 10.2.0.3.0 - 64bit Production

Answer 1

I think you are right.
I found a workaround for this.
The problem is that forms 6 does not accept functions or procedures that has string parameters with a default value. Example:
procedure test(my_var in char default 'N'); -- Error
procedure test(my_var in number default 0); -- Ok
procedure test(my_var in char); -- Ok
This happened probably becouse I did not applied the patchs for my forms 6.
So... for now I´m avoiding default values in string parameters... I ask to infra team to upgrade forms, but they don´t like to do this.. they love old softwares... (go figure!)
Thanks