ORA-01017 when open a new form with OPEN_FORM

Hi all.

The error occour when I try to open a new form with the open_form command. for example

open_Form(lower('secondform'),ACTIVATE,SESSION);

this command open the second form but try to create a new connection and throw the ORA-01017 error.

this situation not occurs always. I discard a password casesensitive problem because sometime works and sometime not work

I use the oracle forms 12.2.1.2.0

thanks for advance