I am learning Oracle and I am setting up my laptop for that. I must say that it has not been easy even more dealing with Vista compatibility mess. I got Oracle 10g database to work. Now I have finally installed Oracle Developer Suite 10g. Although for some reason I have to change the default Destination when to install it. So I did change it and it install successfully without any error messages. However, I am triing to use Oracle Forms Builder and I got the "ORA-12535: TNS:operation timed out" error questions. I check the Listener already and it works fine. I also open Oracle SQL*Plus and works fine; I even try SQL Developer and the ORCL connection works fine. The weird thing is that if I try to tnsping ORCL I got the timeout error message. Can you guys help me understand? How can two applications seem to be connecting just fine to the ORCL database but one does not? How can I resolve this? Thank you.