Hi,
It's been a week trying to fix the arabic character on my sql developer. There are some characters became question mark(?) but when using the application, end user able to see correctly all the characters. Is there any options for sql developer to set nls_lang? I've tried to change the font and encoding in the preferences but still the same. Any suggestion?

We're using NLS_CHARACTERSET AR8ISO8859P6 in our database.
Thank you..