Hebrew fonts problem with Oracle on Windows machines
Can't view Hebrew data stored in your Oracle database using TOAD / PL/SQL developer ?
That, also, is a well known problem with a very usually-it-works solution for Windows users:
In order to be able to view Hebrew fonts properly from Oracle you need to set the NLS_LANG registry key.
The key can be found here:
HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE\HOMEID\NLS_LANG where ID is the unique number identifying the Oracle home.
The right value of the key for Hebrew fonts is: HEBREW_ISRAEL.IW8MSWIN1255
The full explanation + additional information can be found here.