Error in updating Chinese and Russian characters

Question

Hello Gurus,
I am Working in oracle 10g R2/Solaris.
I am try to update one of my customer table which has Chinese and Russian(basically non-english letters) etc.,
I have prepare the update statement MS-Excel. it looks correct
UPDATE WEBSCHEMA.DPS_USER SET
FIRST_NAME=
'李'
LAST_NAME=
'文斌'
WHERE LOGIN =
'[email protected]';
But, When paste in toad/sql developer/sql*plus, it gave some unique boxes/questionmark in place of Chinese letters. Even, I tried pasting notepad and again copy paste from notepad also. I found same error
UPDATE WEBSCHEMA.DPS_USER SET      FIRST_NAME=    ' some box here'       ,    LAST_NAME=  ' some box here'        WHERE LOGIN =    '[email protected]';
My CHARACTERSET parameter values:-
SELECT * FROM NLS_DATABASE_PARAMETERS WHERE PARAMETER LIKE '%CHARACTERSET';
PARAMETER                      VALUE                                  
NLS_NCHAR_CHARACTERSET         AL16UTF16                              
NLS_CHARACTERSET               AL32UTF8                               
2 rows selected.
How to fix this issue?
Thanks
Raj

Answer 1

sorry for double posting because i didnt got reply from first one so i thought that nobody have looked on that topic that's why i done this.