Insert unicode symbol "æ Ə "by oracle form 10g

Hi
I have a form which inset some unicode symbol in a string like
abc ≤ æ Ə abc...
into a Nvarchar column.
database caharchterset = AR8MSWIN1256.
database= 10.2.0.4
but instead of that data it insert ( abc ?? ?? ?? abc..) what is wrong in my setting?

Hello,
AR8MSWIN1256 cannot store unicode characters. You should have set the database (and the A.S.) with some AL32UTF8/UTF8 charset.
Francois

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