sorting chinese characters

Hi, I have a requirement where I have to sort a field which has euc-jp 
characters in it. When i sort them we find that Japanese Hiragana Characters 
are sorted properly. But Chinese characters are not sorted properly. Can any 
one give some sujestions how to fix it? I have set the LC_ALL=ja_JP in the 
profile.

Thanks in advance for your replies,
Prabahar
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