How to get utf-8 Chinese Characters from Oracle DB by EJB

We have found that after disabling JIT in weblogic, the Chinese can be displayed correctly, otherwise, it doesn't work.How come this happens?

Thanks for all of your suggestions. It still refuses to work.
I entered the following: ��^�E on the HTML form using the Chinese(PRC)keyboard on my Win2K box.
I checked and verified the correct encoding in the servlet request (GB2312 for chinese characters)
request.getParameter(xxx) yields ???
new String(request.getParameter(xxx).getBytes("GB2312")) yields three boxes (values 20309, 27946 and 23380)
new String(request.getParameter(xxx).getBytes("GB2312"), "UTF-8") yields nothing
Any ideas?

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Edited by: astramare on Feb 11, 2009 12:39 PM with database charsets

Marco,
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How to get utf-8 Chinese Characters from Oracle DB by EJB

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