Multibyte character (Chinese, Korean....) support problem

I used OLE DB(C++) and JDBC(Java) in Oracle 8i server with no problem. I worked very well.
but using ADO.NET(C#), there are the critical problem in selecting and inserting multibyte character (Chinese,Korean.. so on)
Oracle 8i Server charset : US7ASCII
Client NLS_LANG : AMERICAN_AMERICA.US7ASCII
- SELECT multibyte column
SELECT DUMP(multibyte) FROM table;
DUMP(multibyte)
Typ=1 Len=8: 199,209,177,219,195,226,183,194
- value in OracleString
OracleString.Value = ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ (broken character 0xfffd)
I think Oracle Data Provider for .NET can handle only ASCII characters with setting charset US7ASCII.
How I can get multibyte characters through byte array as binary data? (not String)

Since your database character set is not UTF8 or Chinese character set, when inserting Chinese, if the character is not found/mapped in the database character set, a replacement character is used which will be the question marks you see.
Ashish

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Hi Werner,
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Hi,
Check this : http://esupport.csci.unt.edu/oracle/server.901/a90192/ch05.htm
http://www.mcs.csuhayward.edu/support/oracle/doc/8.1.7/server.817/a76955/ch05.htm
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Select shows correct result, no character is wrong or missing!!!!
put this in a UTF8 file without delimiter and enclosure like
10987654321098765432109876543210987654321
the SqlLoader controlfile:
LOAD DATA characterset UTF8
TRUNCATE
INTO TABLE utf8file_to_we8mswin1252
ID CHAR(1)
, TEXT CHAR(40)
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Michael

## put this in a UTF8 file without delimiter and enclosure like
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There is a Metalink Note on it.
http://metalink.oracle.com/metalink/plsql/ml2_documents.showFrameDocument?p_database_id=NOT&p_id=190281.1
Problem Description
You are using OC4J and trying to connect to a database using JDBC OCI and
are getting:
"java.sql.SQLException: Character Set Not Supported !!: DBConversion"
Solution Description
Replace the <OC4J_HOME>\jdbc\lib\classes12dms.jar with
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It seems there is a mismatch of classes12.zip supplied with OC4J 9.0.2
and the Oracle9i client libraries ocijdbc8.dll or ocijdbc8.so.
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[NOTE:108876.1] Creating Connection gives "No ocijdbc8 in java.library.path"
[NOTE:174808.1] JDev9i and OCI Connections
I copied and renamed the jar (classes12.jar) as they stated.
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. For JSP, as mentioned in a previous mail:
<%@ page contentType="text/html;charset=UTF-8" %> for all languages
<%@ page contentType="text/html;charset=GB2312" %> for simplified Chinese
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<%@ page import="oracle.jdbc.*,java.sql.*,java.io.*"%>
<HTML>
<HEAD>
<TITLE>Hello</TITLE></HEAD>
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SQLException Character Set Not Supported

I'm at wit's end.
I have the following versions:
Win2k
JDeveloper 9i R2
Oracle9iAS 9.0.3.0.0
Oracle 9i client 9.0.1.1
Sun J2SDK 1.3.1
Oracle 9i Enterprize Edition 9.0.1.3.0
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Unfortunately, I can't get the external 9iAS server to make this switch. It's (naturally) using its copy of oc4j.jar.
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2) How to force 9i AS to use different libraries before it looks in oc4j.
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I have tried the embedded server in JDeveloper with the same results. Currently, I am using the external one.
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Just ran into this myself yester day.
There is a Metalink Note on it.
http://metalink.oracle.com/metalink/plsql/ml2_documents.showFrameDocument?p_database_id=NOT&p_id=190281.1
Problem Description
You are using OC4J and trying to connect to a database using JDBC OCI and
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Solution Description
Replace the <OC4J_HOME>\jdbc\lib\classes12dms.jar with
<ORACLE_HOME>\jdbc\lib\classes12.jar and rename it with classes12dms.jar.
Explanation
It seems there is a mismatch of classes12.zip supplied with OC4J 9.0.2
and the Oracle9i client libraries ocijdbc8.dll or ocijdbc8.so.
OC4J 9.0.2 does not use jdbc\lib\classes12.jar instead it uses
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[NOTE:108876.1] Creating Connection gives "No ocijdbc8 in java.library.path"
[NOTE:174808.1] JDev9i and OCI Connections
I copied and renamed the jar (classes12.jar) as they stated.
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Multibyte character (Chinese, Korean....) support problem

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