How could I Write data into a field in Oracle whose data type is VARCHAR2

The target data I want to write into Oracle is in http://tw.yahoo.com/info/utos.html.
Now, these data is stored in Mysql database and the field which stores these data uses "Text" as its data type.
I want to derive these data from mysql database and store them into a field of oracle database.
In oracle, I create field whose data type is varchar2(4000) to store these data.
I use JSP to derive data from mysql and insert into oracle through JDBC.
But the result of the page shows me that "javax.servlet.ServletException: Data size bigger than max size for this type: 25623".
Please anyone could help to resolve this problem?
Thank you very much.

My hunch is that the problem is that VARCHAR2(4000), but default, allocates 4000 bytes of storage. Depending on your database character set, a single character may require up to 4 bytes of storage.
If you are on 9i, you can declare the column VARCHAR2(4000 CHAR) to allocate 4000 characters of storage. You can also set NLS_LENGTH_SEMANTICS to CHAR, which will cause Oracle to assume that your declarations are in characters rather than bytes.
Justin
Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC

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