Read/write XML via OO4O

Question

We have some ASP code (Active Server Pages) that uses OO4O to select/insert data in an Oracle 8i rel. 2 database (The OO4O objects are from the same release 8.1.6). Now we would like to enhance it to read and store some XML documents directly (the XML documents are about 10 KB and have nested master/detail like structure).
Our first idea was to write a stored procedure with a string argument to save the XML document, and to write a stored function also returning a string to retrieve the same data. But it appears that there is a 4KB limitation here (we thought it was a 32 KB limitation, but have only been able to get 4 KB?).
Then we tried to use the RAW parameter type (although the documentation recommends not to), but this apparently requires the data top be transformed to binary format (the XML is in ISO8859-1 format).
Have you any suggestions on how to overcome these limitations?
Or are we simply going in the wrong direction (Is there a better way to use XML via OO4O than with stored procedures)?
Regards
Tom Bjerre.
NB: The stored procedures written in Java look like:
public static String get_xml(String key) throws SQLException{...}
public static void set_xml(String key, String xmlStr) throws SQLException{...}
with call specs of:
CREATE OR REPLACE PACKAGE TEST AUTHID DEFINER AS
FUNCTION GET_XML ("key" IN VARCHAR2)
RETURN VARCHAR2
AS LANGUAGE JAVA
NAME 'Test.UtilXML.get_xml(java.lang.String) return java.lang.String';
PROCEDURE SET_XML ("key" IN VARCHAR2, "xmlStr" IN VARCHAR2)
AS LANGUAGE JAVA
NAME 'Test.UtilXML.set_xml(java.lang.String, java.lang.String)';
END TEST;
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Answer 1

CHAR is limited to 2k.
VARCHAR2 is limited to 4k.
You should be using CLOB if you're
saving XML strings.