Specify encoding in PL/SQL XMLDOM

Hi,
I am Using Oracle 8.1.7 and trying to construct XML using xmldom object in a PL/SQL block. The XMl is generated fine but the header is
<?xml version = '1.0' encoding = 'ASCII'?>
Can anyone tell me how to change 'ASCII' to 'utf-8'. Is there any methods available for specifying encoding type??
1. xmldom.setcharset() does not have any impact on the output
2. xmldom.writeToFile(doc,'/tmp/op.xml','UTF-8'); removes the entire header.
Code:
DECLARE
doc xmldom.DOMDocument;
main_node xmldom.DOMNode;
root_node xmldom.DOMNode;
root_elmt xmldom.DOMElement;
BEGIN
doc := xmldom.newDOMDocument;
main_node := xmldom.makeNode(doc);
root_elmt := xmldom.createElement(doc, 'EMP');
root_node := xmldom.appendChild(main_node, xmldom.makeNode(root_elmt));
xmldom.setCharset(doc,'UTF-8');
xmldom.writeToFile(doc,'/tmp/op.xml');
xmldom.freeDocument(doc);
END;
Output:
<?xml version = '1.0' encoding = 'ASCII'?>
<EMP/>
Any help/suggestions would be highly appreciated.
Thanks and Regards,
Prakash

hi,
Here in this code instead of xmldom.setCharset(doc,'UTF-8') use xmldom.setversion(doc,'1.0') which actually sets the character set as 'UTF-8'.Try this it might work.
DECLARE
doc xmldom.DOMDocument;
main_node xmldom.DOMNode;
root_node xmldom.DOMNode;
root_elmt xmldom.DOMElement;
BEGIN
doc := xmldom.newDOMDocument;
main_node := xmldom.makeNode(doc);
root_elmt := xmldom.createElement(doc, 'EMP');
root_node := xmldom.appendChild(main_node, xmldom.makeNode(root_elmt));
xmldom.setversion(doc,'1.0');
xmldom.writeToFile(doc,'/tmp/op.xml');
xmldom.freeDocument(doc);
END;

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