Example 5-11 in Steve Muench's Oracle-XML book

Question

Hi,
Anyone who studied the book Building Oracle XML Applications by Steve Muench (O'Reilly), could clarify this query. When I tried to execute Example 5-11:Test,Extract and Retrieve an XPath Expression Value (page 132) I get the following error:
PLS-00307: too many declarations of 'SELECTNODES' match this call (complete source code given at the end of this message).
Could you please explain why this error is occurring.
Best wishes,
Balu
Code
SQL> SET SERVEROUTPUT ON
SQL> DECLARE
2 doc xmldom.DOMDocument;
3 approvers xmldom.DOMNodeList;
4 PROCEDURE p(msg VARCHAR2, nl BOOLEAN := TRUE) IS BEGIN
5 dbms_output.put_line(msg);IF nl THEN dbms_output.put(CHR(10)); END IF;
6 END;
7 FUNCTION yn(b BOOLEAN ) RETURN VARCHAR2 IS
8 BEGIN IF b THEN RETURN 'Yes'; ELSE RETURN 'No'; END IF; END;
9 BEGIN
10 doc := xml.parse(BFileName('XMLFILES','claim77804.xml'));
11
12 p('What is the value of the Policy number for this claim?');
13 p( xpath.valueOf(doc,'/Claim/Policy') );
14
15 p('Does this claim have any settlement payments over $500 approved by JCOX?');
16 p(yn(xpath.test(doc,'//Settlements/Payment[. > 500 and @Approver="JCOX"]')));
17
18 -- Demonstrate Saving and Re-getting the XML document
19 xmldoc.save('claim77804',doc);
20 doc := xmldoc.get('claim77804');
21
22 p('What is XML document fragment contained by the <DamageReport> element?');
23 p(xpath.extract(doc,'/Claim/DamageReport'));
24
25 p('Who approved settlement payments for this claim?');
26 approvers := xpath.selectNodes(doc,'/Claim/Settlements/Payment');
27 FOR j IN 1..xmldom.getLength(approvers) LOOP
28 p(xpath.valueOf(xmldom.item(approvers,j-1),'@Approver'),nl=>FALSE);
29 END LOOP;
30 xml.freeDocument(doc);
31 END;
32
33 /
DECLARE
ERROR at line 1:
ORA-06550: line 26, column 16:
PLS-00307: too many declarations of 'SELECTNODES' match this call
ORA-06550: line 26, column 3:
PL/SQL: Statement ignored

Answer 1

I tried the wayback machine, but unfortunately, it doesn't cache the SWF files either :( I do have a copy of some (ok one) of Steve's old videos (the one that shows how to do a dropdown list in an editable table, back before it was easy to do), but unfortunately, none of the search ones.
John