Best method to load XML data into Oracle

Question

Hi,
I have to load XML data into Oracle tables. I tried using different options and have run into a dead end in each of those. I do not have knowledge of java and hence have restricted myself to PL/SQL solutions. I tried the following options.
1. Using DBMS_XMLSave package : Expects the ROWSET and ROW tags. Connot change format of the incoming XML file (Gives error oracle.xml.sql.OracleXMLSQLException: Start of root element expected).
2. Using the XMLPARSER and XMLDOM PL/SQL APIs : Works fine for small files. Run into memory problems for large files (Gives error java.lang.OutOfMemoryError). Have tried increasing the JAVA_POOL_SIZE but does not work. I am not sure whether I am changing the correct parameter.
I have read that the SAX API does not hog memory resources since it does not build the entire DOM tree structure. But the problem is that it does not have a PL/SQL implementation.
Can anyone PLEASE guide me in the right direction, as to the best way to achieve this through PL/SQL ??? I have not designed the tables so am flexible on using purely relational or object-relational design. Although would prefer to keep a purely relational design. (Had tried used object-relational for 1. and purely relational for 2. above)
The XML files are in the following format, (EXAMINEEs with single DEMOGRAPHIC and multiple TESTs)
<?xml version="1.0"?>
<Root_Element>
<Examinee>
<MACode>A</MACode>
<TestingJID>TN</TestingJID>
<ExamineeID>100001</ExamineeID>
<CreateDate>20020221</CreateDate>
<Demographic>
<InfoDate>20020221</InfoDate>
<FirstTime>1</FirstTime>
<LastName>JANE</LastName>
<FirstName>DOE</FirstName>
<MiddleInitial>C</MiddleInitial>
<LithoNumber>73</LithoNumber>
<StreetAddress>SomeAddress</StreetAddress>
<City>SomeCity</City>
<StateCode>TN</StateCode>
<ZipCode>37000</ZipCode>
<PassStatus>1</PassStatus>
</Demographic>
<Test>
<TestDate>20020221</TestDate>
<TestNbr>1</TestNbr>
<SrlNbr>13773784</SrlNbr>
</Test>
<Test>
<TestDate>20020221</TestDate>
<TestNbr>2</TestNbr>
<SrlNbr>13773784</SrlNbr>
</Test>
</Examinee>
</Root_Element>
Thanks for the help.

Answer 1

Please refer to the XSU(XML SQL Utility) or TransX Utility(for Multi-language Document) if you want to load data in XML format into database.
Both of them require special XML formats, please first refer to the following docs:
http://otn.oracle.com/docs/tech/xml/xdk_java/doc_library/Production9i/doc/java/xsu/xsu_userguide.html
http://otn.oracle.com/docs/tech/xml/xdk_java/doc_library/Production9i/doc/java/transx/readme.html
You can use XSLT to transform your document to the required format.
If you document is large, you can use SAX method to insert data into database. But you need to write the code.
The following sample may be useful:
http://otn.oracle.com/tech/xml/xdk_sample/xdksample_040602i.html