SQL*Loader problem - not efficient, parsing error for big xml files

Question

Hi Experts,
First of all, I would like to store xml files in object relation way. Therefore I created a schema and a table for it (see above).
I wants to propagate it (by using generated xml files), hence I created a control file for sql loader (see above).
I have two problems for it.
1, It takes a lot of time. It means I can upload a ~80MB file in 2 hours and a half.
2, At bigger files, I got the following error messages (OCI-31011: XML parsing failed OCI-19202: Error occurred in XML processing LPX-00243: element attribute value must be enclosed in quotes). It is quite interesting because my xml file is generated and I could generated and uploaded the first and second half of the file.
Can you help me to solve these problems?
Thanks,
Adam
Control file
UNRECOVERABLE
LOAD DATA
CHARACTERSET UTF8
INFILE *
APPEND
INTO TABLE coll_xml_objrel
XMLTYPE(xml)
FIELDS
ident constant 2
,file_name filler char(100)
,xml LOBFILE (file_name) TERMINATED BY EOF
BEGINDATA
generated1000x10000.xml
Sql Loader command
sqlldr.exe username/password@//localhost:1521/SID control='loader.ctl' log='loadr.log' direct=true
Schema
<?xml version="1.0" encoding="UTF-8"?>
<schema targetNamespace="http://www.something.com/shema/simple_searches" elementFormDefault="qualified" xmlns="http://www.w3.org/2001/XMLSchema" xmlns:tns="http://www.something.com/shema/simple_searches">
    <element name="searches" type="tns:searches_type"></element>
    <element name="search" type="tns:search_type"></element>
    <element name="results" type="tns:results_type"></element>
    <element name="result" type="tns:result_type"></element>
    <complexType name="searches_type">
        <sequence>
            <element ref="tns:search" maxOccurs="unbounded"></element>
        </sequence>
    </complexType>
    <complexType name="search_type">
        <sequence>
            <element ref="tns:results"></element>
        </sequence>
        <attribute ref="tns:id" use="required"></attribute>
        <attribute ref="tns:type" use="required"></attribute>
    </complexType>
    <complexType name="results_type">
        <sequence maxOccurs="unbounded">
            <element ref="tns:result"></element>
        </sequence>
    </complexType>
    <complexType name="result_type">
        <attribute ref="tns:id" use="required"></attribute>
    </complexType>
    <simpleType name="type_type">
        <restriction base="string">
            <enumeration value="value1"></enumeration>
            <enumeration value="value2"></enumeration>
        </restriction>
    </simpleType>
    <attribute name="type" type="tns:type_type"></attribute>
    <attribute name="id" type="string"></attribute>
</schema>
Create table
create table coll_xml_objrel
ident Number(20) primary key,
xml xmltype)
Xmltype column xml
store as object relational
xmlschema "http://www.something.com/schema/simple_searches.xsd"
Element "searches";

Answer 1

Hi Odie_63,
Thanks for your answer.
I will post this question in the XML DB forum too (edit: I realized that you have done it. Thanks for it).
1, Version: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
2, see above
3, I have registered my schema with using dbms_xmlschema.registerSchema function.
Cheers,
Adam
XML generator:
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import javax.xml.stream.XMLOutputFactory;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamWriter;
public class mainGenerator {
    public static void main(String[] args) throws FileNotFoundException, XMLStreamException {
        // TODO Auto-generated method stub
        final long numberOfSearches = 500;
        final long numberOfResults = 10000;
        XMLOutputFactory xof = XMLOutputFactory.newFactory();
        XMLStreamWriter writer = xof.createXMLStreamWriter(new FileOutputStream("C:\\Working\\generated500x10000.xml"));
        writer.writeStartDocument();
        writer.writeStartElement("tns","searches", "http://www.something.com/schema/simple_searches");
        writer.writeNamespace("tns", "http://www.something.com/schema/simple_searches");
        for (long i = 0; i < numberOfSearches; i++){
            Long help = new Long(i);
            writer.writeStartElement("tns","search", "http://www.something.com/schema/simple_searches);
            writer.writeAttribute("tns", "http://www.something.com/schema/simple_searches", "type", "value1");
            writer.writeAttribute("tns", "http://www.something.com/schema/simple_searches", "id", help.toString());
            writer.writeStartElement("tns","results", "http://www.something.com/schema/simple_searches");
            for (long j = 0; j < numberOfResults; j++){
                writer.writeStartElement("tns","result", "http://www.something.com/schema/simple_searches");
                Long helper = new Long(i*numberOfResults+j);
                writer.writeAttribute("tns", "http://www.something.com/schema/simple_searches", "id", helper.toString());
                writer.writeEndElement();
            writer.writeEndElement();
            writer.writeEndElement();
        writer.writeEndElement();
        writer.writeEndDocument();
        writer.close();
registerSchema:
begin
dbms_xmlschema.registerSchema(
'http://www.something.com/schema/simple_searches',
'<?xml version="1.0" encoding="UTF-8"?>
<schema targetNamespace="http://www.something.com/schema/simple_searches" elementFormDefault="qualified" xmlns="http://www.w3.org/2001/XMLSchema" xmlns:tns="http://www.something.com/schema/simple_searches">
    <element name="searches" type="tns:searches_type"></element>
    <element name="search" type="tns:search_type"></element>
    <element name="results" type="tns:results_type"></element>
    <element name="result" type="tns:result_type"></element>
    <complexType name="searches_type">
        <sequence>
            <element ref="tns:search" maxOccurs="unbounded"></element>
        </sequence>
    </complexType>
    <complexType name="search_type">
        <sequence>
            <element ref="tns:results"></element>
        </sequence>
        <attribute ref="tns:id" use="required"></attribute>
        <attribute ref="tns:type" use="required"></attribute>
    </complexType>
    <complexType name="results_type">
        <sequence maxOccurs="unbounded">
            <element ref="tns:result"></element>
        </sequence>
    </complexType>
    <complexType name="result_type">
        <attribute ref="tns:id" use="required"></attribute>
    </complexType>
    <simpleType name="type_type">
        <restriction base="string">
            <enumeration value="value1"></enumeration>
            <enumeration value="value2"></enumeration>
        </restriction>
    </simpleType>
    <attribute name="type" type="tns:type_type"></attribute>
    <attribute name="id" type="string"></attribute>
</schema>',
TRUE, TRUE, FALSE, FALSE);
end