Why my XML is not loading ?? (ORA-19007: Schema - does not match expected )

Question

Hi,
I want to load a XML document in structured XMLType. You can run my code on your database if you have a directory object called LOG_DIR. I am on Oracle 10.1 .
The schema is a simple example which describe a database table(like it will have 1 or more columns and 0 or more indexes). My schema looks like,
<xs:schema elementFormDefault="qualified" attributeFormDefault="unqualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="Tables" type="Table">
<xs:annotation>
<xs:documentation>Table defination</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="table_name" type="xs:string"/>
<xs:complexType name="Table">
<xs:sequence>
<xs:element name="Column" type="Column" minOccurs="1"/>
<xs:element name="Index" type="Index" minOccurs="0"/>
</xs:sequence>
</xs:complexType>
<xs:complexType name="Column">
<xs:annotation>
<xs:documentation>Column of the table</xs:documentation>
</xs:annotation>
<xs:sequence>
<xs:element name="Name" type="xs:string" minOccurs="1"/>
<xs:element name="Type" type="xs:string" minOccurs="1"/>
<xs:element name="Capacity" type="xs:decimal" minOccurs="1"/>
</xs:sequence>
</xs:complexType>
<xs:complexType name="Index">
<xs:annotation>
<xs:documentation>Index on the table</xs:documentation>
</xs:annotation>
<xs:sequence>
<xs:element name="Name" type="xs:string" minOccurs="1"/>
<xs:element name="Type" type="xs:string" minOccurs="0"/>
</xs:sequence>
</xs:complexType>
</xs:schema>
I registered the schema,
BEGIN
DBMS_XMLSCHEMA.registerSchema(
SCHEMAURL => 'tables.xsd',
SCHEMADOC => bfilename('LOG_DIR','tables.xsd'),
CSID => nls_charset_id('AL32UTF8')
END;
This was successfull, also the following create table was ok,
CREATE TABLE TMP_XML_TABLES
file_name VARCHAR2(2000),
load_date DATE,
xml_document XMLType
XMLType COLUMN xml_document
XMLSchema "http://xmlns.oracle.com/xdb/schemas/TDB/tables.xsd"
ELEMENT "Tables";
Now I have a XML document,
<Tables xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.oracle.com/xdb/schemas/TDB/tables.xsd">
<table_name>trades</table_name>
<Column><Name>trade_id</Name><Type>varchar2</Type><Capacity>50</Capacity></Column>
<Column><Name>source</Name><Type>varchar2</Type><Capacity>100</Capacity></Column>
<Column><Name>trade_date</Name><Type>date</Type></Column>
<Column><Name>trader</Name><Type>varchar2</Type><Capacity>200</Capacity></Column>
<Index><Name>trades_pk</Name><Type>btree</Type></Index>
<Index><Name>trades_idx1</Name><Type>bitmap</Type></Index>
</Tables>
When I am trying to load this, I get the error,
SQL> INSERT INTO TMP_XML_TABLES
2 VALUES
3 ('tables1.xml',
4 sysdate,
5 XMLType
6 (
7 bfilename('LOG_DIR','tables1.xml'),
8 nls_charset_id('AL32UTF8')
9 )
10 );
INSERT INTO TMP_XML_TABLES
ERROR at line 1:
ORA-19007: Schema - does not match expected tables.xsd.
Can somebody please explain the cause ???
Thanks and Regards

Answer 1

A quick search of the forum for ORA-19007 should have allowed you to find the answer to your problem. Since you XML Schema does not declare a target namespace you need to use the xsi:noNamespaceSchemaLocation tag rather than the schemaLocation tag..
Also please do not use URLs starting http://xmlns.oracle.com for your schemaLocation hint. If you do no own your own domain I'd suggest example.org...
Finally please make sure that your XML Instance is valid per your XML Schema before posting. You can do this using tools like JDeveloper or XMLSpy. What should have been a 5 min repsonse took me over 20 mins to work through due to the errors in the XML Schema...
Anyway here's a working example for you
SQL>
SQL>
SQL> var schemaURL varchar2(256)
SQL> var schemaPath varchar2(256)
SQL> --
SQL> begin
  2    :schemaURL := 'http://xmlns.examples.org/xdb/schemas/TDB/tables.xsd';
  3    :schemaPath := '/public/testcase.xsd';
  4  end;
  5  /
PL/SQL procedure successfully completed.
SQL> DROP TABLE TMP_XML_TABLES
  2  /
Table dropped.
SQL> call dbms_xmlSchema.deleteSchema(:schemaURL,4)
  2  /
Call completed.
SQL> declare
  2    res boolean;
  3    xmlSchema xmlType := xmlType(
  4  '<xs:schema elementFormDefault="qualified" attributeFormDefault="unqualified" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xdb="
tp://xmlns.oracle.com/xdb">
  5     <xs:element name="Tables" xdb:defaultTable="TABLES_TABLE">
  6     <xs:annotation>
  7                     <xs:documentation>Table defination</xs:documentation>
  8             </xs:annotation>
  9             <xs:complexType>
10                     <xs:complexContent>
11                             <xs:extension base="Table"/>
12                     </xs:complexContent>
13             </xs:complexType>
14     </xs:element>
15     <xs:complexType name="Table">
16             <xs:sequence>
17                     <xs:element name="table_name" type="xs:string"/>
18                     <xs:element name="Column" type="Column" maxOccurs="unbounded"/>
19                     <xs:element name="Index" type="Index" minOccurs="0" maxOccurs="unbounded"/>
20             </xs:sequence>
21     </xs:complexType>
22     <xs:complexType name="Column">
23             <xs:annotation>
24                     <xs:documentation>Column of the table</xs:documentation>
25             </xs:annotation>
26             <xs:sequence>
27                     <xs:element name="Name" type="xs:string"/>
28                     <xs:element name="Type" type="xs:string"/>
29                     <xs:element name="Capacity" type="xs:decimal"/>
30             </xs:sequence>
31     </xs:complexType>
32     <xs:complexType name="Index">
33             <xs:annotation>
34                     <xs:documentation>Index on the table</xs:documentation>
35             </xs:annotation>
36             <xs:sequence>
37                     <xs:element name="Name" type="xs:string"/>
38                     <xs:element name="Type" type="xs:string" minOccurs="0"/>
39             </xs:sequence>
40     </xs:complexType>
41  </xs:schema>
42  ');
43  begin
44    if (dbms_xdb.existsResource(:schemaPath)) then
45      dbms_xdb.deleteResource(:schemaPath);
46    end if;
47    res := dbms_xdb.createResource(:schemaPath,xmlSchema);
48  end;
49  /
PL/SQL procedure successfully completed.
SQL> begin
  2    dbms_xmlschema.registerSchema
  3    (
  4      :schemaURL,
  5      xdbURIType(:schemaPath).getClob(),
  6      TRUE,TRUE,FALSE,TRUE
  7    );
  8  end;
  9  /
PL/SQL procedure successfully completed.
SQL> CREATE TABLE TMP_XML_TABLES
  2  (
  3  file_name VARCHAR2(2000),
  4  load_date DATE,
  5  xml_document XMLType
  6  )
  7  XMLType COLUMN xml_document
  8  XMLSchema "http://xmlns.examples.org/xdb/schemas/TDB/tables.xsd"
  9  ELEMENT "Tables"
10  /
Table created.
SQL> insert into TMP_XML_TABLES values ('testcase1.xml',sysdate,xmltype(
  2  '<Tables xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://xmlns.examples.org/xdb/schemas/T
/tables.xsd">
  3     <table_name>trades</table_name>
  4     <Column>
  5             <Name>trade_id</Name>
  6             <Type>varchar2</Type>
  7             <Capacity>50</Capacity>
  8     </Column>
  9     <Column>
10             <Name>source</Name>
11             <Type>varchar2</Type>
12             <Capacity>100</Capacity>
13     </Column>
14     <Column>
15             <Name>trade_date</Name>
16             <Type>date</Type>
17     </Column>
18     <Column>
19             <Name>trader</Name>
20             <Type>varchar2</Type>
21             <Capacity>200</Capacity>
22     </Column>
23     <Index>
24             <Name>trades_pk</Name>
25             <Type>btree</Type>
26     </Index>
27     <Index>
28             <Name>trades_idx1</Name>
29             <Type>bitmap</Type>
30     </Index>
31  </Tables>'))
32  /
1 row created.
SQL> set long 10000 pages 0 lines 160
SQL> /
1 row created.
SQL> select * from TMP_XML_TABLES
  2  /
testcase1.xml
21-APR-06
<Tables xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://xmlns.examples.org/xdb/schemas/TDB/tab
s.xsd">
  <table_name>trades</table_name>
  <Column>
    <Name>trade_id</Name>
    <Type>varchar2</Type>
    <Capacity>50</Capacity>
  </Column>
  <Column>
    <Name>source</Name>
    <Type>varchar2</Type>
    <Capacity>100</Capacity>
  </Column>
  <Column>
    <Name>trade_date</Name>
    <Type>date</Type>
  </Column>
  <Column>
    <Name>trader</Name>
    <Type>varchar2</Type>
    <Capacity>200</Capacity>
  </Column>
  <Index>
    <Name>trades_pk</Name>
    <Type>btree</Type>
  </Index>
  <Index>
    <Name>trades_idx1</Name>
    <Type>bitmap</Type>
  </Index>
</Tables>
testcase1.xml
21-APR-06
<Tables xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://xmlns.examples.org/xdb/schemas/TDB/tab
s.xsd">
  <table_name>trades</table_name>
  <Column>
    <Name>trade_id</Name>
    <Type>varchar2</Type>
    <Capacity>50</Capacity>
  </Column>
  <Column>
    <Name>source</Name>
    <Type>varchar2</Type>
    <Capacity>100</Capacity>
  </Column>
  <Column>
    <Name>trade_date</Name>
    <Type>date</Type>
  </Column>
  <Column>
    <Name>trader</Name>
    <Type>varchar2</Type>
    <Capacity>200</Capacity>
  </Column>
  <Index>
    <Name>trades_pk</Name>
    <Type>btree</Type>
  </Index>
  <Index>
    <Name>trades_idx1</Name>
    <Type>bitmap</Type>
  </Index>
</Tables>Since you are tracking metadata about the documents (name, date loaded) you might want to consider using the XDB repository to load the documents. The folllowing shows how you can do this from SQL and then create a view which contains the metadata and document content. The advantage of this approach is you can now load the documents using FTP or WebDAV.
SQL> declare
  2    res boolean;
  3    document xmltype := xmltype(
  4  '<Tables xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://xmlns.examples.org/xdb/schemas/T
/tables.xsd">
  5     <table_name>trades</table_name>
  6     <Column>
  7             <Name>trade_id</Name>
  8             <Type>varchar2</Type>
  9             <Capacity>50</Capacity>
10     </Column>
11     <Column>
12             <Name>source</Name>
13             <Type>varchar2</Type>
14             <Capacity>100</Capacity>
15     </Column>
16     <Column>
17             <Name>trade_date</Name>
18             <Type>date</Type>
19     </Column>
20     <Column>
21             <Name>trader</Name>
22             <Type>varchar2</Type>
23             <Capacity>200</Capacity>
24     </Column>
25     <Index>
26             <Name>trades_pk</Name>
27             <Type>btree</Type>
28     </Index>
29     <Index>
30             <Name>trades_idx1</Name>
31             <Type>bitmap</Type>
32     </Index>
33  </Tables>');
34  begin
35    res := dbms_xdb.createResource('/public/testcase.xml',document);
36  end;
37  /
PL/SQL procedure successfully completed.
SQL> create or replace view TMP_XML_TABLES_VIEW as
  2  select extractValue(res,'/Resource/DisplayName') FILENAME,
  3         extractValue(res,'/Resource/CreationDate') LOAD_DATE,
  4         object_value XML_DOCUMENT
  5    from RESOURCE_VIEW, TABLES_TABLE t
  6   where extractValue(res,'/Resource/XMLRef')= ref(t)
  7  /
View created.
SQL> select * from TABLES_TABLE
  2  /
<Tables xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://xmlns.examples.org/xdb/schemas/TDB/tab
s.xsd">
  <table_name>trades</table_name>
  <Column>
    <Name>trade_id</Name>
    <Type>varchar2</Type>
    <Capacity>50</Capacity>
  </Column>
  <Column>
    <Name>source</Name>
    <Type>varchar2</Type>
    <Capacity>100</Capacity>
  </Column>
  <Column>
    <Name>trade_date</Name>
    <Type>date</Type>
  </Column>
  <Column>
    <Name>trader</Name>
    <Type>varchar2</Type>
    <Capacity>200</Capacity>
  </Column>
  <Index>
    <Name>trades_pk</Name>
    <Type>btree</Type>
  </Index>
  <Index>
    <Name>trades_idx1</Name>
    <Type>bitmap</Type>
  </Index>
</Tables>
SQL> select * from TMP_XML_TABLES_VIEW
  2  /
testcase.xml
21-APR-06 02.21.37.031000 PM
<Tables xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://xmlns.examples.org/xdb/schemas/TDB/tab
s.xsd">
  <table_name>trades</table_name>
  <Column>
    <Name>trade_id</Name>
    <Type>varchar2</Type>
    <Capacity>50</Capacity>
  </Column>
  <Column>
    <Name>source</Name>
    <Type>varchar2</Type>
    <Capacity>100</Capacity>
  </Column>
  <Column>
    <Name>trade_date</Name>
    <Type>date</Type>
  </Column>
  <Column>
    <Name>trader</Name>
    <Type>varchar2</Type>
    <Capacity>200</Capacity>
  </Column>
  <Index>
    <Name>trades_pk</Name>
    <Type>btree</Type>
  </Index>
  <Index>
    <Name>trades_idx1</Name>
    <Type>bitmap</Type>
  </Index>
</Tables>
SQL>
SQL>
SQL>