An example about how to load a XML file

Question

Hi,
I've been working on Oracle for many years but fot the first time I was asked to load a XML file into a table.
As an example, I've found this on the web, but it doesn't work.
Can someone tell me why? I hoped this example could help me.
the file acct.xml is this:
<?xml version="1.0"?>
<ACCOUNT_HEADER_ACK>
<HEADER>
<STATUS_CODE>100</STATUS_CODE>
<STATUS_REMARKS>check</STATUS_REMARKS>
</HEADER>
<DETAILS>
<DETAIL>
<SEGMENT_NUMBER>2</SEGMENT_NUMBER>
<REMARKS>rp polytechnic</REMARKS>
</DETAIL>
<DETAIL>
<SEGMENT_NUMBER>3</SEGMENT_NUMBER>
<REMARKS>rp polytechnic administration</REMARKS>
</DETAIL>
<DETAIL>
<SEGMENT_NUMBER>4</SEGMENT_NUMBER>
<REMARKS>rp polytechnic finance</REMARKS>
</DETAIL>
<DETAIL>
<SEGMENT_NUMBER>5</SEGMENT_NUMBER>
<REMARKS>rp polytechnic logistics</REMARKS>
</DETAIL>
</DETAILS>
<HEADER>
<STATUS_CODE>500</STATUS_CODE>
<STATUS_REMARKS>process exception</STATUS_REMARKS>
</HEADER>
<DETAILS>
<DETAIL>
<SEGMENT_NUMBER>20</SEGMENT_NUMBER>
<REMARKS> base polytechnic</REMARKS>
</DETAIL>
<DETAIL>
<SEGMENT_NUMBER>30</SEGMENT_NUMBER>
</DETAIL>
<DETAIL>
<SEGMENT_NUMBER>40</SEGMENT_NUMBER>
<REMARKS> base polytechnic finance</REMARKS>
</DETAIL>
<DETAIL>
<SEGMENT_NUMBER>50</SEGMENT_NUMBER>
<REMARKS> base polytechnic logistics</REMARKS>
</DETAIL>
</DETAILS>
</ACCOUNT_HEADER_ACK>
For the two tags HEADER and DETAILS I have the table:
create table xxrp_acct_details(
status_code number,
status_remarks varchar2(100),
segment_number number,
remarks varchar2(100)
before I've created a
create directory test_dir as 'c:\esterno'; -- where I have my acct.xml
and after, can you give me a script for loading data by using XMLTABLE?
I've tried this but it doesn't work:
DECLARE
acct_doc xmltype := xmltype( bfilename('TEST_DIR','acct.xml'), nls_charset_id('AL32UTF8') );
BEGIN
insert into xxrp_acct_details (status_code, status_remarks, segment_number, remarks)
select x1.status_code,
        x1.status_remarks,
        x2.segment_number,
        x2.remarks
from xmltable(
  '/ACCOUNT_HEADER_ACK/HEADER'
  passing acct_doc
  columns header_no      for ordinality,
          status_code    number        path 'STATUS_CODE',
          status_remarks varchar2(100) path 'STATUS_REMARKS'
) x1,
xmltable(
  '$d/ACCOUNT_HEADER_ACK/DETAILS[$hn]/DETAIL'
  passing acct_doc as "d",
          x1.header_no as "hn"
  columns segment_number number        path 'SEGMENT_NUMBER',
          remarks        varchar2(100) path 'REMARKS'
) x2
END;
This should allow me to get something like this:
select * from xxrp_acct_details;
Statuscode status remarks segement remarks
100 check 2 rp polytechnic
100 check 3 rp polytechnic administration
100 check 4 rp polytechnic finance
100 check 5 rp polytechnic logistics
500 process exception 20 base polytechnic
500 process exception 30
500 process exception 40 base polytechnic finance
500 process exception 50 base polytechnic logistics
but I get:
Error report:
ORA-06550: line 19, column 11:
PL/SQL: ORA-00932: inconsistent datatypes: expected - got NUMBER
ORA-06550: line 4, column 2:
PL/SQL: SQL Statement ignored
06550. 00000 -  "line %s, column %s:\n%s"
*Cause:    Usually a PL/SQL compilation error.
and if I try to change the script without using the column HEADER_NO o keep track of the header rank inside the document:
DECLARE
acct_doc xmltype := xmltype( bfilename('TEST_DIR','acct.xml'), nls_charset_id('AL32UTF8') );
BEGIN
insert into xxrp_acct_details (status_code, status_remarks, segment_number, remarks)
select x1.status_code,
        x1.status_remarks,
        x2.segment_number,
        x2.remarks
from xmltable(
  '/ACCOUNT_HEADER_ACK/HEADER'
  passing acct_doc
  columns status_code    number        path 'STATUS_CODE',
          status_remarks varchar2(100) path 'STATUS_REMARKS'
) x1,
xmltable(
  '/ACCOUNT_HEADER_ACK/DETAILS'
  passing acct_doc
  columns segment_number number        path 'SEGMENT_NUMBER',
          remarks        varchar2(100) path 'REMARKS'
) x2
END;
I get this message:
Error report:
ORA-19114: error during parsing the XQuery expression: 
ORA-06550: line 1, column 13:
PLS-00201: identifier 'SYS.DBMS_XQUERYINT' must be declared
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored
ORA-06512: at line 4
19114. 00000 -  "error during parsing the XQuery expression: %s"
*Cause:    An error occurred during the parsing of the XQuery expression.
*Action:   Check the detailed error message for the possible causes.
My oracle version is 10gR2 Express Edition
I do need a script for loading xml files into a table as soon as possible
Thanks in advance!

Answer 1

Hello,
Your code is not readable (no code tags).
Anyway, you can use SQL*Loader to load a XML document into a table.
Here is the link of the documentation with both description and an example at the end of the
article.
http://docs.oracle.com/cd/B19306_01/appdev.102/b14259/xdb25loa.htm
Regards,
Dariyoosh