Transfer of xml file elements to data base columns

Question

hi all,
i have to store xml file's data(element values) into the data base(table columns).
i heard that we can acheive this by XSU.
IS it is mediator between xml and db? if yes how to install it.
i tried something as below
with t as (
select xmltype('<Message-Header>
<Message-Id>1234</Message-Id>
<Sender-Company-ID>4569</Sender-Company-ID>
<Sender-Company-Name>abc company</Sender-Company-Nam
<Sender-User-ID>AA</Sender-User-ID>
<Recv-Company-ID>050</Recv-Company-ID>
<Recv-Company-Name>XYZ pvt.ltd</Recv-Company-Name>
<Creation-Time>20101019 15:59:39</Creation-Time>
</Message-Header>') as xml from dual
)but i am getting following error. can anybody explain about this
SQL> ed
Wrote file afiedt.buf
  1  with t as (
  2  select xmltype('<Message-Header>
  3  <Message-Id>1234</Message-Id>
  4  <Sender-Company-ID>4569</Sender-Company-ID>
  5  <Sender-Company-Name>abc company</Sender-Company-Name>
  6  <Sender-User-ID>AA</Sender-User-ID>
  7  <Recv-Company-ID>050</Recv-Company-ID>
  8  <Recv-Company-Name>XYZ pvt.ltd</Recv-Company-Name>
  9  <Creation-Time>20101019 15:59:39</Creation-Time>
10  </Message-Header>') as xml from dual
11* )
SQL> /
with t as (
ERROR at line 1:
ORA-01041: internal error. hostdef extension doesn't existPlease help me..
my db version is Oracle Database 10g Release 10.2.0.1.0 - Production

Answer 1

Hi,
What are you trying to achieve with a single WITH clause and no SELECT?
Please see this from the documentation if you want to use it properly :
http://download.oracle.com/docs/cd/B19306_01/server.102/b14200/statements_10002.htm#i2077142
Apart from its true purpose of subquery factoring, the WITH clause is often use here and there to simulate a table content, but you'll always need a SELECT.
Maybe that's what you were trying to do?
As for your question, starting with release 10.2, Oracle provides XMLTable to shred XML documents into relational structures.
For example,
with t as (
select xmltype('<Message-Header>
<Message-Id>1234</Message-Id>
<Sender-Company-ID>4569</Sender-Company-ID>
<Sender-Company-Name>abc company</Sender-Company-Name>
<Sender-User-ID>AA</Sender-User-ID>
<Recv-Company-ID>050</Recv-Company-ID>
<Recv-Company-Name>XYZ pvt.ltd</Recv-Company-Name>
<Creation-Time>20101019 15:59:39</Creation-Time>
</Message-Header>') as xml from dual
select x.*
from t,
     XMLTable(
      '/Message-Header'
      passing t.xml
      columns
        message_id          number       path 'Message-Id',
        sender_company_id   number       path 'Sender-Company-ID',
        sender_company_name varchar2(30) path 'Sender-Company-Name',
        sender_user_id      varchar2(30) path 'Sender-User-ID',
        recv_company_id     varchar2(30) path 'Recv-Company-ID',
        recv_company_name   varchar2(30) path 'Recv-Company-Name',
        creation_time       varchar2(30) path 'Creation-Time'
     ) x
;If you're working in PL/SQL, and the XML resides in a variable, you can directly do (with necessary datatype conversion in the SELECT) :
insert into your_table ( <your_columns_list> )
select <your_columns_list>
from XMLTable(
      '/Message-Header'
      passing your_xml_var
      columns
        message_id          number       path 'Message-Id',
        sender_company_id   number       path 'Sender-Company-ID',
        sender_company_name varchar2(30) path 'Sender-Company-Name',
        sender_user_id      varchar2(30) path 'Sender-User-ID',
        recv_company_id     varchar2(30) path 'Recv-Company-ID',
        recv_company_name   varchar2(30) path 'Recv-Company-Name',
        creation_time       varchar2(30) path 'Creation-Time'
     ) x
;