How kann I store a very big file in to Oracle XML DB?

Question

Hello,
I´m looking for a fast method to store a XML file in to a oracle 10g XE. I had try to store the 500 kb file in to the database as a xmltype or a clob, but I still have the same Error: "ORA-01704: string literal too long". I´m looking for a long time for a possibility to store this file and another one(113 MB) in to the database. I had searched by google to see if any solution are available, and the unique solution found is to splitt the document in a loop statement(due to the 32 kb limit). But this solution don´t allow any storage with a XML Schema and is to slow.
here is an example how I did it(but it didn´t work):
create table Mondial(Nr int, xmldata xmltype);
INSERT INTO Mondial VALUES (1, 'big xml file');
I would also try the alternative with a bind variable like this:
create or replace PROCEDURE ProcMondial IS
poXML CLOB;
BEGIN
poXML := 'big xml file';
INSERT INTO Mondial VALUES (1, XMLTYPE(poXML));
EXCEPTION
WHEN OTHERS THEN
raise_application_error(-20101, 'Exception occurred in Mondial procedure :'||SQLERRM);
END ProcMondial;
I become also the same Error:String to long!
I am using sql developer for the Query.
please help me, I´m despaired.
thanks!
Michael

Answer 1

If you use the suggested statement
create table Mondial(Nr int, xmldaten xmltype) TABLESPACE mybigfile;than I hope for you that this XML data content will not be used for content driven procedures like selecting, updating or deletion of parts of XML data. The default for "xmltype" has a CLOB physical representation that, if not on 11g combining it with an XMLIndex, is only useful for document driven XML storage. That means - You ALWAYS delete, select, update or insert the WHOLE XML content (/per record basis). If this is not your intent, you will encounter performance problems.
Use instead Object Relational or Binary XML (11g) while using the XMLType datatype or the XMLType datatype in conjunction with CLOB based storage AND an XMLIndex if on 11g. Carefully read the first and/or second chapter of the 10/11g XMLDB Development Guide. Carefully choose your XMLType needed (and or XML design) if you don't want to be disappointed regarding the end result and/or have to redesign your XML tables.
A short introduction on the possibilities can be found here (not only 11g related btw): http://www.liberidu.com/blog/?p=203