XML load error - when moving table data after upgrade

Question

Greetings:
Background:
Previously in our 2.2 instance, we would use the Data Load/Unload feature of APEX to move data in the form of XML from instance 1 to instance 2. This woks well because it moves images also (BLOB)
What Changed:
Recently we did the upgrade to APEX 3.0. The tool is working well, but we are having issues uploading XML data in the same manner we used to. The process wizard works up until time for execution.. the following error message is seen.
XML load error.
Return to application.
Assumption:
I do not believe this is an XML file issues because the file I am testing the process with is from the EMP table, and is from the UNLOAD option on the same DB and SCHEMA.. (testing is unloading the data, than re-loading the same data to the same place)
Internally some permissions or something internal must be missing.
Assistance or suggestions on where to look is greatly appreciated.
Regards,
Tim

Answer 1

Tim,
Sorry for the delay - that silly day job keeps getting in the way.
Here is a small procedure you could use to take the XML data file format exported from Application Express and import into your table. This uses the Java-dependent DBMS_XMLSAVE package, which avoids the issue mentioned above.
create or replace procedure load_xml(
    p_clob   in clob,
    p_schema in varchar2,
    p_table  in varchar2 )
is
    l_insCtx dbms_xmlsave.ctxType;
    l_rows   number;
begin
    l_insCtx := dbms_xmlsave.newContext(p_schema || '.' || p_table);
    dbms_xmlsave.setDateFormat(l_insCtx,'yyyy-MM-dd''T''HH:mm:ss.SSS');
    l_rows := dbms_xmlsave.insertXML( l_insCtx, p_clob);
    dbms_xmlsave.closeContext(l_insCtx);
end load_xml;I then ran the following quick test on apex.oracle.com just for verification.
declare
    l_xml varchar2(32000);
begin
    l_xml := '<?xml version="1.0"?>
<ROWSET>
<ROW>
  <ID>11645117496276327</ID>
  <FLOW_ID>30072</FLOW_ID>
  <NAME>F11645117496276327/no_image_found.gif</NAME>
  <FILENAME>no_image_found.gif</FILENAME>
  <MIME_TYPE>image/gif</MIME_TYPE>
  <CREATED_BY>JOEL</CREATED_BY>
  <CREATED_ON>2007-03-14T05:06:38.000</CREATED_ON> 
  <BLOB_CONTENT>474946383961C800...(data removed for this example)...41000003B</BLOB_CONTENT>
</ROW>
</ROWSET>';
    load_xml( l_xml, 'MY_DB_USER', 'MY_APEX_FILES' );
end;It's now simply a matter of how you get your XML file(s) into a CLOB to call this procedure. The options include:
1) Just pass in a VARCHAR2 as I did in the example above, which would limit you to roughly 32K.
2) You could use DBMS_LOB.LOADCLOBFROMFILE to read it from the database server filesystem.
3) You could upload the file via an APEX application (or some other means within APEX), you could convert the BLOB to a CLOB, and then call this procedure. If you need help with this method, let me know.
Don't forget - as yet another alternative, you could always contact Oracle Support to see what could be done about that underlying database bug.
I hope this helps.
Joel