Big FMB files

We have a strange case with big FMB file (approximately 3 MB).
When i open the file in Forms Builder and store it in other directory the file change it size approximately to 2.5 MB.
After compilation and resaving the file it returns to original size - 3 MB.
Our programmer told me that sometimes he lose some triggers from the FMB while storing the file to other directory.
What can be a problem?
P.S. We are talking about v. 6i of Forms Builder.
Thanks!

The varying size of your form is nothing to be concerned of. see:
FMB size shrinks dramatically
Our programmer told me that sometimes he lose some triggers from the FMB while storing the file to other directory.Are those referenced triggers? Did you/he investigate a little? It's a little bit hard to diagnose a problem when the only information you have is that it exists (you know what? My database sometimes throws a no_data_found. Do you know why?) makes the solution to the problem more like a quiz show then a investigation...
cheers

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Hello,
i have a performance problem with the extraction from attributes in big XML Files. I tested with a size of ~ 30 mb.
The XML file is a response of a webservice. This response include some metadata of a document and the document itself. The document is inline embedded with a Base64 conversion. Here is an example of a XML File i want to analyse:
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
   <soap:Body>
      <ns2:GetDocumentByIDResponse xmlns:ns2="***">
         <ArchivedDocument>
            <ArchivedDocumentDescription version="1" currentVersion="true" documentClassName="Allgemeines Dokument" csbDocumentID="***">
               <Metadata archiveDate="2013-08-01+02:00" documentID="123">
                  <Descriptor type="Integer" name="fachlicheId">
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                  </Descriptor>
                  <InternalDescriptor type="Date" ID="DocumentDate">
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                  </InternalDescriptor>
                  
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            </ArchivedDocumentDescription>
            <DocumentPart mimeType="application/octet-stream" length="20971520 " documentPartNumber="0" representationNumber="0">
               <Data fileName="20mb.test">
                  <BinaryData>
                    
                  </BinaryData>
               </Data>
            </DocumentPart>
         </ArchivedDocument>
      </ns2:GetDocumentByIDResponse>
   </soap:Body>
</soap:Envelope>
Now i want to extract the filename and the Base64 converted document from this XML response.
For the extraction of the filename i use the following command:
v_filename := apex_web_service.parse_xml(v_xml, '//ArchivedDocument/ArchivedDocumentDescription/RepresentationDescription/DocumentPartDescription/@fileName');
For the extraction of the binary data i use the following command:
v_clob := apex_web_service.parse_xml_clob(v_xml, '//ArchivedDocument/DocumentPart/Data/BinaryData/text()');
My problem is the performance of this extraction. Here i created some summary of the start and end time for the commands:
Start Time
End Time
Difference
Command
10.09.13 - 15:46:11,402668000
10.09.13 - 15:47:21,407895000
00:01:10,005227
v_filename_bcm := apex_web_service.parse_xml(v_xml, '//ArchivedDocument/ArchivedDocumentDescription/RepresentationDescription/DocumentPartDescription/@fileName');
10.09.13 - 15:47:21,407895000
10.09.13 - 15:47:22,336786000
00:00:00,928891
v_clob := apex_web_service.parse_xml_clob(v_xml, '//ArchivedDocument/DocumentPart/Data/BinaryData/text()');
As you can see the extraction of the filename is slower then the document extraction. For the Extraction of the filename i need ~01
I wonder about it and started some tests.
I tried to use an exact - non dynamic - filename. So i have this commands:
v_filename := '20mb_1.test';
v_clob := apex_web_service.parse_xml_clob(v_xml, '//ArchivedDocument/DocumentPart/Data/BinaryData/text()');
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Start Time
End Time
Difference
Command
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10.09.13 - 16:02:33,212542000
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v_filename_bcm := '20mb_1.test';
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10.09.13 - 16:03:40,342396000
00:01:07,129854
v_clob := apex_web_service.parse_xml_clob(v_xml, '//ArchivedDocument/DocumentPart/Data/BinaryData/text()');
So i'm looking for a faster extraction out of the xml file. Do you have any ideas? If you need more informations, please ask me.
Thank you,
Matthias
PS: I use the Oracle 11.2.0.2.0

Although using an XML schema is a good advice for an XML-centric application, I think it's a little overkill in this situation.
Here are two approaches you can test :
Using the DOM interface over your XMLType variable, for example :
DECLARE
v_xml    xmltype := xmltype('<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
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          <ns2:GetDocumentByIDResponse xmlns:ns2="***">
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                      </Descriptor>
                      <Descriptor type="String" name="user">
                         <Value>***</Value>
                      </Descriptor>
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                         <Value>2013-08-01+02:00</Value>
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                   <Data fileName="20mb.test">
                      <BinaryData>
                        ABC123
                      </BinaryData>
                   </Data>
                </DocumentPart>
             </ArchivedDocument>
          </ns2:GetDocumentByIDResponse>
       </soap:Body>
    </soap:Envelope>');
domDoc    dbms_xmldom.DOMDocument;
docNode   dbms_xmldom.DOMNode;
node      dbms_xmldom.DOMNode;
nsmap     varchar2(2000) := 'xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns2="***"';
xpath_pfx varchar2(2000) := '/soap:Envelope/soap:Body/ns2:GetDocumentByIDResponse/';
istream   sys.utl_characterinputstream;
buf       varchar2(32767);
numRead   pls_integer := 1;
filename       varchar2(30);
base64clob     clob;
BEGIN
domDoc := dbms_xmldom.newDOMDocument(v_xml);
docNode := dbms_xmldom.makeNode(domdoc);
filename := dbms_xslprocessor.valueOf(
                docNode
              , xpath_pfx || 'ArchivedDocument/ArchivedDocumentDescription/RepresentationDescription/DocumentPartDescription/@fileName'
              , nsmap
node := dbms_xslprocessor.selectSingleNode(
            docNode
          , xpath_pfx || 'ArchivedDocument/DocumentPart/Data/BinaryData/text()'
          , nsmap
--create an input stream to read the node content :
istream := dbms_xmldom.getNodeValueAsCharacterStream(node);
dbms_lob.createtemporary(base64clob, false);
-- read the content in 32k chunk and append data to the CLOB :
loop
    istream.read(buf, numRead);
    exit when numRead = 0;
    dbms_lob.writeappend(base64clob, numRead, buf);
end loop;
-- free resources :
istream.close();
dbms_xmldom.freeDocument(domDoc);
END;
Using a temporary XMLType storage (binary XML) :
create table tmp_xml of xmltype
xmltype store as securefile binary xml;
insert into tmp_xml values( v_xml );
select x.*
from tmp_xml t
   , xmltable(
       xmlnamespaces(
         'http://schemas.xmlsoap.org/soap/envelope/' as "soap"
       , '***' as "ns2"
     , '/soap:Envelope/soap:Body/ns2:GetDocumentByIDResponse/ArchivedDocument/DocumentPart/Data'
       passing t.object_value
       columns filename    varchar2(30) path '@fileName'
             , base64clob clob         path 'BinaryData'
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SRC_OFFSET                     NUMBER(38)              IN     DEFAULT
<BR>
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DEST_OFFSET                    NUMBER(38)              IN     DEFAULT
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