Generating one PDF from a big XML file

Hi all,
We're running into an issue with our batch run with Documaker Studio 11. One of the invoice extracts generated for Documaker reached 200,000 lines (the body has a repeating section that generates has several thousand entries).
I've run our .BAT file on it as well as the test scenario and it takes forever to generate the PDF. Now we are wondering if there is a better way of generating such PDFs or do we resort to cutting the single extract into multiple PDFs? The template we use generates smaller PDFs quickly (6000 pdfs in less than 20 minutes).
Next question is: is this a Documaker limitation or is there a way for us to restructure the xml and our template so that we can generate this monstrous PDF in one go at an acceptable rate?
Thanks, Simon.

It doesn't appear yet that the blame falls on the PDF. Is this a Gendata with single-step print situation? Or are you using a 2-step Gendata then GenPrint executable?
The most likely scenario is related to memory use. The size of this run likely hits some level where thrashing starts to occur within the memory management of the operating system. You didn't mention, but this is likely running on a Windows box. Yes? What Windows version and what memory specifications do you have.
It will require much more memory to do a single-step GenData with print rule as that means the entire transaction generation is still in memory as well as the PDF that is being built. Unlike a regular print stream, PDFs are not typically spooled out in the same manner and consume memory while pages are completed.
A secondary question when you are talking about generating thousands of sections. Does this job rely upon some type of group and/or subform pagination to occur? That might be if you have "stay together" or "min or max on page" requirements. If this is your situation, the time may actually be in building the overall form set and not the actual print itself.
More information is required before establishing that this is a "big PDF" problem. It may be that it is a "big/complex transaction" problem.

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Hello,
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<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
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               <Data fileName="20mb.test">
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               </Data>
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         </ArchivedDocument>
      </ns2:GetDocumentByIDResponse>
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</soap:Envelope>
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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()');
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v_filename := '20mb_1.test';
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End Time
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Command
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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 :
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v_xml    xmltype := xmltype('<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
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                         <Value>2013-08-01+02:00</Value>
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                   <Data fileName="20mb.test">
                      <BinaryData>
                        ABC123
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             </ArchivedDocument>
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docNode   dbms_xmldom.DOMNode;
node      dbms_xmldom.DOMNode;
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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);
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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"
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