Memory problem when store xml into XMLDB from CLOB source

Question

Hi,
We have performed a stress test and looped the following
stored procedures for 1500 XML documents.
We found the UGA and PGA memory for this oracle process increased tremendously.
PGA memory
==========
6MB -> 2.9GB
UGA memory
==========
5MB -> 2.8GB
We have also experienced ORA-4030 error when more XML documents were inserted.
The PGA & UGA memory would not ever be released. We have checked that
the PGA & UGA memory for this process are still 2.9GB & 2.8GB the day after the stress test.
Stored Procedure
================
create or replace procedure clob_to_xml (indocid IN NUMBER) AS
clobdoc clob := EMPTY_CLOB();
myParser dbms_xmlparser.Parser;
indomdoc dbms_xmldom.domdocument;
xsltdomdoc dbms_xmldom.domdocument;
xsl dbms_xslprocessor.stylesheet;
outdomdocf dbms_xmldom.domdocumentfragment;
outnode dbms_xmldom.domnode;
outclobdoc clob := EMPTY_CLOB();
proc dbms_xslprocessor.processor;
xsltpath doc_types.canonical_doc_trim_xslt_name%type;
xmltabname doc_types.xmldb_table_name%type;
doc_type doc_types.doc_type%type;
doc_type_version doc_types.doc_type_version%type;
category doc_types.category%type;
sqlstring varchar2(500);
outxmldoc xmltype;
begin
-- clobdoc := :new.canonical_doc_content;
begin
select canonical_doc_content into clobdoc
from canonical_doc
where dttn_doc_id = indocid;
exception
when no_data_found then raise_application_error(-20001,'Doc ID ' || indocid || ' cannot be found');
when others then raise;
end;
begin
select dt.canonical_doc_trim_xslt_name, dt.xmldb_table_name, ddi.doc_type,ddi.doc_type_version, dt.category
into xsltpath, xmltabname, doc_type, doc_type_version, category
from
dttn_doc_info ddi,
doc_types dt
where ddi.dttn_doc_id = indocid
and ddi.doc_type = dt.doc_type
and ddi.doc_type_version = dt.doc_type_version;
exception
when no_data_found then raise_application_error(-20001,'Doc Type is not defined');
-- when others then raise;
end;
if (category <> 0 ) then
--only support business document at this moment
return;
end if;
if (xsltpath is null or xsltpath = '') then
raise_application_error (-20001,'XSLT is not defined on doc_type table - ' || doc_type);
end if;
if (xmltabname is null or xmltabname = '') then
raise_application_error (-20001,'XMLTable is not defined on doc_type table - ' || doc_type);
end if;
myParser := dbms_xmlparser.newParser;
dbms_xmlparser.parseClob(myParser, clobdoc);
indomdoc := dbms_xmlparser.getDocument(myParser);
dbms_xmlparser.parseClob(myParser, xdbURIType(xsltpath).getClob());
xsltdomdoc := dbms_xmlparser.getDocument(myParser);
xsl := dbms_xslprocessor.newstylesheet(xsltdomdoc, '');
proc := dbms_xslprocessor.newProcessor;
--apply stylesheet to DOM document
outdomdocf := dbms_xslprocessor.processxsl(proc, xsl, indomdoc);
outnode := dbms_xmldom.makenode(outdomdocf);
-- PL/SQL DOM API for XMLType can be used here
dbms_lob.createTemporary(outclobdoc, true);
dbms_xmldom.writeToClob(outnode, outclobdoc);
begin
sqlstring := 'INSERT INTO ' || xmltabname || ' values (:1, :2)';
EXECUTE IMMEDIATE sqlstring USING indocid, outxmldoc;
exception
when others then
begin
rollback;
raise_application_error (-20001,'Cannot insert into XMLDB , docid = ' || indocid);
end;
end;
dbms_lob.freeTemporary(outclobdoc);
DBMS_XMLDOM.freeDocument(indomdoc);
DBMS_XMLDOM.freeDocument(xsltdomdoc);
DBMS_XMLDOM.freeDocFrag(outdomdocf);
DBMS_XMLPARSER.freeParser(myParser);
DBMS_XSLPROCESSOR.freeProcessor(proc);
end;
Is there anything wrong with the Stored Procedure ?
My oracle version is 10.1.0.4.
Thanks & Regards,
NM

Answer 1

Mark,
I think you missed it. OP gave you the version.
My oracle version is 10.1.0.4.Rahul.