XML parser causes memory leakage, help!

I have the following function which called by other package to transfer xml. But every time it is called oracle will consume 600 to 700k memory and never release them. Any thought about it?
Function Transform(xml Clob,xsl Clob) Return Clob is
p xmlparser.Parser;
xmldoc xmldom.DOMDocument;
xsldoc xmldom.DOMDocument;
proc xslprocessor.Processor;
ss xslprocessor.Stylesheet;
cl Clob;
begin
p := xmlparser.newParser;
xmlparser.setValidationMode(p, FALSE);
xmlparser.setPreserveWhiteSpace(p, TRUE);
xmlparser.parseClob(p, xml); -- parse xml
xmldoc := xmlparser.getDocument(p);
xmlparser.parseClob(p, xsl); -- parse xsl
xsldoc := xmlparser.getDocument(p);
proc := xslprocessor.newProcessor;
ss := xslprocessor.newStylesheet(xsldoc, '');
dbms_lob.createtemporary(cl, TRUE);
xslprocessor.processXSL(proc, ss, xmldoc,cl);
xslprocessor.freeProcessor(proc);
xslprocessor.freeStyleSheet(ss);
xmlparser.freeParser(p);
return cl;
exception -- deal with exceptions
when xmldom.INDEX_SIZE_ERR then
raise_application_error(-20120, 'Index Size error');
when xmldom.DOMSTRING_SIZE_ERR then
raise_application_error(-20120, 'String Size error');
when xmldom.HIERARCHY_REQUEST_ERR then
raise_application_error(-20120, 'Hierarchy request error');
when xmldom.WRONG_DOCUMENT_ERR then
raise_application_error(-20120, 'Wrong doc error');
when xmldom.INVALID_CHARACTER_ERR then
raise_application_error(-20120, 'Invalid Char error');
when xmldom.NO_DATA_ALLOWED_ERR then
raise_application_error(-20120, 'Nod data allowed error');
when xmldom.NO_MODIFICATION_ALLOWED_ERR then
raise_application_error(-20120, 'No mod allowed error');
when xmldom.NOT_FOUND_ERR then
raise_application_error(-20120, 'Not found error');
when xmldom.NOT_SUPPORTED_ERR then
raise_application_error(-20120, 'Not supported error');
when xmldom.INUSE_ATTRIBUTE_ERR then
raise_application_error(-20120, 'In use attr error');
end Transform;
null

Would you try to free the alloced temporary lob whenever get Exception and try?
dbms_lob.createtemporary(cl, TRUE);
dbms_lob.freetemporary(cl);
Thanks.
null

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Oracle AQAPI causing memory leakage

Good day
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package com.strysie.aq;
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package com.strysie.aq;
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import java.sql.SQLException;
import oracle.jdbc.driver.OracleConnection;
import oracle.sql.CustomDatum;
import oracle.sql.CustomDatumFactory;
import oracle.sql.Datum;
import oracle.sql.STRUCT;
import oracle.sql.StructDescriptor;
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public String account;
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When I extract a thread dump I encounter the following on the Finalizer thread:
*"Finalizer" daemon prio=10 tid=0x00002aaab31c7800 nid=0x7469 waiting for monitor entry [0x0000000040a32000]*
java.lang.Thread.State: BLOCKED (on object monitor)
at oracle.jdbc.driver.OracleStatement.close(OracleStatement.java:1341)
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at oracle.AQ.AQOracleQueue.close(AQOracleQueue.java:3225)
at oracle.AQ.AQOracleQueue.finalize(AQOracleQueue.java:3364)
at java.lang.ref.Finalizer.invokeFinalizeMethod(Native Method)
at java.lang.ref.Finalizer.runFinalizer(Finalizer.java:83)
at java.lang.ref.Finalizer.access$100(Finalizer.java:14)
at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:160)
Please assist.
Best regards
Rudi

Can only 'guess' since the code is missing that shows how the connection and statement instances are being created, pooled and used.
Your code is not setting the 'wait' option for the dequeue and the default is DEQUEUE_WAIT_FOREVER for a message. So my 'guess' is that an instance of the code you show is 'waiting' for a message and keeping it's connection and statement open and then another thread is trying to use that connection and it is locked or another thread is trying to shutdown the application when the problem appears.
See Dequeuing Messages in the JDBC Developer's Guide
http://docs.oracle.com/cd/B28359_01/java.111/b31224/streamsaq.htm#BABJGBBA
>
•Wait: Specifies the wait time for the dequeue operation, if none of the messages matches the search criteria. The default value is DEQUEUE_WAIT_FOREVER indicating that the operation waits forever. If set to DEQUEUE_NO_WAIT, then the operation does not wait. If a number is specified, then the dequeue operation waits for the specified number of seconds.
>
Try setting the 'wait' option to DEQUEUE_NO_WAIT or to a number of seconds and see if the problem reoccurs.
NOTE: If this problem is occuring because another thread is trying to use this same connection when it is locked it probably means you have a problem in your connection pooling code since it would mean the connection pool is allowing another thread to use a connection that is already being used.

XML Parser and memory utilization

I am using the sample given with
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increase 50M until the system
runs out of virtual memory and
errors out. If I decrease the
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works ok. When I use Saxon to
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Hello,
I am facing a memory leak issue when I execute a dll created using CVI to read a XML file.
Each iteration of the step is taking around 200k of memory.
Short description of the code:
Basically I am using a function created in CVI to read from an XML file by tag which 2 attributes: command and the response;
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Each iteration I am loading the file, reading the file and discarding the file.
Attached you can find the CVI project, a TestStand sequence to test (ReadXML_test2.seq) and an example of a XML file I am using.
Please help me here.
Thaks in advance.
Regards,
Pedro Moreira
Attachments:
ReadXML_Prj.zip ‏1826 KB

Pedro,
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Detecting memory leaks in CVI is better explained in
http://www.ni.com/white-paper/10785/en/
http://www.ni.com/white-paper/7959/en/
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Message was edited by:
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hi all,
does making objects equal null help the gc handle memory leakage problems ?
does that help out the gc to collect unwanted objects ??
and how can I free memory avoid memory leakage problems on devices ??
best regards,
Message was edited by:
happy_life

Comments inlined:
does making objects equal null help the gc handle
memory leakage problems ?To an extent yes. During the mark phase it will be easier for the GC to identify the nullified objects on the heap while doing reference analysis.
does that help out the gc to collect unwanted objects
??Same answer as earlier, Eventhough you nullify the object you cannot eliminate the reference analysis phase of GC which definitelely would take some time.
and how can I free memory avoid memory leakage
problems on devices ??There is nothing like soft/weak reference stuffs that you get in J2SE as far as J2ME is concerned with. Also, user is not allowed to control GC behavior. Even if you use System.gc() call you are never sure when it would trigger the GC thread. Kindly as far as possible do not create new object instances or try to reuse the instantiated objects.
~Mohan

XML parsing error where none should be...please help!

From Oracle 10g, I am calling web service running in ASP.NET 1.1 on IIS 6.0 to print a document and return a simple 'PRINTED' message via soap.
The SOAP message I'm back from the web service is simply this:
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<soap:Body>
<PrintBOLResponse xmlns="http://tempuri.org/">
<PrintBOLResult>PRINTED</PrintBOLResult>
</PrintBOLResponse>
</soap:Body>
</soap:Envelope>
And the code and XPATH I am using to extract the message is:
-- Remove the <?xml version="1.0" encoding="utf-8"?> header
soap_respond := SUBSTR (soap_respond, 39, 10000);
-- Create an XMLType variable containing the Response XML
resp := XMLTYPE.createxml (soap_respond);
-- Attempt to extract the message that should be returned by the web service
resp := resp.EXTRACT ('/soap:Envelope/soap:Body/*/*/child::node()');
And it gives me this error:
ORA-31011: XML parsing failed
ORA-19202: Error occurred in XML processing
LPX-00601: Invalid token in: '/soap:Envelope/soap:Body/*/*/child::node()
When I test it out here: http://www.whitebeam.org/library/guide/TechNotes/xpathtestbed.rhtm
it parses just fine, and I cannot find any useful information on this LPX-00601 error.
Please help?

I'm sorry, the full response from the web service is:
<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
	<soap:Body>
		<PrintBOLResponse xmlns="http://tempuri.org/">
			<PrintBOLResult>PRINTED</PrintBOLResult>
		</PrintBOLResponse>
	</soap:Body>
</soap:Envelope>

URGENT HELP !!! ORA-31011: XML parsing failed

Hi,
Oracle 9.2.0.4
I've run into
ORA-31011: XML parsing failed ORA-19202: Error
occurred in XML processing LPX-00247: invalid
Document Type Declaration (DTD) Error at line 1
ORA-06512: at line 15
during updateXML operation under CLOB resource.
It seems to me, I can't update created resource
at all.
Is anybody knows the workaround ?
Please, help !!!
Thanks,
Viacheslav

No, it is an html file. For test purpose I've taken
welcome.html from ORACLE_HOME installation. Here are
my test:
declare
res0 bfile := BFILENAME('TEMPDIR', 'welcome.html');
res clob;
Amount INTEGER := 4000;
b BOOLEAN;
begin
Amount:=DBMS_LOB.getlength(res0);
DBMS_LOB.CREATETEMPORARY(res,TRUE);
DBMS_LOB.OPEN(res0, DBMS_LOB.LOB_READONLY);
DBMS_LOB.OPEN(res, DBMS_LOB.LOB_READWRITE);
DBMS_LOB.LOADFROMFILE(res, res0,Amount);
--DBMS_LOB.CLOSE(res0);
b:=DBMS_XDB.createresource
('/MyCONTENT/welcome.html',res);
commit;
end;
declare
res0 bfile := BFILENAME('TEMPDIR', 'welcome.html');
clob1 clob;
amt number := dbms_lob.lobmaxsize;
src_offset number := 1 ;
dst_offset number := 1 ;
lang_ctx number := dbms_lob.default_lang_ctx;
warning number;
Amount INTEGER := 4000;
begin
Amount:=DBMS_LOB.getlength(res0);
DBMS_LOB.CREATETEMPORARY(clob1 ,TRUE);
DBMS_LOB.OPEN(res0, DBMS_LOB.LOB_READONLY);
DBMS_LOB.OPEN(clob1 , DBMS_LOB.LOB_READWRITE);
-- DBMS_LOB.LOADFROMFILE(clob1 , res0,Amount);
dbms_lob.LOADCLOBFROMFILE(clob1 ,res0, amt, dst_offset,
src_offset,dbms_lob.default_csid, lang_ctx,warning) ;
UPDATE xdb.resource_view SET res=updatexml
(res,'/Resource/Contents/*',
WHERE any_path= '/MyCONTENT/welcome.html';
commit;
--dbms_lob.filecloseall() ;
end;

XMLElement cause ORA-31011: XML parsing failed

Hi,
already simple examples,
e.g. like descibed in tech articles 'SQL in,XML out',
cause always error 31011.
What is wrong?
Is something missing in my installation?
Worng version?
SQL> select xmlelement("KUNDEID",KUNDEID) from DSL_KUNDE;
ERROR:
ORA-31011: XML parsing failed
But normal SQL works fine and data is available:
SQL> select kundeid from dsl_kunde;
KUNDEID
1
2
3
Here is the SQL*Plus login message
SQL*Plus: Release 9.2.0.1.0 - Production on Mi Nov 12 17:14:42 2003
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
Connected to:
Oracle9i Enterprise Edition Release 9.2.0.4.0 - 64bit Production
With the Partitioning, OLAP and Oracle Data Mining options
JServer Release 9.2.0.4.0 - Production

Please post this message at:
Forums Home » Oracle Technology Network (OTN) » Products » Database » XML DB

Need help with error: XML parser failed: Error An exception occurred! Type:......

Need help with the following error.....what does it mean....28943 3086739136 XML-240304 3/7/07 7:13:23 PM |SessionNew_Job1 28943 3086739136 XML-240304 3/7/07 7:13:23 PM XML parser failed: Error <An exception occurred! Type:UnexpectedEOFException, Message:The end of input was not expected> at 28943 3086739136 XML-240304 3/7/07 7:13:23 PM line <7>, char <8> in <<?xml version="1.0" encoding="WINDOWS-1252" ?> 28943 3086739136 XML-240304 3/7/07 7:13:23 PM <DSConfigurations> 28943 3086739136 XML-240304 3/7/07 7:13:23 PM <DSConfiguration default="true" name="Configuration1"> 28943 3086739136 XML-240304 3/7/07 7:13:23 PM <case_sensitive>no</case_sensitive> 28943 3086739136 XML-240304 3/7/07 7:13:23 PM <database_type>Oracle</database_type> 28943 3086739136 XML-240304 3/7/07 7:13:23 PM <db_alias_name1>ODS_OWNER</db_alias_name1> 28943 3086739136 XML-240304 3/7/07 7:13:23 PM <db_ali>, file <>. 28943 3086739136 XML-240307 3/7/07 7:13:23 PM |SessionNew_Job1 28943 3086739136 XML-240307 3/7/07 7:13:23 PM XML parser failed: See previously displayed error message.Any help would be greatly appreciated. It's something to do with my datasource and possibly the codepage but I'm really not sure.-m 

please export your datastore as ATL and send it to support. Somehow the internal language around configurations got corrupted - never seen before.

XML parser causes memory leakage, help!

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