Category: XML

01 Oct 2013 01:29

Joined:	07/10/2008
Level:	Bronze
Points:	-43

Points:	5

Out of Memory Exception : XMl doc

Are you looking for way resolve error Out of Memory Exception ? then read this thread to know more about it

I have a windows service running 24*7.This service load xml messages from a queue and load to database.
I have one worker thread which continuw to load messages.
I am using XDocument.Parse(xmlmessages)methid to parse the xml message.
then i call other method to serialize and deserialize the parsed xml message.
Once the messages is loaded to database i free the resources of XDocument object

XDocument=null..but sometime after running 30 hrs or 24 hrs i get Out of Memory Exception. please advice what i can do to free the memory resources.

#729460

01 Oct 2013 02:07

Joined:	17/03/2009
Level:	Gold
Points:	2282

Points:	2

Hi,

Check the below links

http://social.msdn.microsoft.com/Forums/en-US/44d8f867-4784-4fb6-93b8-fd28cb0008af/outerxml-throwing-out-of-memory-exception

http://stackoverflow.com/questions/3127699/why-would-an-out-of-memory-exception-be-thrown-if-memory-is-available

#729463

01 Oct 2013 02:18

Joined:	13/06/2007
Level:	Gold
Points:	21327

Points:	4

There exist several reasons behind 'Out of Memory Exception'
Some of them are
- Low hardware resources
- Database interaction without 'named pipe enable'
- Resources are not properly closed like datareader, stream reader, stream writer, XML reader etc.
Have you used xml reader to read your xml ? if yes then try to close it once work has finished with it.
try to use Dispose in your class/program it will really useful to free up memory.
i have write an article over it, you can check it below
http://www.dotnetspider.com/resources/43616-Cleanup-unmanaged-objects.aspx

Thanks
Koolprasd2003
Editor, DotNetSpider MVM
Microsoft MVP 2014 [ASP.NET/IIS]

#731340

22 Oct 2013 02:25

Joined:	07/10/2008
Level:	Bronze
Points:	-43

Points:	1

Hi Prasad,
the main class file main.cs
this class file contains one method

var xmlMessage= XDocument.Parse(strMessage);
var xData= GetXData.GetXML(xmlMessage);

then i free up the resource from xData like below

xData=null;

the other class file GetXData.cs
here i have the method..and in this class i get the out of memory exception.

public static GetXML GetXML(XDocument xml)
{
XmlSerializer serializer;
try
{
using (var reader = xml.CreateReader())
{
serializer = new XmlSerializer(typeof(XMLElementMessage), new XmlRootAttribute("Trade"));
return serializer.Deserialize(reader) as XMLElementMessage;
}
}
catch (Exception exp)
{
throw exp;
}
finally
{
serializer = null;
}
}

the XMLElementMessage.cs file have all the element of xml message defiled like this

[Serializable]
public class XMLElementMessage
{
public string Name { get; set; }
public string ID{ get; set; }
public string Dept{ get; set; }
public string Curr{ get; set; }
}

please let me know if you see any thing here where i should take care of memory issue?

Out of Memory Exception : XMl doc

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