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Parsing Heap Dump Error in MAT [message #897390]

Tue, 24 July 2012 00:15

Mustafa Cayci

Messages: 3
Registered: July 2012

Junior Member

Hello,

I am using Windows 7 64Bit.

I have Eclipse

Eclipse Platform

Version: 3.6.2
Build id: M20110210-1200

I have MAT version 1.2.

I have a simple code that dumps heap

public class Main {

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
List<String> list = new ArrayList<String>();
while (1<2){
list.add("OutOfMemoryError soon");
}
}
}

When I tried to open in MAT, I am getting below

An internal error occurred during: "Parsing heap dump from 'D:\workspace\8032.hprof'".
allocLargeObjectOrArray: [J, size 695654576

THank you for your help.
Mustafa

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Re: Parsing Heap Dump Error in MAT [message #897914 is a reply to message #897390]

Wed, 25 July 2012 12:31

Jonathan Lawrence

Messages: 16
Registered: July 2009

Junior Member

Hi Mustafa,

I am not able to reproduce the exact symptoms you are seeing. Can you provide some more details:
- What JVM version are you using with your Eclipse to run the test which produces the dump?
- What maximum heap size (-Xmx) are you using for your test application?
- What is the size of the .hprof dump which is written when your test application goes OutOfMemory?
- How much physical memory do you have available on your test machine?

Have you tried increasing the available heap size for Memory Analyzer (in the file MemoryAnalyzer.ini) change the entry -Xmx1024m to -Xmx4G or larger depending on the amount of memory available on your system.

Regards Jonathan.

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