It is the part of a stand alone process for the time being for testing,
after the testing I have write a code for the web-application.
// Get current size of heap in bytes
long heapSize = Runtime.getRuntime().totalMemory();
System.out.println("Initial heap size ="+heapSize );
// Get maximum size of heap in bytes. The heap cannot grow beyond this
size.
// Any attempt will result in an OutOfMemoryException.
long heapMaxSize = Runtime.getRuntime().maxMemory();
System.out.println("Maximum heap size ="+heapMaxSize );
// Get amount of free memory within the heap in bytes. This size will
increase
// after garbage collection and decrease as new objects are created.
long heapFreeSize = Runtime.getRuntime().freeMemory();
System.out.println("Maximum heap size ="+heapFreeSize );
Output:
Initial heap size =2031616
Maximum heap size =66650112
Maximum heap size =1677312
Regards
Awais Bajwa
-----Original Message-----
From: Mahesh Ganapathy [mailto:[EMAIL PROTECTED]
Sent: Thursday, October 02, 2008 2:01 PM
To: Awais Bajwa
Subject: Re: Out of Memoary Error while reading an EXCEL file
Do you have poi parser as a part of standalone application or as a part of
another webapplication. If it is running as a part of web application can
you see what the maximum memory as consumed by that application before
invoking poi calls?
------Original Message------
From: Awais Bajwa
To: 'POI Users List'
To: [EMAIL PROTECTED]
Subject: RE: Out of Memoary Error while reading an EXCEL file
Sent: Oct 2, 2008 12:58 PM
Hi Mahesh,
Following are the initial heap and maximum heap sizes I am currently using:
long heapSize = Runtime.getRuntime().totalMemory();
System.out.println("Initial heap size ="+heapSize ); ==> 2031616
long heapMaxSize = Runtime.getRuntime().maxMemory();
System.out.println("Maximum heap size ="+heapMaxSize ); ===> 66650112
-----Original Message-----
From: Mahesh Ganapathy [mailto:[EMAIL PROTECTED]
Sent: Thursday, October 02, 2008 1:17 PM
To: POI Users List
Subject: Re: Out of Memoary Error while reading an EXCEL file
What is the max jvm heap size? Are you running this on an app server?
Sent via BlackBerry by AT&T
-----Original Message-----
From: "Dobson, Paul L CTR USAF AFMC 416 SCMS/OBN" <[EMAIL PROTECTED]>
Date: Thu, 2 Oct 2008 10:34:37
To: POI Users List<[email protected]>
Subject: RE: Out of Memoary Error while reading an EXCEL file
I was having the same problem. I ended up using the event driven model
to parse the file. Then there is no limit on file size.
-----Original Message-----
From: Awais Bajwa [mailto:[EMAIL PROTECTED]
Sent: Thursday, October 02, 2008 10:34 AM
To: 'POI Users List'
Subject: Out of Memoary Error while reading an EXCEL file
Hi Folks,
I have an excel file that has many sheets and many rows, my requirement
is
to pick a specific cell from one row. But when I load the file that is
54MB
of excel file. I get an Out of memoary Error at:
fileSystem = new POIFSFileSystem (inputStream);
Any thoughts??? Any limitation of POI?
Regards
Awais
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