Getting OutofMemoryError: Java heap space - expected best solution

Hi Friends,
Through Eclipse Editor, i am running a program whith reads one XML (one format) file and generates another XML file (in another format) based on requirement.
Basically it is conversion of Data from one XML to another XML. Because of the target file is having approx. 4000KB(expected memory) this leads a out of memory exception.
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
at org.jdom.ContentList.getView(ContentList.java:399)
at org.jdom.Element.getChildren(Element.java:1408)
at com.xenos.transform.kernel.ov.Rj(Unknown Source)
at com.xenos.transform.kernel.ov.Fh(Unknown Source)
at com.xenos.transform.kernel.ov.qj(Unknown Source)
at com.xenos.transform.kernel.jv.bj(Unknown Source)
at com.xenos.transform.kernel.ov.bj(Unknown Source)
at com.xenos.transform.kernel.input.InputHandler.endElement(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)
at org.apache.xerces.parsers.AbstractXMLDocumentParser.emptyElement(Unknown Source)
at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at com.xenos.transform.parser.sn.parse(Unknown Source)
at com.xenos.transform.kernel.ev.transform(Unknown Source)
at com.xenos.transform.kernel.ev.transform(Unknown Source)
at com.navis.lte.ExpressXMLTransorms.SourcexmlToTargetXML(ExpressXMLTransorms.java:64)
at com.navis.lte.ExpressXMLTransorms.main(ExpressXMLTransorms.java:36)
So, Please suggest me how to resolve this problem.
Thanks in advance
Madhava Rayalu

Hmm...
Eclipse Editor .... let me think..... could be a problem with Eclipse then ... :0
Try an Eclipse forum!
Timo

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Reading/Writing Bulk Data, getting OutOfMemoryError: Java heap space

Hello,
I am reading more than a million record using CursoredStream, following is my code snippet for reading data
ReadAllQuery query = new ReadAllQuery();
query.setReferenceClass(DataBk.class);
query.useCursoredStream();
CursoredStream stream;
stream = (CursoredStream)dbses.executeQuery(query);
       while (!stream.atEnd()) {
       vector1 = stream.read(stream.size());
       }       Problem is I am getting
Exception in thread "main" java.lang.OutOfMemoryError: Java heap spaceI was reading other forums posts about this and it is mentioned that memory heap size could be increased.
Where do I increase memory heap size?
java.lang.OutOfMemoryError while opening 9.0.4.5 mwp in 10.1.3.3
Besides, if my above code is not alright, someone could suggest best approach for reading and writing bulk data.
Regards
Edited by: user20090209 on Oct 14, 2009 10:17 AM

Hello,
If you are reading a million records and running out of heap, you will still get the exception by reading it using a cursor one at a time. It also depends on how the driver is processing the million records. Using a scrollable cursor might help ( http://wiki.eclipse.org/Using_Advanced_Query_API_(ELUG) ), increasing the heap as suggested will (In Jdev, Java options can be added to the project properties->Run/Debug/Profile->Launch settings), or even changing your app design to use objects more efficiently all around. It depends on what your are using the objects for, but even using pagination (via setting the firstRows/maxResults on a query) to limit the results returned can help depending on how the application requires the objects. What is important is that the objects be free for garbage collection when you are done processing them, and before the next batch needs to be brought in from the database.
Also, common problems are that reading in one object can bring in multiple trees if relationships aren't managed efficiently. Only use relationships where required, and use indirection where ever possible.
Best Regards,
chris

One app service getting "java.lang.OutOfMemoryError: Java heap space"

We are running a commercial app on WebLogic 9.2. Two physical servers with 5 application processes running on each in a single cluster. on the server in question, we have 5.5 gigs of free ram at the moment and still getting the message below.
We have 10 app servers and one is getting this message. the full text of it is:
####<Apr 13, 2011 10:58:12 AM CDT> <Warning> <DeploymentService> <lxwbwapa> <workbpr2_node_1a> <[ACTIVE] ExecuteThread: '6' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1302710292663> <BEA-290064> <Deployment service servlet encountered an Exception while handling the deployment service message for request id "-1" from server "Admin_pr2_a". Exception is: "java.lang.OutOfMemoryError: Java heap space
".>
I dug back through the logs and found it started a couple of weeks ago. I have been able to log into this app server without issue.
Something else I have noticed is that the total heap size for all the app services have shrunk from the initial value of 1.5G - they have all dropped down into the 500 meg range. Is this normal? Why has this one not increased the size of the heap if it is running out of memory?
I could restart the service for this app server but I would not know the cause and since it is a production server where I am not recieving complaints, I am hesitant to go through the res tape to do a re-start.
Any information or past experience with this type issue is greatly appreciated.
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Hello,
You might want to post this in the weblogic forum: WebLogic Server - General
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Getting java.lang.outofmemoryerror: Java heap space error

I am using coldfusion 8. I frequently get the error 'java.lang.outofmemoryerror: Java heap space'. Can anyone help me?
Error Details :
500
Root cause:
java.lang.outofmemoryerror: Java heap space
javax.servlet.servletException: Root Cause:
java.lang.outofmemoryerror: Java heap space
Thanks in advance,
Regards,
Satheesh.

Well... what does the error message tell you is wrong? You're running out of memory. I presume you understand how computer memory works, if not specifically how Java memory allocation works. So... you have x amount of memory, and you're trying to use >x amount of memory. You can't do that. There are two approaches to dealing with a problem like this:
a) have more memory;
b) use less memory.
What are your JVM memory settings? They're in jvm.config dir, which'll be - by default - in your Jrun4/bin dir for a multi-server install, or somewhere like ColdFusion/runtime/bin or something like that on a stand-alone install.
Next... what are you loading into memory? This is trickier to answer. But every variable you create takes up memory. People often load up the application or session scopes with stuff that's "convenient" to store in shared-scope memory, but really chew through it. Putting CFC instances in the session scope is a really good way to waste memory, as they seem to have quite a large footprint.
It's really impossible to say what's eating the memory based on what info you've given us (basically: none), but you can use things like FusionReactor to examine what's going into memory. Or CF* Enterprise has some of its own memory profiling stuff... I've never used it but it might be of some use.
Have you googled "coldfusion java.lang.outofmemory"?
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How to solve this ERROR --java.lang.OutOfMemoryError: Java heap space

I am Trying to read one TEXT file line by line. file size is approx. 7 MB or it contain approx. 35000 line of text.
i am processing that file and export data into another file.
mean while after some line i get error like below,
java.lang.OutOfMemoryError: Java heap space
After this error process stop.
my application is in Java Swing and i m using java 1.5 version of SDK and JRE.
is it a JDK version Problem?
please can any one give me appropriate solutions for this.
give me answer please.............

Are you able to post the code you use to read the file? Initially, I'd guess that you're stuck in a loop. Make sure you're getting out of all your loops. You can do this with breakpoints in your IDE's debugger, or by putting a println right after the loop.
It may also be that your IDE isn't allotted enough of your system's memory, though I doubt that is the case. You can easily google how to increase the memory allotted to the IDE.
For some reason, garbage collection isn't happening as you're expecting. Make sure you're not holding on to huge stuff any longer than you need to.
Edited by: Caryy on Aug 14, 2010 5:57 PM

"java.lang.OutOfMemoryError: Java heap space" while trying to read Excel.

Hi Experts,
Here is my query. I'm trying to upload excel data into database table. This excel contains more than 20000 records. I'm storing this data in a vector after reading it & passing this vector as a parameter to another method(not mentioned in the below code) which writes into the database. The code works for records <4000, but fails to read beyond that & throws exception as below.
HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: Java heap space
     org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:433)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:355)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
root cause
javax.servlet.ServletException: Java heap space
     org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:841)
     org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:774)
     org.apache.jsp.readexcelsap_jsp._jspService(readexcelsap_jsp.java:365)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:331)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
root cause
java.lang.OutOfMemoryError: Java heap space
Below is the code for reference. Kindly Help me in getting this heap space error rectified or suggest me alternate ways.
I tried increasing Heap space as googled but in vain.
<%!
private Vector readExcelSheet(String uploadedFilePath, int sheetNo) throws IOException
     Vector allRowInfo = null;
        try
            HSSFSheet sheet= getWorkSheet(uploadedFilePath,sheetNo);
            //System.out.println(uploadedFilePath);
            //System.out.println(sheetNo);
            //System.out.println("--Sheet--"+sheet);
            //System.out.println("--Sheet--"+sheet.getLastRowNum());
            if(sheet!=null)
            allRowInfo = new Vector();
            for(int i=0;i<=sheet.getLastRowNum();i++)
                HSSFRow row= sheet.getRow(i);
                Vector eachRowInfo = new Vector();
                for(short j=0;j<row.getLastCellNum();j++)
                    eachRowInfo.add(getCellContents(row.getCell(j)));
                    //System.out.println("--"+row.getCell(j));
                allRowInfo.add(eachRowInfo);
            else
                 allRowInfo = null;
            //return allRowInfo;
        catch (FileNotFoundException ex)
             System.out.println("-- Error in reading--getWorkSheet -- 1--"+ex);
             allRowInfo = null;
        catch (IOException ex)
             System.out.println("-- Error in reading--getWorkSheet-- 2 --"+ex);
             allRowInfo = null;
        catch (IndexOutOfBoundsException ex)
             System.out.println("-- Error in reading--getWorkSheet-- 2 --"+ex);
             allRowInfo = null;
        catch (NullPointerException ex)
             System.out.println("-- Error in reading--getWorkSheet --"+ex);
             allRowInfo = null;
        catch(Exception e)
            System.out.println(e.getMessage());
            e.printStackTrace();
             allRowInfo = null;
        return allRowInfo;
%>
<%!
private HSSFSheet getWorkSheet(String uploadedFilePath, int sheetNo) throws IOException
        HSSFSheet sheet = null;
        try
            FileInputStream inputStream=new FileInputStream(uploadedFilePath);
            POIFSFileSystem poisFile=new POIFSFileSystem(inputStream);
            HSSFWorkbook workBook= new HSSFWorkbook(poisFile);
            sheet = workBook.getSheetAt(sheetNo);
        catch (FileNotFoundException ex)
             System.out.println("-- Error in reading--getWorkSheet --"+ex);
             sheet = null;
        catch (IOException ex)
             System.out.println("-- Error in reading--getWorkSheet --"+ex);
             sheet = null;
        catch (IndexOutOfBoundsException ex)
             System.out.println("-- Error in reading--getWorkSheet --"+ex);
             sheet = null;
        catch (NullPointerException ex)
             System.out.println("-- Error in reading--getWorkSheet --"+ex);
             sheet = null;
        catch(Exception e)
            System.out.println(e.getMessage());
            e.printStackTrace();
            sheet = null;
         return sheet;
%>
<%!
public String getCellContents(HSSFCell cell)
        String cellValue="";
        String cellValue1="";
        if(cell!=null)
             int cellType= cell.getCellType();
            if(cellType==HSSFCell.CELL_TYPE_NUMERIC)
                cellValue=(float)cell.getNumericCellValue()+"";
            if(cellType==HSSFCell.CELL_TYPE_STRING)
                 cellValue1=cell.getStringCellValue();
                 StringBuffer sb = new StringBuffer();
                 for(int i = 0; i < cellValue1.length(); i++)
                        sb.append(cellValue1.charAt(i));
                     if(cellValue1.charAt(i)=='\'')
                          sb.append('\'');
                 cellValue = sb.toString();
       return cellValue;
%>
<html>
<body>
<%
     String file_Name="Myexcel.xls";
     String path = "D://Test Upload//"+file_Name;
     Vector list = readExcelSheet(path,0);
</html>
</body>Regards
Venky
Edited by: Venky_86 on Jun 17, 2009 6:05 AM

HOW did you increase the heap space? As that is the only solution you have in this case really.
It is a known fact that POI can use up a lot of memory for big spreadsheets. If at all possible, I would try to switch to plain text comma separated files / tab delimited files. If you cannot do that, I would try to put a size restriction on the sheets that your application will process to get rid of the heap space risk. A sheet can contain 20000 records, or four sheets can contain 5000 records; in both cases you process the exact same data, but at only 25% of the total memory usage.

OracleAS: java.lang.OutOfMemoryError: Java heap space

Hi all,
Now I'm using Oracle AS 10.1.3.0, and after some hours, the error "java.lang.OutOfMemoryError: Java heap space" appeared.
And this is the information of OracleAS memory when it has error:
Memory MXBean
Heap Memory Usage: init = 268,435,456(262,144K) used = 112,462,248(109,826K) committed = 396,558,336(387,264K) max = 517,013,504(504,896K)
Non-Heap Memory Usage: init = 16,973,824(16,576K) used = 98,829,840(96,513K) committed = 99,319,808(96992K) max = 167,772,160(163,840K)
Memory Pool MXBeans
Code Cache
Type: Non-heap memory
Usage: init = 196608(192K) used = 27540032(26894K) committed = 27885568(27232K) max = 33554432(32768K)
Peak Usage: init = 196608(192K) used = 27556992(26911K) committed = 27885568(27232K) max = 33554432(32768K)
PS Eden Space
Type:Heap memory
Usage:init = 22478848(21952K) used = 26278816(25662K) committed = 50069504(48896K) max = 54722560(53440K)
Peak Usage: init = 22478848(21952K) used = 57802752(56448K) committed = 57802752(56448K) max = 58589184(57216K)
Collection Usage:init = 22478848(21952K) used = 0(0K) committed = 50069504(48896K) max = 54722560(53440K)
PS Survivor Space
Type: Heap memory
Usage: init = 3670016(3584K) used = 1082080(1056K) committed = 2424832(2368K) max = 2424832(2368K)
Peak Usage: init = 3670016(3584K) used = 19857256(19391K) committed = 19857408(19392K) max = 19857408(19392K)
Collection Usage: init = 3670016(3584K) used = 1082080(1056K) committed = 2424832(2368K) max = 2424832(2368K)
PS Old Gen
Type: Heap memory
Usage: init = 238616576(233024K) used = 85108712(83113K) committed = 344064000(336000K) max = 477233152(466048K)
Peak Usage: init = 238616576(233024K) used = 477233152(466048K) committed = 477233152(466048K) max = 477233152(466048K)
Collection Usage: init = 238616576(233024K) used = 85108712(83113K) committed = 344064000(336000K) max = 477233152(466048K)
PS Perm Gen
Type: Non-heap memory
Usage: init = 16777216(16384K) used = 71289808(69618K) committed = 71434240(69760K) max = 134217728(131072K)
Peak Usage: init = 16777216(16384K) used = 71289808(69618K) committed = 71696384(70016K) max = 134217728(131072K)
Collection Usage: init = 16777216(16384K) used = 71177496(69509K) committed = 71434240(69760K) max = 134217728(131072K)
And this is runtime prarameter:
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Any one can help me?
Rgds.

Think about what happens in your program. If your program loads lots of data into memory of the AS (=heap) and you have lots of users, then you can get errors like this. The obvious solution is to start raising the heapsize, but you cannot do that anymore, since you're out of physical memory.
So with the information I have seen so far, in this case you either have to buy more memory, get less users or refactor your program.

10Mb .swf compilation - OutOfMemoryError: Java heap space...

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Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
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When I increase try jave heap from "-Xmx1024" to "-Xmx1200" or more memory for jave heap I stable getting:
# A fatal error has been detected by the Java Runtime Environment:
# Internal Error (0xe06d7363), pid=3796, tid=3048
# JRE version: 6.0_16-b01
# Java VM: Java HotSpot(TM) Client VM (14.2-b01 mixed mode windows-x86 )
# Problematic frame:
# C [kernel32.dll+0x12afb]
# An error report file with more information is saved as:
# C:\svn\xxx\components\xxx\output\hs_err_pid3796.log
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
Compilation process looks like this:
Have anybody idea how can I compile my .swf? Thanks.

Hi Joseph,
I'm having the same problem with CWLMS 4.0.1. But I didn't find this file heap.properties in the
/opt/CSCOpx/MDc/tomcat/webapps/rme/WEB-INF/classes/com/cisco/nm/rmeng/cli/framework/
Do you know where I customize this parameter in that version?
Thanks,
Patricia Oliveira

OutOfMemoryError: Java heap space

Hi There
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please help me out how to resolved this issue.
Application: Oracle Ebs-R12(12.1.2)
DB: 11.1.0.7
OS: linux 5*86x64
Waiting for valuable response.
Regards,
Mohsin

Hi Hussein
I have a question on this OPP java heap space .
Let say I have 10 Process allocated for OPP and heap space allocated to OPP is 1024 MB.
Q 1 . Let say 5 requests are running by 5 OPP processes.. Then how this heap memory allocated ?
is it something like heap space / number of running requests by OPP (1024/5 in this case )
Q 2. Let say i have submitted 2 requests . One request needs 800 MB of heap space (based on the past runs )
And Second one requires 500 MB of heap space .
In this we will get java out of memory error ? Am I correct ?
Q 3 . Will all requests after submitted after test case 2 ( Q 2) encounter out of memory errors Since the heap space was exhausted until OPP bounced or full /GC Completed/
Please Correct me if I am wrong
--Thanks In advance.

Trouble with "java.lang.OutOfMemoryError: Java heap space"

Hello,
I use a Java-based modeling tool that very few out there are probably familiar with. This tool allows me to run models (program) from within the development environment, to create Applets or create jar files that can be executed in a stand-alone fashion.
I am using a database on my local harddrive to read in some data using JDBC, so am not using the Applet option with certificates. The development environment is expensive, so can't be distributed. That leaves the stand-alone option.
The model (program) I've written runs perfectly fine in the development environment and, previously, has worked fine as a stand-alone program. However, the stand-alone option isn't working anymore, because I keep getting this error.
I am not much of a Java programmer; I'm learning as I go along. If anyone can help me solve this, I'll be most appreciative
From my cmd prompt:
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C:\Documents and Settings\072\Desktop\TA\for\for Applet Files>java -cl
asspath enterprise_library.jar;business_graphics_library.jar;for.jar;xjanylog
ic5engine.jar for/Main$Simulation
Started...
AnyLogic simulation engine has started [$Id: Engine.java,v 1.134 2004/12/03 08:4
9:39 basil Exp $]
java.lang.OutOfMemoryError: Java heap space
setting error: Exception during root.courseQueue-1556 startup: java.lang.OutOfMe
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thread = Thread[Model Creation Thread,5,main]
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Exception in thread "Image Fetcher 0" java.lang.OutOfMemoryError: Java heap spac
e
java.lang.OutOfMemoryError: Java heap space
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thread = Thread[Model Creation Thread,5,main]
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Hi I am ancountering the same problem with the 'heap space'.
Is there any way I can find out what it is set to for my system? I dont believe its 32Mb and dont want to increase it randomly to too large a size if theres no need for it.
Thanks,
Bobby

Java.lang.OutOfMemoryError: Java heap space

I am writing an application in struts for file downloading from the database. I am using struts 1.1 with tomcat5.0 server. File downloading is working fine for images of smaller sizes( i checked utpo 3mb of size). my application should download the files with a maximum 1gb size. But when I tried to download the image of 85mb, "out of memory" exception is thrown" and this is the complete trace of that exception...
Oct 19, 2006 4:11:35 PM org.apache.struts.actions.DispatchAction dispatchMethod
SEVERE: Dispatch[pages/DoctorModule/medicalrecord/frame/referencedoc] to method getReportFormat returned an exception
java.lang.reflect.InvocationTargetException
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
     at java.lang.reflect.Method.invoke(Unknown Source)
     at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:280)
     at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:216)
     at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:480)
     at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
     at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1420)
     at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:520)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
     at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
     at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
     at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
     at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
     at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.OutOfMemoryError: Java heap space
Oct 19, 2006 4:11:35 PM org.apache.struts.action.RequestProcessor processException
WARNING: Unhandled Exception thrown: class java.lang.IllegalStateException
I checked using downloading action example from struts1.2.6, even thats giving the same out of memory exception. Any how my application uses only 1.1. so Please give me some solution for this exception..

Finally, the problem was :
    jstring str;
    for(int i = 0; i < xxx.GetSize(); i++){
        CString cstr = xxx.GetAt(i);
        str = env->NewStringUTF(cstr.GetBuffer(0));
        env->SetObjectArrayElement(secondParam, i, str);
        /* release memory */
        env->DeleteLocalRef(counterUIName);
    }The "DeleteLocalRef(counterUIName);" should be made for each iteration.
Thanks,
Alex..

Read from txt file - .OutOfMemoryError: Java heap space

I hava a text file. Read row by row and add every row to the LinkedMap. If number of row in file are 2 000 - OK it's work. But when number of rows > 2 500 I get the next exception:
Exception in thread "AWT-EventQueue-0" java.lang.OutOfMemoryError: Java heap space
[java] at java.util.Arrays.copyOf(Unknown Source)
[java] at java.lang.AbstractStringBuilder.expandCapacity(Unknown Source)
[java] at java.lang.AbstractStringBuilder.append(Unknown Source)
[java] at java.lang.StringBuffer.append(Unknown Source)
[java] at java.io.BufferedReader.readLine(Unknown Source)
[java] at java.io.BufferedReader.readLine(Unknown Source)
try {
         File sourceImportFile = getSourceImportFile();
         FileInputStream fin = new FileInputStream(sourceImportFile
               .getPath());
         BufferedReader br = new BufferedReader(new InputStreamReader(fin));
         String line;
         while ((line = br.readLine()) != null) { // HERE THROW java.lang.OutOfMemoryError: Java heap space
...

malcolmmc wrote:
Well, it looks like it may be seeing an enormously long line. Are you sure the file you are reading is sensibly formatted?
According to the stack trace it's crashing when readLine tries to make more room for the line of text being read.
It's either that or you really are storing more data than you have room for, and 2,500 lines is not a very large file.It did occur to me that he might be trying to read a binary file as if it were a text file.

Servlet - java.lang.OutOfMemoryError: Java heap space

Hi,
Does anyone know how to debug this error !!
regards,
Manmohan
java.lang.OutOfMemoryError: Java heap space
2006-05-12 11:38:16,485 INFO [STDOUT] SATS ERROR: DispatcherServlet system exception: Servlet execution threw an exception
2006-05-12 11:38:16,485 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[drugtest]] System Exception!
javax.servlet.ServletException: Servlet execution threw an exception
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:275)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
     at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
     at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
     at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:359)
     at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
     at com.auriga.drugtest.web.servlets.DispatcherServlet.redirect(DispatcherServlet.java:51)
     at com.auriga.drugtest.web.servlets.DispatcherServlet.service(DispatcherServlet.java:31)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
     at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
     at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:39)
     at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:153)
     at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:59)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
     at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
     at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
     at java.lang.Thread.run(Thread.java:595)

Where to change/set the memory size in config file. I am using tomcat 6.0, when i start to browse my application i am getting this error. But this error is not coming on all the systems which we work ,only on one system I am getting this type of error. What should I do. If there is a memory leak how to find it out?. our application user very huge memory and we cannot change/reduce the code. this is the error
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: javax.servlet.ServletException: java.lang.NoClassDefFoundError: org/apache/commons/collections/SequencedHashMap
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:522)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:398)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:337)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
root cause
javax.servlet.ServletException: java.lang.NoClassDefFoundError: org/apache/commons/collections/SequencedHashMap
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:850)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:779)
org.apache.jsp.include.do_005flogin_jsp._jspService(do_005flogin_jsp.java:436)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:337)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
root cause
java.lang.NoClassDefFoundError: org/apache/commons/collections/SequencedHashMap
org.hibernate.mapping.Table.<init>(Table.java:33)
org.hibernate.cfg.Mappings.addTable(Mappings.java:165)
org.hibernate.cfg.HbmBinder.bindRootPersistentClassCommonValues(HbmBinder.java:290)
org.hibernate.cfg.HbmBinder.bindRootClass(HbmBinder.java:273)
org.hibernate.cfg.HbmBinder.bindRoot(HbmBinder.java:144)
org.hibernate.cfg.Configuration.add(Configuration.java:669)
org.hibernate.cfg.Configuration.addInputStream(Configuration.java:504)
org.hibernate.cfg.Configuration.addResource(Configuration.java:566)
org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:1587)
org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:1555)
org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1534)
org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1508)
org.hibernate.cfg.Configuration.configure(Configuration.java:1428)
org.hibernate.cfg.Configuration.configure(Configuration.java:1414)
esq.connector.ConnectorFactory.prepareConnection(Unknown Source)
esq.connector.ConnectorFactory.<init>(Unknown Source)
esq.connector.ConnectorFactory.getConnector(Unknown Source)
esq.connector.ConnectorFactory.getUserConnector(Unknown Source)
esq.common.session.UserSession.authenticate(Unknown Source)
esq.modules.user.LogonManager.doLogin(Unknown Source)
org.apache.jsp.include.do_005flogin_jsp._jspService(do_005flogin_jsp.java:404)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:337)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.16 logs.

How to solve : java.lang.OutOfMemoryError: Java heap space

Dear all,
Am using Jdeveloper 11.1.1.3 with weblogic10...
I keep getting out of memory error while working on the application , here is the exact error message that i copied from the server log :
####<28/11/2010 GMT 09:17:58 ص> <Critical> <Health> <javaserver> <AdminServer> <weblogic.GCMonitor> <<anonymous>> <> <3e9ac2aaa3059905:3bfb8868:12c91bef422:-8000-0000000000000012> <1290935878582> <BEA-310003> <Free memory in the server is 4,541,416 bytes. There is danger of OutOfMemoryError>
####<28/11/2010 GMT 09:24:51 ص> <Error> <Kernel> <javaserver> <AdminServer> <[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <3e9ac2aaa3059905:3bfb8868:12c91bef422:-8000-0000000000000029> <1290936291218> <BEA-000802> <ExecuteRequest failed
java.lang.OutOfMemoryError: Java heap space.
java.lang.OutOfMemoryError: Java heap space
>
####<28/11/2010 GMT 09:25:04 ص> <Notice> <Diagnostics> <javaserver> <AdminServer> <[ACTIVE] ExecuteThread: '3' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <3e9ac2aaa3059905:3bfb8868:12c91bef422:-8000-000000000000002c> <1290936304406> <BEA-320068> <Watch 'UncheckedException' with severity 'Notice' on server 'AdminServer' has triggered at 28/11/2010 GMT 09:24:56 ص. Notification details:
WatchRuleType: Log
WatchRule: (SEVERITY = 'Error') AND ((MSGID = 'BEA-101020') OR (MSGID = 'BEA-101017') OR (MSGID = 'BEA-000802'))
WatchData: DATE = 28/11/2010 GMT 09:24:51 ص SERVER = AdminServer MESSAGE = ExecuteRequest failed
java.lang.OutOfMemoryError: Java heap space.
java.lang.OutOfMemoryError: Java heap space
SUBSYSTEM = Kernel USERID = <WLS Kernel> SEVERITY = Error THREAD = [ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)' MSGID = BEA-000802 MACHINE = javaserver TXID = CONTEXTID = 3e9ac2aaa3059905:3bfb8868:12c91bef422:-8000-0000000000000029 TIMESTAMP = 1290936291218
WatchAlarmType: AutomaticReset
WatchAlarmResetPeriod: 30000
>
####<28/11/2010 GMT 09:25:36 ص> <Warning> <oracle.dfw.framework> <javaserver> <AdminServer> <[ACTIVE] ExecuteThread: '3' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <3e9ac2aaa3059905:3bfb8868:12c91bef422:-8000-000000000000002c> <1290936336549> <DFW-40121> <failure creating incident from WLDF notification
java.lang.OutOfMemoryError: Java heap space
>
####<28/11/2010 GMT 09:26:32 ص> <Notice> <WebLogicServer> <javaserver> <AdminServer> <Thread-1> <<WLS Kernel>> <> <3e9ac2aaa3059905:3bfb8868:12c91bef422:-8000-000000000000002f> <1290936392224> <BEA-000388> <JVM called WLS shutdown hook. The server will force shutdown now>
####<28/11/2010 GMT 09:26:35 ص> <Alert> <WebLogicServer> <javaserver> <AdminServer> <Thread-1> <<WLS Kernel>> <> <3e9ac2aaa3059905:3bfb8868:12c91bef422:-8000-000000000000002f> <1290936395303> <BEA-000396> <Server shutdown has been requested by <WLS Kernel>>
####<28/11/2010 GMT 09:26:35 ص> <Notice> <WebLogicServer> <javaserver> <AdminServer> <Thread-1> <<WLS Kernel>> <> <3e9ac2aaa3059905:3bfb8868:12c91bef422:-8000-000000000000002f> <1290936395303> <BEA-000365> <Server state changed to FORCE_SUSPENDING>
####<28/11/2010 GMT 09:26:53 ص> <Notice> <WebLogicServer> <javaserver> <AdminServer> <Thread-1> <<WLS Kernel>> <> <3e9ac2aaa3059905:3bfb8868:12c91bef422:-8000-000000000000002f> <1290936413632> <BEA-000365> <Server state changed to ADMIN>
####<28/11/2010 GMT 09:26:56 ص> <Notice> <WebLogicServer> <javaserver> <AdminServer> <Thread-1> <<WLS Kernel>> <> <3e9ac2aaa3059905:3bfb8868:12c91bef422:-8000-000000000000002f> <1290936416757> <BEA-000365> <Server state changed to FORCE_SHUTTING_DOWN>
####<28/11/2010 GMT 09:26:59 ص> <Notice> <Server> <javaserver> <AdminServer> <DynamicListenThread[Default[1]]> <<WLS Kernel>> <> <3e9ac2aaa3059905:3bfb8868:12c91bef422:-8000-0000000000000035> <1290936419289> <BEA-002607> <Channel "Default[1]" listening on 127.0.0.1:7001 was shutdown.>
####<28/11/2010 GMT 09:27:07 ص> <Notice> <WebLogicServer> <javaserver> <AdminServer> <Thread-41> <<WLS Kernel>> <> <3e9ac2aaa3059905:3bfb8868:12c91bef422:-8000-000000000000002f> <1290936427508> <BEA-000378> <Server failed to shutdown within the configured timeout of 30 seconds. The server process will exit now.>
i searched the net and it seems that i should increase the java heap size , how can i do that... I have a server with 4G Ram ..
Regards,
Lama
Edited by: Delta on Nov 28, 2010 1:36 AM

My frien google tells me that you use
>
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
This can have two reasons:
* Your Java application has a memory leak. There are tools like YourKit Java Profiler that help you to identify such leaks.
* Your Java application really needs a lot of memory (more than 128 MB by default!). In this case the Java heap size can be increased using the following runtime parameters:
java -Xms<initial heap size> -Xmx<maximum heap size>
>
Timo

OutOfMemoryError: Java heap space error when exporting more than 65MB file

Hi all,
My requirement is to export 65Mb file in a CSV format.There is no possibility for me to increase the heap size.
But ,I get the following error which is below the code while doing an export.
Whole 65mb ,I am putting into the response stream.I am not sure whether this is allowed or not.If not,please tell me the alternatives.
ServletOutputStream out = null;
final FacesContext faces = FacesContext.getCurrentInstance();
final HttpServletResponse response = (HttpServletResponse) faces
.getExternalContext().getResponse();
response.setContentType( "application/download" );
response.setHeader( ...................);
final byte[] byteArray = eachLine.toString().getBytes();
response.setContentLength( byteArray.length );
out.write(byteArray);
java.lang.OutOfMemoryError: Java heap space
at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:95)
at org.apache.myfaces.webapp.filter.ExtensionsResponseWrapper$MyServletOutputStream.write(ExtensionsResponseWrapper.java:138)
at org.ajax4jsf.io.FastBufferOutputStream.writeTo(FastBufferOutputStream.java:151)
at org.ajax4jsf.framework.ajax.xmlfilter.FilterServletResponseWrapper.sendContent(FilterServletResponseWrapper.java:469)
at org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:193)
at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:220)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:100)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:147)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
Edited by: Neelims on Apr 4, 2009 3:48 AM
Edited by: Neelims on Apr 4, 2009 3:51 AM

Hi
final byte[] byteArray = eachLine.toString().getBytes();
response.setContentLength( byteArray.length );
out.write(byteArray);
I assume eachLine is an object that holds the 100MB file contents, just release the memory held by this object before you start the writing part as shown below
final byte[] byteArray = eachLine.toString().getBytes();
eachLine=null;//removed the reference holding the memory
System.gc()//if JVM is in a good mood may be it will release some memory
response.setContentLength( byteArray.length );
out.write(byteArray);
before throwing out of memeory JVM may try to run the garbage collecter as you have initialised your object it might free up some memory

Getting OutofMemoryError: Java heap space - expected best solution

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