Out of Bounds Memory Exception in Open JMS

Hi Friends,
I am currently using Open JMS version openjms-0.7.6.1 for a Java Swing based application for communication. But I got a memory out of bounds exception if I start the open JMS server for a long period of time and need to restart the open JMS server again. I tried increasing the Memory allocated in Open JMS configuration file but of no use( Only a few minutes more added to raised the exception)
I have heard of Java Service Wrapper and can use it in the Open JMS server. Can any one help me out or provide me a solution or any link?Is Java Service Wrapper really helpful?If yes, how(Please post some code or an example)? I like to mention that if I go for JSW , I want it to work for both windows as well as Unix or Linux.
Thanks in advance...

java.lang.StringIndexOutOfBoundsException: String index out of range: 6
     at java.lang.String.substring(Unknown Source)
     at ImportOSTableModel.initVectors(ImportOSTableModel.java:49)
     at ImportOSTableModel.<init>(ImportOSTableModel.java:15)
     at ImportOSTable.<init>(ImportOSTable.java:19)
     at Main.main(Main.java:53)
It printed 3 rows of data, and then runs into a null string. Shouldn't it just exit out of the while loop before hitting the exception? In any case, I'll input a check so that the loop doesn't exit if there is only one row of data missing, since there are empty lines in the report.

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     at com.sap.ip.bi.webapplications.ui.framework.base.composites.UiRootContainer.iterateOverChildren(UiRootContainer.java:40)
     at com.sap.ip.bi.webapplications.ui.framework.base.impl.CompositeBuildUrTreeTrigger.process(CompositeBuildUrTreeTrigger.java:36)
     at com.sap.ip.bi.webapplications.ui.advancedcontrols.bridge.AcItemBridge.iterateOverChildren(AcItemBridge.java:63)
     at com.sap.ip.bi.webapplications.ui.framework.base.impl.CompositeBuildUrTreeTrigger.process(CompositeBuildUrTreeTrigger.java:36)
     at com.sap.ip.bi.webapplications.ui.unifiedrendering.controls.Group.iterateOverChildren(Group.java:63)
     at com.sap.ip.bi.webapplications.ui.framework.base.impl.CompositeBuildUrTreeTrigger.process(CompositeBuildUrTreeTrigger.java:36)
     at com.sap.ip.bi.webapplications.ui.container.group.control.AcGroupControl.iterateOverChildren(AcGroupControl.java:259)
     at com.sap.ip.bi.webapplications.ui.framework.base.impl.CompositeBuildUrTreeTrigger.process(CompositeBuildUrTreeTrigger.java:36)
     at com.sap.ip.bi.webapplications.ui.framework.base.composites.UiRootContainer.iterateOverChildren(UiRootContainer.java:40)
     at com.sap.ip.bi.webapplications.ui.framework.base.impl.CompositeBuildUrTreeTrigger.process(CompositeBuildUrTreeTrigger.java:36)
     at com.sap.ip.bi.webapplications.ui.framework.base.impl.CompositeBuildUrTreeTrigger.start(CompositeBuildUrTreeTrigger.java:59)
     at com.sap.ip.bi.webapplications.ui.framework.base.impl.ExtendedRenderManager.triggerComposites(ExtendedRenderManager.java:69)
     at com.sap.ip.bi.webapplications.ui.framework.base.impl.BICompositeManager.renderRoot(BICompositeManager.java:79)
     at com.sap.ip.bi.webapplications.ui.items.UiItem.render(UiItem.java:376)
Any help in solving this error is highly appreciated. Points will be given
Best Regards,
Vidyut K Samanta

Hi.
Go to line 9 of your code.
You are trying to use an array there.
Suppose you have an array x[4] - this array has 4 elements indexed 0..3.
you are trying to access an element with an index higher than 3.
Nimo.

Array out of bounds exception when outputting array to file

Could someone please tell me why i'm getting this array out of bounds exception?
public class Assignment1 {
public static void main(String[] names)throws IOException {
BufferedReader keyboard = null;
String userChoice;
String inputFile = null;
String studentData;
String searchFile = null;
String searchName;
String stringIn;
PrintWriter outputFile;
FileWriter fWriter = null;
BufferedReader fReader = null;
int first;
int last;
int mid;
int midValue;
int i;
int number;
// creates keyboard as a buffered input stream
keyboard = new BufferedReader(new InputStreamReader(System.in));
//prompts user to choose 1 or 2 to make a corresponding choice
System.out.println("Please Enter: ");
System.out.println("1 to Create a File: ");
System.out.println("2 to Search a File: ");
userChoice = keyboard.readLine(); //user enters 1 or 2
// converts a String into an int value
number = Integer.parseInt(userChoice);
fReader = new BufferedReader(new FileReader("studentData.txt"));
if (number == 1) {
System.out.println("Please Enter the File Name to Create: ");
studentData = keyboard.readLine();
File file = new File("studentData.txt");
fWriter = new FileWriter("studentData.txt");
outputFile = new PrintWriter(fWriter);
names = new String[200];
i=0;
//keep looping till sentinel
while (studentData != "end" && studentData != null &&
i < names.length) {
if (studentData.equals("end")) break; //break and call sort
System.out.println("Enter a name and press Enter. " +
"Type 'end' and press Enter when done: ");
studentData = keyboard.readLine();
//loop for putting the names into the array
for(i=0; i<names.length; i++) ;
outputFile.println(names);
} [b]outputFile.close();

package assignment1;
import java.io.*;
import java.util.*;
public class Assignment1 {
    public static void main(String[] names)throws IOException {
       BufferedReader keyboard = null;
       String userChoice;
       String inputFile = null;
       String studentData;
       String searchFile = null;
       String searchName;
       String stringIn;
       PrintWriter outputFile;
       FileWriter fWriter = null;
       BufferedReader fReader = null;
       int first;
       int last;
       int mid;
       int midValue;
       int i;
       int number;
       // creates keyboard as a buffered input stream
       keyboard = new BufferedReader(new InputStreamReader(System.in));
       //prompts user to choose 1 or 2 to make a corresponding choice
       System.out.println("Please Enter: ");
       System.out.println("1 to Create a File: ");
       System.out.println("2 to Search a File: ");
       userChoice = keyboard.readLine();    //user enters 1 or 2
       // converts a String into an int value
       number = Integer.parseInt(userChoice);
       fReader = new BufferedReader(new FileReader("studentData.txt"));
       if (number == 1) {
           System.out.println("Please Enter the File Name to Create: ");
           studentData = keyboard.readLine();
           File file = new File("studentData.txt");
           fWriter = new FileWriter("studentData.txt");
           outputFile = new PrintWriter(fWriter);
           names = new String[200];
           i=0;
            //keep looping till sentinel
            while (studentData.equals("end") && studentData != null &&
                   i < names.length) {
               if (studentData.equals("end")) break;   //break and call sort
               System.out.println("Enter a name and press Enter. " +
                                   "Type 'end' and press Enter when done: ");
                studentData = keyboard.readLine();
                //loop for putting the names into the array
                for(i=0; i<names.length; i++) ;
                outputFile.println(names);
} outputFile.close();
//call selectionSort() to order the array
     selectionSort(names);
     // Now output to a file.
fWriter = new FileWriter("studentData.txt");
outputFile = new PrintWriter(fWriter);
} else if (number == 2) {
System.out.println("Please Enter a File Name to search: ");
searchFile = keyboard.readLine();
inputFile = ("studentData.txt");
} if (searchFile == "studentData.txt") {
// Input from a file. See input file streams.
fReader = new BufferedReader(new FileReader("studentData.txt"));
System.out.println("Please enter a Name to search for: ");
searchName = keyboard.readLine();
//enter binary search code
first = 0;
last = 199;
while (first < last)
mid = (first + last)/2; // Compute mid point.
if (searchName.compareTo(names[mid]) < 0) {
last = mid; // repeat search in bottom half.
} else if (searchName.compareTo(names[mid]) > 0) {
first = mid + 1; // Repeat search in top half.
} else {
// Found it.
System.out.println("The Name IS in the file.");
} // did not find it.
System.out.println("The Name IS NOT in the file.");
} else //if userChoice != 1 or 2, re-prompt then start over
System.out.println("Please Enter 1 or 2 or correctly " +
"enter an existing file!!");
// fWriter = new FileWriter("studentdata.txt");
//outputFile = new PrintWriter(fWriter); //output
public static void selectionSort(String[] names) {
//use compareTo!!!!
int smallIndex;
int pass, j = 1, n = names.length;
String temp;
for (pass = 0; pass < n-1; pass++)
//Code for Do/While Loop
do {
//scan the sublist starting at index pass
smallIndex = pass;
//jtraverses sublist names[pass+1] to names[n-1]
for (j = pass+1; j < n; j++)
//if smaller string found, smallIndex=that position
if (names[j].compareTo(names[smallIndex]) < 0)
smallIndex = j;
temp = names[pass]; //swap
names[pass] =names[smallIndex];
names[smallIndex] = temp;
} while (j <= names.length);
//File file = new File("studentData.txt");
This is the output window:
init:
deps-jar:
compile:
run:
Please Enter:
1 to Create a File:
2 to Search a File:
1
Please Enter the File Name to Create:
test
Exception in thread "main" java.lang.NullPointerException
at assignment1.Assignment1.selectionSort(Assignment1.java:134)
at assignment1.Assignment1.main(Assignment1.java:73)
Java Result: 1
BUILD SUCCESSFUL (total time: 9 seconds)

Oracle BPM installed Java out-of-memory exception

Hi,
I have installed the oracle BPM software in the server have the Ram capacity 8 GB,Could you please suggest some of the do's and don't's to avoid the Java out-of-memory exception which normally appearing on the console of weblogic server.
My Server details,
Windows 2008 R2 64 bit, RAM 8 GB,
The required BPM s/w I installed from the link below,
http://www.oracle.com/technetwork/middleware/bpm/downloads/index.html?ssSourceSiteId=ocomen
Thanks in advance for your help.
Regards,
Shyam
Edited by: user13821489 on 06-Feb-2011 22:45

I had to increase JVM xmx/maxperm in the "set*Env.sh" scripts in the directory where you start WLS. In my dev environment, deploying BAM & BPM together with the Admin server, I finally allocated 4GB max. Jdev.conf is also better if you allocate > 1GB - mine is 1.4GB. I also watch process memory. Multiple re-deployments in my development environment seem to increase the memory, even if I remove process instances and undeploy first. I don't understand the internals very well so perhaps it is behaving correctly, but restarting WLS frees the unused memory that I expected gc to reclaim.

URLStream.readBytes always throw out of memory exception (errorID=1000)

When I try to load a file as 180MBytes by using URLStream.readBytes().
In some PCs, it's OK.
But in some PCs, there are always [out of memory] exception (errorID=1000) even such PC still had enough memory.
For example:
   Total memory is 2G, current used is 1.43G, but URLStream.readBytes() still throw such exception.
For file with little size such as 30M, there isn't such problem.
Could any body give some suggestion?
Best regards,
Sourcecode is very simple like:
var myStream:URLStream;
var inputBytes: ByteArray = new ByteArray();
... do load ...
// load by progressive event. I only deal progress load once, and ignore all later progressive load events.
// for example first 500KBytes was read.
myStream(inputBytes,inputBytes.length);
// load again when all datas is loaded completely. For example, 180MBytes should be read.
try {
    myStream(inputBytes,inputBytes.length);
} catch(e:*) {
    // warning log

When I try to load a file as 180MBytes by using URLStream.readBytes().
In some PCs, it's OK.
But in some PCs, there are always [out of memory] exception (errorID=1000) even such PC still had enough memory.
For example:
   Total memory is 2G, current used is 1.43G, but URLStream.readBytes() still throw such exception.
For file with little size such as 30M, there isn't such problem.
Could any body give some suggestion?
Best regards,
Sourcecode is very simple like:
var myStream:URLStream;
var inputBytes: ByteArray = new ByteArray();
... do load ...
// load by progressive event. I only deal progress load once, and ignore all later progressive load events.
// for example first 500KBytes was read.
myStream(inputBytes,inputBytes.length);
// load again when all datas is loaded completely. For example, 180MBytes should be read.
try {
    myStream(inputBytes,inputBytes.length);
} catch(e:*) {
    // warning log

Large Bitmaps create out of memory exception

Hello,
I try to generate a "BufferedImage" from a Windows Bitmap file ( xxxx.BMP ) .
I can read and generate relatively images from relatively small files (e.g. 852x626 pixels works fine),
but if it comes to larger images, I get an out of memory exception.
Has anybody an idea how to convince Java to read also large BMP image files.
If I create an awt "Image" even large images (eg 1200x5000 pixels are generated).
But unfortunately I have found no way to convert an "Image" to a "BufferedImage" and
only "BufferedImage" offers all the processing methods needed.
This is the code snippet I wrote:
------------ start of code snippet -----------------------------------------------------
try {
DataBufferInt dbBMPInt = new DataBufferInt(nwidth*nheight);
System.out.println("DataBufferInt = "+dbBMPInt);
int [] bitMasks = new int[3];
bitMasks[0] = (int)0xff<<16;
bitMasks[1] = (int)0xff<<8;
bitMasks[2] = (int)0xff;
SinglePixelPackedSampleModel spSM = new SinglePixelPackedSampleModel(DataBuffer.TYPE_INT,nwidth,nheight,bitMasks);
System.out.println("SinglePixelPackedSampleModel = "+spSM);
WritableRaster bmpRaster = WritableRaster.createWritableRaster((SampleModel) spSM, (DataBuffer) dbBMPInt, new Point(0,0));
System.out.println("WritableRaster = "+bmpRaster);
bmpImage = new BufferedImage(nwidth,nheight,BufferedImage.TYPE_3BYTE_BGR);
System.out.println("BufferedImage = "+bmpImage);
bmpImage.setData(bmpRaster);
catch (Exception exCrBm)
{ /* 001 start catch */
exCrBm.printStackTrace ();
} /* 001 end catch */
----------------------------------------------- end of code snippet --------------------
and this is the generated output.
File type is :BM
Size of file is :1600110
Size of bitmapinfoheader is :40
Width is :852
Height is :626
Planes is :1
BitCount is :24
Compression is :0
SizeImage is :1600056
DataBufferInt = java.awt.image.DataBufferInt@1774b9b
SinglePixelPackedSampleModel = java.awt.image.SinglePixelPackedSampleModel@8080b54
WritableRaster = IntegerInterleavedRaster: width = 852 height = 626 #Bands = 3 xOff = 0 yOff = 0 dataOffset[0] 0
BufferedImage = BufferedImage@b9e45a: type = 5 ColorModel: #pixelBits = 24 numComponents = 3 color space = java.awt.color.ICC_ColorSpace@3ef810 transparency = 1 has alpha = false isAlphaPre = false ByteInterleavedRaster: width = 852 height = 626 #numDataElements 3 dataOff[0] = 2
Any help appreciated
Regards
Wolfgang

Increase your maximum heap memory size.
Se -Xmx parameter of java.exe
Have a nice programming day,
Jos�.

Getting an Out of memory exception while validating XML against XSD

Hello friends,
I am getting an Out Of Memory exception while validating my XML against a given XSd which is huge.
SAXParserFactory saxParserFactory = SAXParserFactory.newInstance();
        saxParserFactory.setValidating(true);
          SAXParser saxParser = saxParserFactory.newSAXParser();
         saxParser.setProperty("http://java.sun.com/xml/jaxp/properties/schemaLanguage", "http://www.w3.org/2001/XMLSchema");
         saxParser.setProperty("http://java.sun.com/xml/jaxp/properties/schemaSource",new File("C:/todelxsd.xsd")); as u may see the darkened code. this basically Loads the XSD in Memmory , and JVM throws an out of Memory exception. is there any other way round of validating an XML against an XSD where i dont have to load my XSD if not then kindly let me know the solution for above problem .
Thanks.

Yes, but increasing the heap size is a temporary solution , isnt there a way where the XML can be validated against an XSD without having to load XSD in memory

Out of Bounds Memory Exception in Open JMS

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