Scale Image Memory Leak

There seems to be a memory leak in the Image.getScaledInstance(...) method when used in the following code:
if(scanImage.getWidth(this) > scanImage.getHeight(this))
scanImage = scanImage.getScaledInstance(300, -1, Image.SCALE_DEFAULT);
else
scanImage = scanImage.getScaledInstance(-1, 300, Image.SCALE_DEFAULT);
}Any ideas why its leaking, or another way of doing scaling?

hi
memory problems with this method seem to be common. here is another way of scaling images:
Iterator readers = ImageIO.getImageReadersByFormatName("gif");
ImageReader reader = (ImageReader)readers.next();
ImageInputStream iis = ImageIO.createImageInputStream(new File(path));
reader.setInput(iis, true);
ImageReadParam param = reader.getDefaultReadParam();
param.setSourceRenderSize(new Dimension(width, height));
BufferedImage thumbnail = reader.read(0, param);
this does not work for jpeg images and you need the sdk 1.4.2 in order to use ImageIO. previous versions do not have this framework.

Similar Messages

Image Memory Leaks in AIR app

We are implementing an AIR application that loads thumbnails
from the hard drive and uploads them to a remote server.
When bringing in large images, for example, when importing
five 2MB files into Image objects:
Flex reports that it is using 55MB
Windows reports using 220 Meg (viewing memory usage of
adl.exe in task manager)
After deletion of these image objects, the memory stays
allocated!! It is released when the application is closed.
Two issues I see:
1. Huge memory usage for image objects (I understand that JPG
files are exploded into BMPs). It limits our ability to load 10's
or 100's of images.
2. Bad Memory leak
OTHER THINGS WE TRIED:
1. Displaying images as inline html IMG tags.. Same memory
usage!
2. Taking a snapshot of the image and displaying that.
Problem, used way to much CPU
I hope these issues will be fixed before release time or we
are hosed.
PLATFORM: Windows XP Professional, service pack 2

Hi
Have you tried the FB3 profiler to investigate why memory is
not getting deallocated?
You can use the loitering objects panel to track the back
references for the objects in memory. If you find that image object
is not being referenced by anything else. Can you file a bug at
http://bugs.adobe.com/flex
with a small test case.
Also as you know that jpg will be translated into bitmap. The
amount of memory required will be determined by the pixels in the
image. Each pixel will be 4K
Thanks,
Gaurav Jain
Flex SDK Team

Applescript Image Events appears to have memory leak (or I don't know what I am doing)

Using Image Events to create images and thumbnails for a website. The following code results in very large memory leaks in Image Event process. I have documented results of test runs in the comments.
The leak (or poor coding on my part) results in a total system halt if I attempt to process more than about 400 images at a time. Basically, I run out ot physical memory. I am running a new model 13" MBP with 8GM RAM. I have to manually stop Image Events to reclaim the memory (or reboot of course).
Any help/suggestions would be appreciated.
(* test memory leak in Image Events *)
          tests with 58 photos selected in iPhoto
          5.7 MB left in Image Events after run with only open and close
          22.0 MB left in Image Events after run with open, save and close
          45.9 MB left in Image Events after run with open, scale, save and close
          A run with 382 photos selected used OVER 3.8 GB (gigabytes) and the
          mac ran out of physical memory so I had to stop the test.
tell application "Finder"
          set imageFolder to folder "test" of home as alias
end tell
tell application "iPhoto"
          set currPhotoList to the selection
          repeat with currPhoto in currPhotoList
                    log name of currPhoto as string
                    set theImagePath to image path of currPhoto
                    tell application "Image Events"
launch
                              set theImage to open theImagePath
scale theImage to size 128
save theImage in imageFolder as JPEG with icon
close theImage
                    end tell
          end repeat
end tell
--- end of code example

Does the following code do any difference? Most likely no I guess… but better try than nothing.
tell application "Finder"
    set imageFolder to folder "test" of home as text -- instead of “as alias” (see theTargetPath below)
end tell
set theImagePaths to {}
set theImagePathsRef to a reference to theImagePaths -- faster with big lists
tell application "iPhoto"
    set currPhotoList to the selection
    repeat with currPhoto in currPhotoList
        log name of currPhoto as string
        get POSIX file (image path of currPhoto) as alias -- faster ?
        copy result to the end of theImagePathsRef
    end repeat
end tell
tell application "Image Events"
    launch
    repeat with theImagePath in theImagePaths
        set theImage to open theImagePath
        scale theImage to size 128
        set theTargetPath to (imageFolder & name of theImagePath)
        save theImage in theTargetPath as JPEG with icon
        close theImage
    end repeat
end tell

Memory Leak in edited images?

I am using Captivate 4.0.1 Build 1658 (this means that the patch from May 2009 is applied) on Windows Vista.
The following has happened to myself and at least 2 other developers.
We edit a slide background image in Photoshop...when the movie plays, a flash of the previously unedited background shows. I have tried re-editing the background and it does not fix the problem. I have tried eliminating transistions and it does not fix the problem. I have noticed that this happens when background images are edited in Photoshop as well as within Captivate when bitmaps are pasted onto a slide background and then merged into the background.
I don't know if the correct term for this is a memory leak, but the closest mention of this problem I could find was here: http://blogs.adobe.com/captivate/2009/05/captvate_4_patch_update.html
I appreciate any help resolving this.
Thank you,
Beth

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#Click the "Reset Firefox" button.
#Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
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Did this fix your problems? Please report back to us!

Memory leak in image rings on Linux

Hello all,
I have a very serious problem I didn't have in previous version of my soft and one of the only addition I've made recently is to use image rings. The soft uses 6Mb more every minute. If I remove the rings, it stops. It could be a wrong lead, so I'm trying to write a test case, but is there a list of identified memory leaks somewhere ?
THanks.
Solved!
Go to Solution.

OK guys, there's a very serious leak on Linux, confirmed by the code below. Every time you change the value of a picture ring, either by clicking on the arrow of the picture ring or right-click on it (callback to SetCtrlVal), it uses 1 extra Mb of mem for a 512x512 pixel image !!!
Here's a sample code:
// Right-click the ring to cause memory leak
#include <stdio.h>
#include <stdlib.h>
#include <cvirte.h>
#include <userint.h>
#define RND_COLOR (((rand()<<16) ^ (rand()<<8) ^ rand()) & 0xFFFFFF)
// (int)((double)(0xFFFFFF)*rand()/RAND_MAX)
static int Pnl=0,
Text, Ring, // Controls
NbVals=16, // Number of images in the ring
Width=512, Height=512; // Of the Canvas and image ring
// Returns memory used by process in 4Kb page:
// TotalSize Resident Share Text Lib Data Dirty
// See "man proc" section statm
static char* ReadOffMemoryStatus(void) {
static char statm[80];
statm[0]='\0';
#ifdef _NI_linux_
FILE *f = fopen("/proc/self/statm","r");
if (f)
fgets (statm, 79, f),
fclose(f);
#endif
return statm;
static void Prepare(const int Nb) {
Point polyPoints[10]={{0,0}};
char Str[10];
int i, Bitmap;
int Canvas=NewCtrl(Pnl, CTRL_CANVAS, "", 0, 0);
SetCtrlAttribute(Pnl, Canvas, ATTR_DRAW_POLICY, VAL_UPDATE_IMMEDIATELY);
SetCtrlAttribute(Pnl, Canvas, ATTR_WIDTH, Width);
SetCtrlAttribute(Pnl, Canvas, ATTR_HEIGHT, Height);
// SetCtrlAttribute(Pnl, Canvas, ATTR_ENABLE_ANTI_ALIASING, 1); // No compile on Linux
SetCtrlAttribute(Pnl, Canvas, ATTR_PICT_BGCOLOR, RND_COLOR /*VAL_TRANSPARENT*/);
SetCtrlAttribute(Pnl, Canvas, ATTR_PEN_FILL_COLOR, RND_COLOR);
SetCtrlAttribute(Pnl, Canvas, ATTR_PEN_COLOR, RND_COLOR);
SetCtrlAttribute(Pnl, Canvas, ATTR_PEN_WIDTH, 7);
for (i=0; i<10; i++)
polyPoints[i].x=(Width*rand()/RAND_MAX),
polyPoints[i].y=(Height*rand()/RAND_MAX);
sprintf(Str, "%d", Nb);
// CanvasStartBatchDraw(Pnl, Canvas);
// This sometimes doesn't work on Linux
CanvasDrawPoly (Pnl, Canvas, 10, polyPoints, 1, VAL_DRAW_FRAME_AND_INTERIOR);
CanvasDrawLine (Pnl, Canvas, MakePoint(Width-1,0), MakePoint(0, Height-1));
SetCtrlAttribute(Pnl, Canvas, ATTR_PEN_COLOR, VAL_BLACK);
SetCtrlAttribute(Pnl, Canvas, ATTR_PEN_FILL_COLOR, VAL_WHITE);
CanvasDrawText(Pnl, Canvas, Str, VAL_APP_META_FONT,
MakeRect (2, 2, VAL_KEEP_SAME_SIZE, VAL_KEEP_SAME_SIZE), VAL_UPPER_LEFT);
// CanvasEndBatchDraw(Pnl, Canvas);
GetCtrlBitmap(Pnl, Canvas, 0, &Bitmap);
DiscardCtrl (Pnl, Canvas);
InsertListItem(Pnl, Ring, Nb, NULL, Nb); // The value is the color, so remember which one you use
SetCtrlBitmap (Pnl, Ring, Nb, Bitmap);
DiscardBitmap (Bitmap);
int CVICALLBACK cb_Change(int panel, int control, int event,
void *callbackData, int eventData1, int eventData2) {
static int i=0;
switch (event) {
case EVENT_RIGHT_CLICK:
case EVENT_RIGHT_DOUBLE_CLICK:
SetCtrlVal(Pnl, Ring, i=(i+1)%NbVals);
// No break;
case EVENT_COMMIT:
SetCtrlVal(Pnl, Text, ReadOffMemoryStatus());
break;
return 0;
int CVICALLBACK cb_Quit(int panel, int control, int event,
void *callbackData, int eventData1, int eventData2) {
switch (event) {
case EVENT_COMMIT: QuitUserInterface (0); break;
return 0;
int main (int argc, char *argv[]) {
int i, Quit;
if (InitCVIRTE (0, argv, 0) == 0) return -1;
Pnl = NewPanel (0, "Test image ring", 20, 20, Height+20, Width);
Text = NewCtrl (Pnl, CTRL_STRING_LS, "Memory use (in 4Kb pages)", 0, 0);
Ring = NewCtrl (Pnl, CTRL_PICTURE_RING, "", 20, 0);
Quit = NewCtrl (Pnl, CTRL_SQUARE_BUTTON_LS, "", 50, 50);
SetCtrlAttribute(Pnl, Ring, ATTR_HEIGHT, Height);
SetCtrlAttribute(Pnl, Ring, ATTR_WIDTH, Width);
SetCtrlAttribute (Pnl, Ring, ATTR_CTRL_MODE, VAL_HOT);
SetCtrlAttribute(Pnl, Ring, ATTR_CALLBACK_FUNCTION_POINTER, cb_Change);
for (i=0; i<NbVals; i++) Prepare(i);
SetCtrlAttribute(Pnl, Text, ATTR_WIDTH, 250);
SetCtrlAttribute(Pnl, Text, ATTR_LABEL_LEFT, 250);
SetCtrlAttribute(Pnl, Text, ATTR_LABEL_TOP, 0);
SetCtrlAttribute(Pnl, Quit, ATTR_CALLBACK_FUNCTION_POINTER, cb_Quit);
SetCtrlAttribute(Pnl, Quit, ATTR_VISIBLE, 0);
SetCtrlAttribute(Pnl, Quit, ATTR_SHORTCUT_KEY, VAL_ESC_VKEY);
SetPanelAttribute(Pnl, ATTR_CLOSE_CTRL, Quit);
DisplayPanel (Pnl);
RunUserInterface ();
return 0;
There are other issues as well:
- CanvasDrawPoly sometimes doesn't work.
- The anti-aliasing on a canvas doesn't compile.
Is there anything more recent than CVI 2010 for Linux ?!?

Loading External Images Causes Memory Leak

I have been working on an Actionscript 2.0 project that basically loads external images.
Everytime i load and unload a new image, memory increases to 1 or 2 MBs
If all the images are in cache, then it increased to 4 or 8 KBs
In the unloading of images, I have removed loader and the container of the image.
Any thoughts why it is behaving like that?
Please find the sample code snippet below.
btn_load.onRelease = function()
loadImage();
btn_unLoad.onRelease = function()
unLoadImage();
var mcListener:Object = new Object();
var container1:MovieClip;
var mcLoader:MovieClipLoader;
var loader_reference = this;
var n=0;
function loadImage(){
var image_arr = ["http://xyz.com/image1.png","http://xyz.com/image2.png","http://xyz.com/image3.png","http:/ /xyz.com/image4.png","http://xyz.com/image5.png"];
var image_url = image_arr[n];
if(n==image_arr.length-1) {
n=0;
}else{
n++;
container1 = loader_reference.createEmptyMovieClip("container1", loader_reference.getNextHighestDepth());
mcLoader = new MovieClipLoader();
mcLoader.removeListener(mcListener);
mcLoader.addListener(mcListener);
mcListener.onLoadComplete = function(target_mc:MovieClip, httpStatus:Number):Void {
mcListener.onLoadInit = function(target_mc:MovieClip):Void {
target_mc._x = 300;
target_mc._y = 200;
target_mc._width = 300;
target_mc._height = 250;
mcLoader.loadClip(image_url, container1);
function unLoadImage(){
mcLoader.unloadClip(container1);
mcLoader = null;
container1 = null;
removeMovieClip(loader_reference.container1);
Thanks in advance.

that code should only execute once. fix that.

Memory leak in Tomcat 5.5

Hi all, i am experiencing memory leaks while using tomcat 5.5 and mysql connector 3.1.7.. While running the attached code tomcat swallows up to 20 mb and doesnt return it. I close down everything but the app still leaks mem. For now it's not an issue (Tomcat stays below 60mb mem of 1gb), however running this app on serveral clients will dramatically increase the memory allocation.
import java.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.awt.Image;
import java.awt.Graphics2D;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import javax.swing.ImageIcon;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageEncoder;
public class Thumbs extends HttpServlet {
private String dbDriver = "com.mysql.jdbc.Driver";
private String dbURL = "jdbc:mysql://localhost/webapp?";
private String userID = "javauser";
private String passwd = "javadude";
private Connection dbConnection;
//Initialize global variables
public void init() throws ServletException {
//Process the HTTP Get request
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    try{
       String maxDim = "";
       String siteString = request.getParameterValues("s")[0];
       if (request.getParameterValues("d") != null){
           maxDim = request.getParameterValues("d")[0];
       if (maxDim == ""){
           response.setContentType("image/jpeg");
           OutputStream out = response.getOutputStream();
           writePicture(out,siteString);
       else{
           if (siteString != null) {
               int maxDimension = Integer.parseInt(maxDim);
               response.setContentType("image/jpeg");
               OutputStream out = response.getOutputStream();
               writeThumbnailPicture(out, siteString, maxDimension);
    } catch (Exception ex){
        ex.printStackTrace();
        log(ex.getMessage());
public void writePicture(OutputStream out, String siteID){
      try{
          Class.forName(dbDriver);
          dbConnection = DriverManager.getConnection(dbURL, userID, passwd);
          PreparedStatement stmt = dbConnection.prepareStatement("select * from webcatalog where ID = ?");
          stmt.setString(1,siteID);
          stmt.executeQuery();
          ResultSet rs = stmt.getResultSet();
          if (rs.next()) {
              byte[] data = rs.getBytes("Picture");
              if (data != null) {
                  Image inImage = new ImageIcon(data).getImage();
                  BufferedImage outImage = new BufferedImage(inImage.getWidth(null),
                                                             inImage.getHeight(null),
                                                             BufferedImage.TYPE_INT_RGB);
                  // Paint image.
                  Graphics2D g2d = outImage.createGraphics();
                  g2d.drawImage(inImage,null,null);
                  // JPEG-encode the image
                  JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
                  encoder.encode(outImage);
                  out.close();
          rs.close();
          stmt.close();
          dbConnection.close();
      }catch(Exception ex){
          ex.printStackTrace();
public void writeThumbnailPicture(OutputStream out,String siteID,int maxDimension){
    try{
      Class.forName(dbDriver);
      dbConnection = DriverManager.getConnection(dbURL, userID, passwd);
      PreparedStatement stmt = dbConnection.prepareStatement("select * from webcatalog where ID = ?");
      stmt.setString(1,siteID);
      stmt.executeQuery();
      ResultSet rs = stmt.getResultSet();
      if (rs.next()) {
        byte[] data = rs.getBytes("Picture");
        if (data != null) {
          Image inImage = new ImageIcon(data).getImage();
          // Determine the scale.
           double scale = (double)maxDimension / (double)inImage.getHeight(null);
           if (inImage.getWidth(null) > inImage.getHeight(null)) {
               scale = (double)maxDimension /(double)inImage.getWidth(null);
           // Determine size of new image.
           // One of them should equal maxDim.
           int scaledW = (int)(scale*inImage.getWidth(null));
           int scaledH = (int)(scale*inImage.getHeight(null));
           // Create an image buffer in
           //which to paint on.
           BufferedImage outImage = new BufferedImage(scaledW, scaledH,
               BufferedImage.TYPE_INT_RGB);
           // Set the scale.
           AffineTransform tx = new AffineTransform();
           // If the image is smaller than
           // the desired image size,
           // don't bother scaling.
           if (scale < 1.0d) {
               tx.scale(scale, scale);
           // Paint image.
           Graphics2D g2d = outImage.createGraphics();
           g2d.drawImage(inImage, tx, null);
           g2d.dispose();
           // JPEG-encode the image
           JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
           encoder.encode(outImage);
           out.close();
      rs.close();
      stmt.close();
      dbConnection.close();
    catch(Exception ex){
      ex.printStackTrace();
//Clean up resources
public void destroy() {
private void jbInit() throws Exception {
}

you can try this:
open your connection outside the function, and then pass it like as a parameter...
writePicture(OutputStream out, String siteID, Connection conn)
this can solve the problem because opening the connection inside the function spends a lot of memory...
Hope this can help you
Regards
Fernando

Memory leak - Node clean up?

Hey guys,
I'm running into a memory leak and was reading some other threads where people were having their own memory leaks. Is there a way through NetBeans to track memory usage or something to figure out what is consuming memory? My memory leak sounds similar to this gentleman's: [http://forums.sun.com/thread.jspa?threadID=5409788] and [http://forums.sun.com/thread.jspa?threadID=5357401]
Setup:
I have a mySQL database call that returns a bunch of results and in the end converts each record into its own custom node which then gets put into a sequence, which is then given to a listEventsNode (a custom node VBox) and finally put on the stage. As a note each custom node has its own animations, events, images, and shapes.
listEventsNode gets its list of custom nodes from a publicly accessible sequence variable where its contents is simply cleared and new nodes are added by the next MySQL search. I cleared the eventSequence by using delete myCustomNodeSequence.
I even go as far as setting the same sequence null (myCustomNodeSequence = null;). This unfortunately doesn't make any difference in terms of memory usage. java.exe will reach 100MB then crash.
the listEventsNode is bound with eventSequence, this is to ensure that changes to the sequence of custom nodes are immediately reflected in the Vbox (listEventsNode).
ListEventsNode is on the main stage and there is only one instance of it, but what changes is the content in the eventSequence. Even if I clear the contents of the eventSequence, it doesn't appear to "clean up" the memory.
The way I'm doing it is probably breaking every rule in the book. I should probably make it so listEventsNode is its own object which isn't bound to any external variables (such as eventSequence) and in the event a new search takes place I simply delete the listEventsNode and when a new search is complete, it re-adds the node to the scene. Am I on the right track here?
Is there a good "best practices" for JavaFX? For example, a typical mistake that would cause a node to "recreate" itself over and over again in memory when the programmer may have thought it was simply being "written over"? Does this make sense? Because I have a feeling that my application is not deleting the custom nodes that were created for the eventSequence and even if the eventSequence is "deleted" and re-assigned with new custom nodes, the original or previous custom nodes are still residing in memory.
Let me know if you need to see the source or any logs/readouts from NetBeans during execution if this will help.
Thanks for taking the time to read this.
Cheers,
Nik.

Your heap usage looks pretty typical. In scenario 5, I think you are simply running out of memory. I doubt its a leak inside the javafx runtime (although it could be).+
I think you might be right. It's running out of memory and I may have to increase the heap size.
Say that my application legitimately needs more memory to operate, and I need to increase the heap size. How does this work if you have a fully deployed application? Is the heap size information built into the application itself so that when the jvm runs the application, it allocates the appropriate amount of memory? I've increased the heap size from 64mb to 128mb, and I added many many nodes and I still crapped out when I hit the 128mb ceiling. I changed it to 512 and I added a TON of nodes (when you click a node from the VBox, it adds a miniature version of the node to the scene graph) and I'm just under 200MB. I plan on setting a cap to how many concurrent additional nodes can be placed on the scene graph, which will help.
If you deploy this as is, how does the application utilize memory if you've adjusted the heap size? Or is this specific to the IDE only?
Do you know what objects are on the heap? Can you compare what objects are on the heap from one scenario to the next?+
Where can I find this information in NetBeans profiler?
Do you have a lot of images? Are they thumbnails or are they images scaled down to thumbnail size?+
Actually, yes I am using a scaled down thumbnail size of the original image. The original image files are PNG format, 60x60 pixels, and about 8kb in size. I simply use the "FitWidth:" property to scale the image down. I was doing some more reading before I went to bed and I was going to use an alternative way to scale the image down. By simply doing this, the initial heap usage off the 500 node search went down form 44MB to 39MB. It's still slower on consecutive searches versus the first, but it's stable.
Edit: I've used the width: property to downsize the image and it looks like I'm not running into that heap crash as fast but this poses a problem where I need to have the full size of the image available when a custom node is selected. What's the best way of doing this? I should probably store the image location in a string and recreate the image when I need it in full size since there is only one full size version of it on the screen at a given time. I've also completely disabled the addition of a picture in my custom node; it appears these images don't take up a lot of space since they are very small. I save an additional 3-5MB in heap space if I completely disable the pictures and have just the nodes themselves. Each node has animation effects (i.e. fading in/out of colors, changing of color if selected). Although the class itself is pretty dang long in comparison with any other classes I have.
Are you clearing the nodes from your scene content before the search or after? If after, are you creating the new nodes before clearing out the old?+
Yes, I have a function that reassigns the stage.scene.content sequence omitting the custom vbox that houses the list of custom nodes prior to the next search. The "cleanUp()" function is called prior to the insertion of the new custom vbox.
It might be useful to turn on verbose garbage collection (-verbose:gc on the java command line) just to see what's happening in gc.+
What is this exactly? I tried putting in System.gc() but I'm not sure if I'm seeing any difference yet.
Edit: Actually, I've placed System.gc() after I run my cleanUp() function and I'm noticing the heap usage is more conservative. Seems to clear more often than it did before. But yes, the underlying problem of my running out of memory is to be looked at.
You might also (just as an experiment) force garbage collection between your searches.+
This seems to work well with smaller result sets. However, a search that produces over 500 custom nodes in a custom VBox uses more than half of the available heap size, so the next time it tries to do the same search it just crashes like you mentioned in your first point. The memory simply runs out. What I don't get is if I "delete" the custom vbox prior to inserting it, the memory doesn't seem to be released immediately. From what I'm reading about the garbage collector, it doesn't exactly do things in a prompt fashion.

Memory leak in IMAQ Write PNG File

Hi,
I have a labview program that I'm using to do Speckle Patter Interferometry - it takes an image, takes a second image after some time, then subtracts the original image from the first and saves the subtraction. The process reveals fringes on an object deformed on wavelength scales.
The problem currently is that the program seems to have a memory leak. When I run the program, the amount of memory being used (according to Windows Task Manager) just keeps going up and up then after about 20 minutes, it crashes with the error:
Error 1074396159
Not enough memory for required operation
The error is normally when the file tries to write the png file - though that is the part of the program that takes the most time so it could just be coincidence that it happens at this point in the loop.
I've tried using the labview profiler (output attached), but can't see a particular VI that is using an abhorrent amount of memory.
I'm fairly stuck for ideas - I've attached a library with the VI and its sub VIs - if anyone would be so kind as to give me a hand I'd be very much appreciative. I realise that my code is quiet messy - this is my first attempt at labview (albeit quite a long way into my first attempt) so any suggestions would be much appreciated also.
Thanks
Sam
Attachments:
ESPI.llb ‏556 KB
memory_profile.txt ‏237 KB

Hi Sam,
I'm glad to hear that you managed to fix the problem in your code. I have had a look at the code you posted and I have a few suggestions on how you can improve it.
In your code you haven't included the error clusters from the VIs. Most sub VI functions included in LabVIEW will have an Error In and Error Out port that will transfer any error information through the VI. If an error does occur in the code, the error will be passed through the rest of the VI. If a sub VI or function receives an error at its error in port the VI will not execute and the error will pass through until it reaches the end of the VI. At the end of a the VI there needs to be an Error Handler function to display the error information. As error information flows through the VI the same as the data, using error clusters is a good way to determine the flow of data through a VI. This is a good way to determine the data flow through the VI as opposed to Sequence Structures which should be used in moderation.
I have taken a segment of you code and made some minor modifications to demonstrate how error clusters can be used (see screenshot below).
Error clusters can be implemented into any logic for the stop condition of a while loop. The Unbundle by Name using the Status option can be used in conjunction with the error cluster to produce a boolean output depending on if an error has occurred. If an error does occur, the function will produce a true and if an error does not occur it will produce a false. The error cluster can also be expanded by hovering the mouse over the top or bottom of the function and dragging the grey box up or down. This is useful for when you want to produce multiple outputs from the same data, such as the histogram data in your VI.
Another thing I noticed in you code was some redundant logic. You had set the Stop button default on your front panel to true, which meant that an inverter had to be used to stop the first while loop and the stop condition in the last while loop had been changed to Continue if True. If you had kept the stop button default to False and the stop condition of the last while loop to Stop if True, the inverter on the first while loop would not be needed. This however is only a small issue but its something you could keep in mind when writing other code.
Hopefully these suggestions will help you to further develop you LabVIEW code. I understand that implementing these suggestions into you current code could be an issue due to the size of it, but they are good features to consider when developing any code in the future.
If there is anything you are unsure of please do not hesitate to post any questions. I will be more than happy to assist you.
Kind Regards
Jason W.
Applications Engineer
National Instruments UK & Ireland

3d picture texture memory leak?

I'm further investigating using the 3D picture controla nd have found out a couple of really cool things.
1. Object instantiation : You can add lots of copies of objects to a scene which allows them to share much data (The "Drawable" item is shared) but allows applying individual scaling, transformation, texturing and so on. This saves a HUGE amount of memory when instantiating lots of objects.
2. Viewports: You can define several different viewports for a 3D picture which allows limiting the display of an object to a certain portion of the 3D picture.
3. "WindowtoObjectCoords" allows for an easy method to "pin" an object at a specific point on the 3D picture display. Coupled with a Viewport, we can implement a nice rotating 3D coordinate display which doesn't pan or scale with the rest of the picture.
I then got greedy. I wanted to start instantiating several thousand primitives, but applying a different texture to each to give a multicoloured effect. This works fine but whenever I run the program, I get a memory leak and I can't figure out how to get rid of this. Following image has 8192 instances of a single box with different textures, rotations and translations applied to each.
If anyone could have a look to see what I'm actually doing wrong, that would be greatly appreciated. The solar system example doesn't seem to suffer from this problem, but it doesn't use multiple instantiation of objects.....
I've had this problem before. I feel it's related to texturing but I'm not sure. Maybe the memory leak is only noticeable when texturing is used due to the much larger memory footprint.
Shane.
Say hello to my little friend.
RFC 2323 FHE-Compliant
Attachments:
3D texture memory leak.zip ‏66 KB

Ok, last post, I promise.
When freeing up memory used for a 3D picture like this, using a recursive method needs to take care to obtain a reference to each object's "Drawable" and "Texture" before removing the texture and ultimately destroying the object. Then the Drawable and the Texture need to be destroyed also (close Reference). Done properly it seems to be do-able. This is because the "Drawable" and "Texture" are pointers to other data structures which are not freed up by destroying the object using them. They need to be destroyed individually.
So I think I have a working version. I can instantiate over 65000 objects, each with their own texture, rotation and translation and I can release them after execution with a "wobble" in the LabVIEW.exe idle memory of about 2MB. That is to say, it increases the first few times and then stays pretty much stable. The memory usage goes up more than 200MB when running.
Shane.
Say hello to my little friend.
RFC 2323 FHE-Compliant

How can I address a memory leak problem with Firefox?

I have happily used Firefox for the past 7 years, and have rarely had difficulties. However, I am having some trouble now; Firefox (running 3.6.6) seems to have a memory leak on my machine. It's slower than what was discussed in other forum posts, but it still scales up slowly to multiple hundred MBs of Memory with very little CPU usage.
I have tried disabling add-ons and extensions, but this does not stop the problem. I have cleared my cache and other stored data, but that also does not help. Has anyone experienced a similar problem that might be able to help?
== This happened ==
Every time Firefox opened
== within last two weeks

Hi reble0708,
I have Java console disabled on my Firefox browser.Everything is working fine for me. There maybe other problem on your browser which is making PDF document faded and blurry. Can you post the link where you found the problem viewing the PDF document?
Btw, you can go to ftp://ftp.mozilla.org/pub/firefox/releases/ and select the previous version of Firefox from the given options. There's no need to uninstall Firefox before you downgrade to the previous version of it.But before new installation, backup your Firefox profile folder.
edit: replaced random unofficial download site link.

Pro*c multithreaded application has memory leak

Hi there,
I posted this message a week ago in OCI section, nobody answer me.
I am really curious if my application has a bug or the pro*c has a bug.
Anyone can compile the sample code and test it easily.
I made multithreaded application which queries dynamic SQL, it works.
But the memory leaks when i query the SQL statement.
The more memory leaks, the more i query the SQL statement, even same SQL
statement.
I check it with top, shell command.
My machine is SUN E450, Solaris 8. Oracle 9.2.0.1
Compiler : gcc (GCC) 3.2.2
I changed source code which is from
$(ORACLE_HOME)/precomp/demo/proc/sample10.pc
the sample10 doesn't need to be multithreaded. But i think it has to work
correctly if i changed it to multithreaded application.
the make file and source code will be placed below.
I have to figure out the problem.
Please help
Thanks in advance,
the make file is below
HOME = /user/jkku
ORA = $(ORACLE_HOME)
CC = gcc
PROC = proc
LC_INCL = -I$(HOME)/work/dbmss/libs/include
lc_incl = include=$(HOME)/work/dbmss/libs/include
SYS_INCL =
sys_incl =
ORA_INCL = -I. \
-I$(ORA)/precomp/public \
-I$(ORA)/rdbms/public \
-I$(ORA)/rdbms/demo \
-I$(ORA)/rdbms/pbsql/public \
-I$(ORA)/network/public \
-DSLMXMX_ENABLE -DSLTS_ENABLE -D_SVID_GETTOD
INCLUDES = $(LC_INCL) $(SYS_INCL) $(ORA_INCL)
includes = $(lc_incl) $(sys_incl)
LC_LIBS =
SYS_LIBS = -lpthread -lsocket -lnsl -lrt
ORA_LIBS = -L$(ORA)/lib/ -lclntsh
LIBS = $(LC_LIBS) $(SYS_LIBS) $(ORA_LIBS)
# Define C Compiler flags
CFLAGS += -D_Solaris64_ -m64
CFLAGS += -g -D_REENTRANT
# Define pro*c Compiler flags
PROCFLAGS += THREADS=YES
PROCFLAGS += CPOOL=YES
# Our object files
PRECOMPS = sample10.c
OBJS = sample10.o
.SUFFIXES: .o .c .pc
.c.o:
$(CC) -c $(CFLAGS) $(INCLUDES) $*.c
.pc.c:
$(PROC) $(PROCFLAGS) $(includes) $*.pc $*.c
all: sample10
sample10: $(PRECOMPS) $(OBJS)
$(CC) $(CFLAGS) -o sample10 $(OBJS) $(LIBS)
clean:
rm -rf *.o sample10 sample10.c
the source code is below which i changed the oracle sample10.pc to
multithreaded application.
Sample Program 10: Dynamic SQL Method 4
This program connects you to ORACLE using your username and
password, then prompts you for a SQL statement. You can enter
any legal SQL statement. Use regular SQL syntax, not embedded SQL.
Your statement will be processed. If it is a query, the rows
fetched are displayed.
You can enter multi-line statements. The limit is 1023 characters.
This sample program only processes up to MAX_ITEMS bind variables and
MAX_ITEMS select-list items. MAX_ITEMS is #defined to be 40.
#include <stdio.h>
#include <string.h>
#include <setjmp.h>
#include <sqlda.h>
#include <stdlib.h>
#include <sqlcpr.h>
/* Maximum number of select-list items or bind variables. */
#define MAX_ITEMS 40
/* Maximum lengths of the names of the
select-list items or indicator variables. */
#define MAX_VNAME_LEN 30
#define MAX_INAME_LEN 30
#ifndef NULL
#define NULL 0
#endif
/* Prototypes */
#if defined(__STDC__)
void sql_error(void);
int oracle_connect(void);
int alloc_descriptors(int, int, int);
int get_dyn_statement(void);
void set_bind_variables(void);
void process_select_list(void);
void help(void);
#else
void sql_error(/*_ void _*/);
int oracle_connect(/*_ void _*/);
int alloc_descriptors(/*_ int, int, int _*/);
int get_dyn_statement(/* void _*/);
void set_bind_variables(/*_ void -*/);
void process_select_list(/*_ void _*/);
void help(/*_ void _*/);
#endif
char *dml_commands[] = {"SELECT", "select", "INSERT", "insert",
"UPDATE", "update", "DELETE", "delete"};
EXEC SQL INCLUDE sqlda;
EXEC SQL INCLUDE sqlca;
EXEC SQL BEGIN DECLARE SECTION;
char dyn_statement[1024];
EXEC SQL VAR dyn_statement IS STRING(1024);
EXEC SQL END DECLARE SECTION;
EXEC ORACLE OPTION (ORACA=YES);
EXEC ORACLE OPTION (RELEASE_CURSOR=YES);
SQLDA *bind_dp;
SQLDA *select_dp;
/* Define a buffer to hold longjmp state info. */
jmp_buf jmp_continue;
char *db_uid="dbmuser/dbmuser@dbmdb";
sql_context ctx;
int err_sql;
enum{
SQL_SUCC=0,
SQL_ERR,
SQL_NOTFOUND,
SQL_UNIQUE,
SQL_DISCONNECT,
SQL_NOTNULL
int main()
int i;
EXEC SQL ENABLE THREADS;
EXEC SQL WHENEVER SQLERROR DO sql_error();
EXEC SQL WHENEVER NOT FOUND DO sql_not_found();
/* Connect to the database. */
if (connect_database() < 0)
exit(1);
EXEC SQL CONTEXT USE :ctx;
/* Process SQL statements. */
for (;;)
/* Allocate memory for the select and bind descriptors. */
if (alloc_descriptors(MAX_ITEMS, MAX_VNAME_LEN, NAME_LEN) != 0)
exit(1);
(void) setjmp(jmp_continue);
/* Get the statement. Break on "exit". */
if (get_dyn_statement() != 0)
break;
EXEC SQL PREPARE S FROM :dyn_statement;
EXEC SQL DECLARE C CURSOR FOR S;
/* Set the bind variables for any placeholders in the
SQL statement. */
set_bind_variables();
/* Open the cursor and execute the statement.
* If the statement is not a query (SELECT), the
* statement processing is completed after the
* OPEN.
EXEC SQL OPEN C USING DESCRIPTOR bind_dp;
/* Call the function that processes the select-list.
* If the statement is not a query, this function
* just returns, doing nothing.
process_select_list();
/* Tell user how many rows processed. */
for (i = 0; i < 8; i++)
if (strncmp(dyn_statement, dml_commands, 6) == 0)
printf("\n\n%d row%c processed.\n", sqlca.sqlerrd[2], sqlca.sqlerrd[2] == 1 ? '\0' : 's');
break;
/* Close the cursor. */
EXEC SQL CLOSE C;
/* When done, free the memory allocated for pointers in the bind and
select descriptors. */
for (i = 0; i < MAX_ITEMS; i++)
if (bind_dp->V != (char *) 0)
free(bind_dp->V);
free(bind_dp->I); /* MAX_ITEMS were allocated. */
if (select_dp->V != (char *) 0)
free(select_dp->V);
free(select_dp->I); /* MAX_ITEMS were allocated. */
/* Free space used by the descriptors themselves. */
SQLSQLDAFree(ctx, bind_dp);
SQLSQLDAFree(ctx, select_dp);
} /* end of for(;;) statement-processing loop */
disconnect_database();
EXEC SQL WHENEVER SQLERROR CONTINUE;
EXEC SQL COMMIT WORK RELEASE;
puts("\nHave a good day!\n");
return;
* Allocate the BIND and SELECT descriptors using sqlald().
* Also allocate the pointers to indicator variables
* in each descriptor. The pointers to the actual bind
* variables and the select-list items are realloc'ed in
* the set_bind_variables() or process_select_list()
* routines. This routine allocates 1 byte for select_dp->V
* and bind_dp->V, so the realloc will work correctly.
alloc_descriptors(size, max_vname_len, max_iname_len)
int size;
int max_vname_len;
int max_iname_len;
int i;
* The first sqlald parameter determines the maximum number of
* array elements in each variable in the descriptor. In
* other words, it determines the maximum number of bind
* variables or select-list items in the SQL statement.
* The second parameter determines the maximum length of
* strings used to hold the names of select-list items
* or placeholders. The maximum length of column
* names in ORACLE is 30, but you can allocate more or less
* as needed.
* The third parameter determines the maximum length of
* strings used to hold the names of any indicator
* variables. To follow ORACLE standards, the maximum
* length of these should be 30. But, you can allocate
* more or less as needed.
if ((bind_dp =
SQLSQLDAAlloc(ctx, size, max_vname_len, max_iname_len)) ==
(SQLDA *) 0)
fprintf(stderr,
"Cannot allocate memory for bind descriptor.");
return -1; /* Have to exit in this case. */
if ((select_dp =
SQLSQLDAAlloc(ctx, size, max_vname_len, max_iname_len)) == (SQLDA *)
0)
fprintf(stderr,
"Cannot allocate memory for select descriptor.");
return -1;
select_dp->N = MAX_ITEMS;
/* Allocate the pointers to the indicator variables, and the
actual data. */
for (i = 0; i < MAX_ITEMS; i++) {
bind_dp->I = (short *) malloc(sizeof (short));
select_dp->I = (short *) malloc(sizeof(short));
bind_dp->V = (char *) malloc(1);
select_dp->V = (char *) malloc(1);
return 0;
int get_dyn_statement()
char *cp, linebuf[256];
int iter, plsql;
for (plsql = 0, iter = 1; ;)
if (iter == 1)
printf("\nSQL> ");
dyn_statement[0] = '\0';
fgets(linebuf, sizeof linebuf, stdin);
cp = strrchr(linebuf, '\n');
if (cp && cp != linebuf)
*cp = ' ';
else if (cp == linebuf)
continue;
if ((strncmp(linebuf, "EXIT", 4) == 0) ||
(strncmp(linebuf, "exit", 4) == 0))
return -1;
else if (linebuf[0] == '?' ||
(strncmp(linebuf, "HELP", 4) == 0) ||
(strncmp(linebuf, "help", 4) == 0))
help();
iter = 1;
continue;
if (strstr(linebuf, "BEGIN") ||
(strstr(linebuf, "begin")))
plsql = 1;
strcat(dyn_statement, linebuf);
if ((plsql && (cp = strrchr(dyn_statement, '/'))) ||
(!plsql && (cp = strrchr(dyn_statement, ';'))))
*cp = '\0';
break;
else
iter++;
printf("%3d ", iter);
return 0;
void set_bind_variables()
int i, n;
char bind_var[64];
/* Describe any bind variables (input host variables) */
EXEC SQL WHENEVER SQLERROR DO sql_error();
bind_dp->N = MAX_ITEMS; /* Initialize count of array elements. */
EXEC SQL DESCRIBE BIND VARIABLES FOR S INTO bind_dp;
/* If F is negative, there were more bind variables
than originally allocated by sqlald(). */
if (bind_dp->F < 0)
printf ("\nToo many bind variables (%d), maximum is %d\n.",
-bind_dp->F, MAX_ITEMS);
return;
/* Set the maximum number of array elements in the
descriptor to the number found. */
bind_dp->N = bind_dp->F;
/* Get the value of each bind variable as a
* character string.
* C contains the length of the bind variable
* name used in the SQL statement.
* S contains the actual name of the bind variable
* used in the SQL statement.
* L will contain the length of the data value
* entered.
* V will contain the address of the data value
* entered.
* T is always set to 1 because in this sample program
* data values for all bind variables are entered
* as character strings.
* ORACLE converts to the table value from CHAR.
* I will point to the indicator value, which is
* set to -1 when the bind variable value is "null".
for (i = 0; i < bind_dp->F; i++)
printf ("\nEnter value for bind variable %.*s: ",
(int)bind_dp->C, bind_dp->S);
fgets(bind_var, sizeof bind_var, stdin);
/* Get length and remove the new line character. */
n = strlen(bind_var) - 1;
/* Set it in the descriptor. */
bind_dp->L = n;
/* (re-)allocate the buffer for the value.
sqlald() reserves a pointer location for
V but does not allocate the full space for
the pointer. */
bind_dp->V = (char *) realloc(bind_dp->V, (bind_dp->L + 1));
/* And copy it in. */
strncpy(bind_dp->V, bind_var, n);
/* Set the indicator variable's value. */
if ((strncmp(bind_dp->V, "NULL", 4) == 0) ||
(strncmp(bind_dp->V, "null", 4) == 0))
*bind_dp->I = -1;
else
*bind_dp->I = 0;
/* Set the bind datatype to 1 for CHAR. */
bind_dp->T = 1;
return;
void process_select_list()
int i, null_ok, precision, scale;
if ((strncmp(dyn_statement, "SELECT", 6) != 0) &&
(strncmp(dyn_statement, "select", 6) != 0))
select_dp->F = 0;
return;
/* If the SQL statement is a SELECT, describe the
select-list items. The DESCRIBE function returns
their names, datatypes, lengths (including precision
and scale), and NULL/NOT NULL statuses. */
select_dp->N = MAX_ITEMS;
EXEC SQL DESCRIBE SELECT LIST FOR S INTO select_dp;
/* If F is negative, there were more select-list
items than originally allocated by sqlald(). */
if (select_dp->F < 0)
printf ("\nToo many select-list items (%d), maximum is %d\n",
-(select_dp->F), MAX_ITEMS);
return;
/* Set the maximum number of array elements in the
descriptor to the number found. */
select_dp->N = select_dp->F;
/* Allocate storage for each select-list item.
sqlprc() is used to extract precision and scale
from the length (select_dp->L).
sqlnul() is used to reset the high-order bit of
the datatype and to check whether the column
is NOT NULL.
CHAR datatypes have length, but zero precision and
scale. The length is defined at CREATE time.
NUMBER datatypes have precision and scale only if
defined at CREATE time. If the column
definition was just NUMBER, the precision
and scale are zero, and you must allocate
the required maximum length.
DATE datatypes return a length of 7 if the default
format is used. This should be increased to
9 to store the actual date character string.
If you use the TO_CHAR function, the maximum
length could be 75, but will probably be less
(you can see the effects of this in SQL*Plus).
ROWID datatype always returns a fixed length of 18 if
coerced to CHAR.
LONG and
LONG RAW datatypes return a length of 0 (zero),
so you need to set a maximum. In this example,
it is 240 characters.
printf ("\n");
for (i = 0; i < select_dp->F; i++)
char title[MAX_VNAME_LEN];
/* Turn off high-order bit of datatype (in this example,
it does not matter if the column is NOT NULL). */
sqlnul ((unsigned short *)&(select_dp->T), (unsigned short
*)&(select_dp->T), &null_ok);
switch (select_dp->T)
case 1 : /* CHAR datatype: no change in length
needed, except possibly for TO_CHAR
conversions (not handled here). */
break;
case 2 : /* NUMBER datatype: use sqlprc() to
extract precision and scale. */
sqlprc ((unsigned int *)&(select_dp->L), &precision,
&scale);
/* Allow for maximum size of NUMBER. */
if (precision == 0) precision = 40;
/* Also allow for decimal point and
possible sign. */
/* convert NUMBER datatype to FLOAT if scale > 0,
INT otherwise. */
if (scale > 0)
select_dp->L = sizeof(float);
else
select_dp->L = sizeof(int);
break;
case 8 : /* LONG datatype */
select_dp->L = 240;
break;
case 11 : /* ROWID datatype */
case 104 : /* Universal ROWID datatype */
select_dp->L = 18;
break;
case 12 : /* DATE datatype */
select_dp->L = 9;
break;
case 23 : /* RAW datatype */
break;
case 24 : /* LONG RAW datatype */
select_dp->L = 240;
break;
/* Allocate space for the select-list data values.
sqlald() reserves a pointer location for
V but does not allocate the full space for
the pointer. */
if (select_dp->T != 2)
select_dp->V = (char *) realloc(select_dp->V,
select_dp->L + 1);
else
select_dp->V = (char *) realloc(select_dp->V,
select_dp->L);
/* Print column headings, right-justifying number
column headings. */
/* Copy to temporary buffer in case name is null-terminated */
memset(title, ' ', MAX_VNAME_LEN);
strncpy(title, select_dp->S, select_dp->C);
if (select_dp->T == 2)
if (scale > 0)
printf ("%.*s ", select_dp->L+3, title);
else
printf ("%.*s ", select_dp->L, title);
else
printf("%-.*s ", select_dp->L, title);
/* Coerce ALL datatypes except for LONG RAW and NUMBER to
character. */
if (select_dp->T != 24 && select_dp->T != 2)
select_dp->T = 1;
/* Coerce the datatypes of NUMBERs to float or int depending on
the scale. */
if (select_dp->T == 2)
if (scale > 0)
select_dp->T = 4; /* float */
else
select_dp->T = 3; /* int */
printf ("\n\n");
/* FETCH each row selected and print the column values. */
EXEC SQL WHENEVER NOT FOUND GOTO end_select_loop;
for (;;)
EXEC SQL FETCH C USING DESCRIPTOR select_dp;
/* Since each variable returned has been coerced to a
character string, int, or float very little processing
is required here. This routine just prints out the
values on the terminal. */
for (i = 0; i < select_dp->F; i++)
if (*select_dp->I < 0)
if (select_dp->T == 4)
printf ("%-*c ",(int)select_dp->L+3, ' ');
else
printf ("%-*c ",(int)select_dp->L, ' ');
else
if (select_dp->T == 3) /* int datatype */
printf ("%*d ", (int)select_dp->L,
*(int *)select_dp->V);
else if (select_dp->T == 4) /* float datatype */
printf ("%*.2f ", (int)select_dp->L,
*(float *)select_dp->V);
else /* character string */
printf ("%-*.*s ", (int)select_dp->L,
(int)select_dp->L, select_dp->V);
printf ("\n");
end_select_loop:
return;
void help()
puts("\n\nEnter a SQL statement or a PL/SQL block at the SQL> prompt.");
puts("Statements can be continued over several lines, except");
puts("within string literals.");
puts("Terminate a SQL statement with a semicolon.");
puts("Terminate a PL/SQL block (which can contain embedded
semicolons)");
puts("with a slash (/).");
puts("Typing \"exit\" (no semicolon needed) exits the program.");
puts("You typed \"?\" or \"help\" to get this message.\n\n");
int connect_database()
err_sql = SQL_SUCC;
EXEC SQL WHENEVER SQLERROR DO sql_error();
EXEC SQL WHENEVER NOT FOUND DO sql_not_found();
EXEC SQL CONTEXT ALLOCATE :ctx;
EXEC SQL CONTEXT USE :ctx;
EXEC SQL CONNECT :db_uid;
if(err_sql != SQL_SUCC){
printf("err => connect database(ctx:%ld, uid:%s) failed!\n", ctx, db_uid);
return -1;
return 1;
int disconnect_database()
err_sql = SQL_SUCC;
EXEC SQL WHENEVER SQLERROR DO sql_error();
EXEC SQL WHENEVER NOT FOUND DO sql_not_found();
EXEC SQL CONTEXT USE :ctx;
EXEC SQL COMMIT WORK RELEASE;
EXEC SQL CONTEXT FREE:ctx;
return 1;
void sql_error()
printf("err => %.*s", sqlca.sqlerrm.sqlerrml, sqlca.sqlerrm.sqlerrmc);
printf("in \"%.*s...\'\n", oraca.orastxt.orastxtl, oraca.orastxt.orastxtc);
printf("on line %d of %.*s.\n\n", oraca.oraslnr, oraca.orasfnm.orasfnml,
oraca.orasfnm.orasfnmc);
switch(sqlca.sqlcode) {
case -1: /* unique constraint violated */
err_sql = SQL_UNIQUE;
break;
case -1012: /* not logged on */
case -1089:
case -3133:
case -1041:
case -3114:
case -3113:
/* �6�Ŭ�� shutdown�ǰų� �α�� °� �ƴҶ� ��b�� õ� */
/* immediate shutdown in progress - no operations are permitted */
/* end-of-file on communication channel */
/* internal error. hostdef extension doesn't exist */
err_sql = SQL_DISCONNECT;
break;
case -1400:
err_sql = SQL_NOTNULL;
break;
default:
err_sql = SQL_ERR;
break;
EXEC SQL CONTEXT USE :ctx;
EXEC SQL WHENEVER SQLERROR CONTINUE;
EXEC SQL ROLLBACK WORK;
void sql_not_found()
err_sql = SQL_NOTFOUND;

Hi Jane,
What version of Berkeley DB XML are you using?
What is your operating system and your hardware platform?
For how long have been the application running?
What is your current container size?
What's set for EnvironmentConfig.setThreaded?
Do you know if containers have previously not been closed correctly?
Can you please post the entire error output?
What's the JDK version, 1.4 or 1.5?
Thanks,
Bogdan

Bug:4705928 PLSQL: Memory leak using small varrays

We have Oracle version 10.2.0.1.0
We have a problem with a procedure.
In our scenario we make use of VARRAY in the procedure to pass some filter parameters to a select distinct querying a view made on three tables.
Unfotunately not always execution it is successful.
Sometimes it returns wrong value (0 for the count parameter), sometimes (rarely) the server stops working.
We suspect that this is caused by a bug fixed in versione 10.2.0.3.0
Bug:4705928 PLSQL: Memory leak using small varrays when trimming the whole collection and inserting into it in a loop
We suspect this becasue we made two procedure the first (spProductCount) uses a function (fnProductFilter) to calculate the values of a varray and passes them into the select,
while in the second procedure (spProductCount2) parameters are passed directly into the statement without varray
and there are failures only in the first procedure.
On the other hand on another server 10.2.0.1.0 we never have this problem.
The instance manifesting the bug runs under shared mode, while the other is under dedicated mode.
Turning the first one to dedicated mode makes the bugs disapear.
Unfortunately this is not a solution.
In the sample there are the three table with all constraints, the view, tha varray custom type, the function and the two procedures.
Is there someone that may examine our sample and tell us if the pl/sql code corresponds to the bug desciption.
We also want to know if it's possibile that the same server running under different mode (SHARED/DEDICATED) doesn't behave the same way.
The tables:
--Products
CREATE TABLE "Products" (
     "Image" BLOB
     , "CatalogId" RAW(16)
     , "ProductId" RAW(16)
     , "MnemonicId" NVARCHAR2(50) DEFAULT ''
     , "ProductParentId" RAW(16)
ALTER TABLE "Products"
     ADD CONSTRAINT "NN_Products_M04" CHECK ("CatalogId" IS NOT NULL)
ALTER TABLE "Products"
     ADD CONSTRAINT "NN_Products_M05" CHECK ("ProductId" IS NOT NULL)
ALTER TABLE "Products"
ADD CONSTRAINT "PK_Products"
PRIMARY KEY ("ProductId")
CREATE INDEX "IX_Products"
ON "Products" ("CatalogId", "MnemonicId")
CREATE UNIQUE INDEX "UK_Products"
ON "Products" (DECODE("MnemonicId", NULL, NULL, RAWTOHEX("CatalogId") || "MnemonicId"))
--Languages
CREATE TABLE "Languages" (
     "Description" NVARCHAR2(250)
     , "IsStandard" NUMBER(1)
     , "LanguageId" RAW(16)
     , "MnemonicId" NVARCHAR2(12)
ALTER TABLE "Languages"
     ADD CONSTRAINT "NN_Languages_M01" CHECK ("LanguageId" IS NOT NULL)
ALTER TABLE "Languages"
     ADD CONSTRAINT "NN_Languages_M05" CHECK ("MnemonicId" IS NOT NULL)
ALTER TABLE "Languages"
ADD CONSTRAINT "PK_Languages"
PRIMARY KEY ("LanguageId")
ALTER TABLE "Languages"
ADD CONSTRAINT "UK_Languages"
UNIQUE ("MnemonicId")
--ProductDesc
CREATE TABLE "ProductDesc" (
     "Comment" NCLOB
     , "PlainComment" NCLOB
     , "Description" NVARCHAR2(250)
     , "DescriptionText" NCLOB
     , "PlainDescriptionText" NCLOB
     , "LanguageId" NVARCHAR2(12)
     , "ProductId" RAW(16)
ALTER TABLE "ProductDesc"
     ADD CONSTRAINT "NN_ProductDescM01" CHECK ("LanguageId" IS NOT NULL)
ALTER TABLE "ProductDesc"
     ADD CONSTRAINT "NN_ProductDescM02" CHECK ("ProductId" IS NOT NULL)
ALTER TABLE "ProductDesc"
ADD CONSTRAINT "PK_ProductDesc"
PRIMARY KEY ("ProductId", "LanguageId")
ALTER TABLE "ProductDesc"
ADD CONSTRAINT "FK_ProductDesc1"
FOREIGN KEY("ProductId") REFERENCES "Products" ("ProductId")
ALTER TABLE "ProductDesc"
ADD CONSTRAINT "FK_ProductDesc2"
FOREIGN KEY("LanguageId") REFERENCES "Languages" ("MnemonicId")
/The view:
--ProductView
CREATE OR REPLACE VIEW "vwProducts"
AS
     SELECT
           "Products"."CatalogId"
          , "ProductDesc"."Comment"
          , "ProductDesc"."PlainComment"
          , "ProductDesc"."Description"
          , "ProductDesc"."DescriptionText"
          , "ProductDesc"."PlainDescriptionText"
          , "Products"."Image"
          , "Languages"."MnemonicId" "LanguageId"
          , "Products"."MnemonicId"
          , "Products"."ProductId"
          , "Products"."ProductParentId"
          , TRIM(NVL("ProductDesc"."Description" || ' ', '') || NVL("ParentDescriptions"."Description", '')) "FullDescription"
     FROM "Products"
     CROSS JOIN "Languages"
     LEFT OUTER JOIN "ProductDesc"
     ON "Products"."ProductId" = "ProductDesc"."ProductId"
     AND "ProductDesc"."LanguageId" = "Languages"."MnemonicId"
     LEFT OUTER JOIN "ProductDesc" "ParentDescriptions"
     ON "Products"."ProductParentId" = "ParentDescriptions"."ProductId"
     AND ("ParentDescriptions"."LanguageId" = "Languages"."MnemonicId")
/The varray:
--CustomType VARRAY
CREATE OR REPLACE TYPE Varray_Params IS VARRAY(100) OF NVARCHAR2(1000);
/The function:
--FilterFunction
CREATE OR REPLACE FUNCTION "fnProductFilter" (
     parCatalogId "Products"."CatalogId"%TYPE,
     parLanguageId                    NVARCHAR2 := N'it-IT',
     parFilterValues                    OUT Varray_Params
RETURN INTEGER
AS
     varSqlCondition                    VARCHAR2(32000);
     varSqlConditionValues          NVARCHAR2(32000);
     varSql                              NVARCHAR2(32000);
     varDbmsCursor                    INTEGER;
     varDbmsResult                    INTEGER;
     varSeparator                    VARCHAR2(2);
     varFilterValue                    NVARCHAR2(1000);
     varCount                         INTEGER;
BEGIN
     varSqlCondition := '(T_Product."CatalogId" = HEXTORAW(:parentId)) AND (T_Product."LanguageId" = :languageId )';
     varSqlConditionValues := CHR(39) || TO_CHAR(parCatalogId) || CHR(39) || N', ' || CHR(39 USING NCHAR_CS) || parLanguageId || CHR(39 USING NCHAR_CS);
     parFilterValues := Varray_Params();
     varSql := N'SELECT FilterValues.column_value FilterValue FROM TABLE(Varray_Params(' || varSqlConditionValues || N')) FilterValues';
     BEGIN
          varDbmsCursor := dbms_sql.open_cursor;
          dbms_sql.parse(varDbmsCursor, varSql, dbms_sql.native);
          dbms_sql.define_column(varDbmsCursor, 1, varFilterValue, 1000);
          varDbmsResult := dbms_sql.execute(varDbmsCursor);
          varCount := 0;
          LOOP
               IF (dbms_sql.fetch_rows(varDbmsCursor) > 0) THEN
                    varCount := varCount + 1;
                    dbms_sql.column_value(varDbmsCursor, 1, varFilterValue);
                    parFilterValues.extend(1);
                    parFilterValues(varCount) := varFilterValue;
               ELSE
                    -- No more rows to copy
                    EXIT;
               END IF;
          END LOOP;
          dbms_sql.close_cursor(varDbmsCursor);
     EXCEPTION WHEN OTHERS THEN
          dbms_sql.close_cursor(varDbmsCursor);
          RETURN 0;
     END;
     FOR i in parFilterValues.first .. parFilterValues.last LOOP
          varSeparator := ', ';
     END LOOP;
     RETURN 1;
END;
/The procedures:
--Procedure presenting anomaly\bug
CREATE OR REPLACE PROCEDURE "spProductCount" (
     parCatalogId "Products"."CatalogId"%TYPE,
     parLanguageId NVARCHAR2 := N'it-IT',
     parRecords OUT NUMBER
AS
     varFilterValues Varray_Params;
     varResult INTEGER;
     varSqlTotal VARCHAR2(32000);
BEGIN
     parRecords := 0;
     varResult := "fnProductFilter"(parCatalogId, parLanguageId, varFilterValues);
     varSqlTotal := 'BEGIN
     SELECT count(DISTINCT T_Product."ProductId") INTO :parCount FROM "vwProducts" T_Product
          WHERE ((T_Product."CatalogId" = HEXTORAW(:parentId)) AND (T_Product."LanguageId" = :languageId ));
END;';
     EXECUTE IMMEDIATE varSqlTotal USING OUT parRecords, varFilterValues(1), varFilterValues(2);
END;
--Procedure NOT presenting anomaly\bug
CREATE OR REPLACE PROCEDURE "spProductCount2" (
     parCatalogId "Products"."CatalogId"%TYPE,
     parLanguageId NVARCHAR2 := N'it-IT',
     parRecords OUT NUMBER
AS
     varFilterValues Varray_Params;
     varResult INTEGER;
     varSqlTotal VARCHAR2(32000);
BEGIN
     parRecords := 0;
     varSqlTotal := 'BEGIN
     SELECT count(DISTINCT T_Product."ProductId") INTO :parCount FROM "vwProducts" T_Product
          WHERE ((T_Product."CatalogId" = HEXTORAW(:parentId)) AND (T_Product."LanguageId" = :languageId ));
END;';
     EXECUTE IMMEDIATE varSqlTotal USING OUT parRecords, parCatalogId, parLanguageId;
END;Edited by: 835125 on 2011-2-9 1:31

835125 wrote:
Using VARRAY was the only way I found to transform comma seprated text values (e.g. "'abc', 'def', '123'") in a collection of strings.A varray is just a functionally crippled version of a nested table collection type, with a defined limit you probably don't need. (Why 100 specifically?) Instead of
CREATE OR REPLACE TYPE varray_params AS VARRAY(100) OF NVARCHAR2(1000);try
CREATE OR REPLACE TYPE array_params AS TABLE OF NVARCHAR2(1000);I don't know whether that will solve the problem but at least it'll be a slightly more useful type.
What makes you think it's a memory leak specifically? Do you observe session PGA memory use going up more than it should?
btw good luck with all those quoted column names. I wouldn't like to have to work with those, although they do make the forum more colourful.
Edited by: William Robertson on Feb 11, 2011 7:54 AM

JBoss EAP 6 On JRockit - Memory Leak

hello team.
I have memory leak problem on jboss and jrockit.
My Environment :
1. OS :
CentOS release 6.4 (Final)
2. JRockit :
java version "1.6.0_45"
     Java(TM) SE Runtime Environment (build 1.6.0_45-b06)
     Oracle JRockit(R) (build R28.2.7-7-155314-1.6.0_45-20130329-0641-linux-x86_64, compiled mode)
3. Application Server:
JBoss EAP 6.2.0.GA
4. Application
Large EJB Application (100 and more EJB Beans (Stateless, Stateful, MDB, Timers and so on)
Everything works fine on older application server versions (4.3 , 4.2)
But now I have Problem
Of course I know that problem is new version - and i have discussion on JBoss forums.
but guys I have question about jrockit with you:
What is the option "Other" in memory ??
[jboss@jboss-new bin]$ jrcmd 17114 print_memusage
17114:
Total mapped                       8457864KB           (reserved=2983100KB)
-              Java heap              3145728KB           (reserved=0KB)
-              GC tables            105232KB
-          Thread stacks       46412KB           (#threads=138)
-          Compiled code       1048576KB           (used=12257KB)
-               Internal                   1480KB
-                     OS       170324KB
-                  Other       3639056KB
-            Classblocks         10496KB           (malloced=9631KB #28393)
-        Java class data       289536KB           (malloced=192391KB #133697 in 28393 classes)
- Native memory tracking     1024KB           (malloced=294KB #10)
[jboss@jboss-new bin]$
This size increases every time - and took entire amount of RAM.
Thank in Advance.
Regards,
Paata Lominadze

Not sure what the 'other' is, but it is probably best shown by using an example. By using displayMap we can display a memory map of various JVM subsystems and libraries that are loaded, including third-party libraries.
./jrcmd 4523 print_memusage displayMap
Total mapped                  3984796KB           (reserved=2978740KB)
-              Java heap       524288KB           (reserved=0KB)
-              GC tables        17548KB
-          Thread stacks        20276KB           (#threads=39)
-          Compiled code      1048576KB           (used=14224KB)
-               Internal         1672KB
-                     OS       146924KB
-                  Other      2092648KB
-            Classblocks         7424KB           (malloced=7381KB #20064)
-        Java class data       124416KB           (malloced=124411KB #91048 in 20064 classes)
- Native memory tracking         1024KB           (malloced=118KB #10)
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
    OS                          *java    r x 0x0000000000400000.(     76KB)
    OS                          *java    rw 0x0000000000612000.(      4KB)
    OS                        *[heap]    rw 0x00000000007c1000.(    132KB)
   INT                           Poll    r   0x000000007fffe000 (      4KB)
   INT                         Membar    rw 0x000000007ffff000.(      4KB)
   MSP              Classblocks (1/2)    rw 0x00000000df8c0000 (   6912KB)
   MSP              Classblocks (2/2)    rw 0x00000000dff80000 (    512KB)
HEAP                      Java heap    rw 0x00000000e0000000.( 524288KB)
    OS                    *ld-2.12.so    r x 0x0000003664400000.(    128KB)
    OS                    *ld-2.12.so    r   0x000000366461f000 (      4KB)
    OS                    *ld-2.12.so    rw 0x0000003664620000 (      4KB)
    OS                   **ld-2.12.so    rw 0x0000003664621000.(      4KB)
   OS           *gconv-modules.cache    r   0x00007f8f2e4a0000 (     28KB)
THREAD                     Stack 4630    rwx 0x00007f8f2e4a7000 (      8KB)
THREAD                     Stack 4630        0x00007f8f2e4a9000 (     12KB)
THREAD                     Stack 4630    rwx 0x00007f8f2e4ac000 (    244KB)
   MSP         Java class data (5/37)    rw 0x00007f8f2e4e9000 ( 14336KB)
   MSP         Java class data (9/37)    rw 0x00007f8f2fa40000 (   5888KB)
                                         rw 0x00007f8f30000000 (    188KB)
                                             0x00007f8f3002f000 ( 65348KB)
                                         rw 0x00007f8f34000000 (    132KB)
                                             0x00007f8f34021000 ( 65404KB)
                                         rw 0x00007f8f38000000 (    412KB)
                                             0x00007f8f38067000.( 65124KB)
   MSP        Java class data (10/37)    rw 0x00007f8f3c034000 ( 34048KB)
                                         rw 0x00007f8f3e174000 (   8200KB)
   MSP        Java class data (11/37)    rw 0x00007f8f3e976000 (    256KB)
    OS                     *libhpi.so    rw 0x00007f8fb37fc000 (      8KB)
    OS                    **libhpi.so    rw 0x00007f8fb37fe000 (      4KB)
CODE                  Compiled code    rwx 0x00007f8fb37ff000 (     64KB)
CODE                  Compiled code    rwx 0x00007f8fb380f000 (    128KB)
CODE                  Compiled code    rwx 0x00007f8fb382f000 (     64KB)
MSP        Java class data (37/37)    rw 0x00007f8ff83a1000 (    512KB)
    GC Modified Union Set (committed)    rw 0x00007f8ff8421000 (    132KB)
    GC                     Card table    rw 0x00007f8ff8442000 (   1024KB)
    GC        Object bits (committed)    rw 0x00007f8ff8542000 (   8196KB)
Here
- thread is thread related (such as thread stacks)
- int, internal use (such as pointer pages)
- heap, chunk used by JRockit for the Java heap
- os, mapped directly from the operating system, such as third party DLLs or shared objects
- msp, memory space. a memory space is a native heap with a specific purpose, for example native memory allocation inside the JVM
- gc, garbage collection related, for example live bits
- code, compiled code
The 'other' memory space looks to me (from the blank entries in the above print-out) like they are a memory pages to are still not used. When the JVM starts it mappes an amount of memory. To my knowledge JRockit uses mmap (mmap(2) - Linux manual page), which creates a new mapping in the virtual address space. JRockit reserves an amount of memory (Java Heap (heap where your object instances go) + its own runtime (all the others)).
To see where the growth is in the various memory spaces, you can use 'print_memusage baseline', after which you can execute print_memusage again, for example,
./jrcmd 4523 print_memusage scale=M
4523:
Total mapped                     3896MB      +4MB (reserved=2905MB -3MB)
-              Java heap          512MB           (reserved=0MB)
-              GC tables           17MB
-          Thread stacks           19MB           (#threads=39)
-          Compiled code         1024MB           (used=14MB +1MB)
-               Internal            1MB
-                     OS          143MB
-                  Other         2043MB
-            Classblocks            7MB           (malloced=7MB #20596 +532)
-        Java class data          126MB      +4MB (malloced=125MB +4MB #93640 +2592 in 20596 classes)
- Native memory tracking            1MB           (malloced=0MB #20 +10)
Note the additional column that prints out the difference in memory usage in relation to the baseline. You can also monitor native allocations by using trace_alloc_sites, memory allocations can then be displayed with different levels of detail using the level argument.
./jrcmd 4523 print_memusage trace_alloc_sites=true
4523:
Total mapped                  3989660KB   +4864KB (reserved=2974732KB -4008KB)
-              Java heap       524288KB           (reserved=0KB)
-              GC tables        17548KB
-          Thread stacks        20276KB           (#threads=39)
-          Compiled code      1048576KB           (used=15265KB +1040KB)
-               Internal         1672KB
-                     OS       146924KB
-                  Other      2092648KB
-            Classblocks         7680KB    +256KB (malloced=7669KB +287KB #20596 +532)
-        Java class data       129024KB   +4608KB (malloced=128967KB +4555KB #93640 +2592 in 20596 classes)
- Native memory tracking         1024KB           (malloced=236KB +118KB #20 +10)
./jrcmd 4523 print_memusage level=3
4523:
Total mapped                  3989660KB   +4864KB (reserved=2974732KB -4008KB)
-              Java heap       524288KB           (reserved=0KB)
-              GC tables        17548KB
-          Thread stacks        20276KB           (#threads=39)
-          Compiled code      1048576KB           (used=15265KB +1040KB)
-               Internal         1672KB
-                     OS       146924KB
-                  Other      2092648KB
-            Classblocks         7680KB    +256KB (malloced=2KB -7379KB #4 -20060) Not fully traced
-        Java class data       129024KB   +4608KB (malloced=26KB -124385KB #16 -91032 in 20596 classes) Not fully traced.
- Native memory tracking         1024KB           (malloced=118KB #10) Not fully traced.
     gather_memorymap_database                     memtrace.c: 206         91KB     +91KB (#1 +1)
           gather_memory_usage                  osal_mspace.c:5142          7KB      +7KB (#4 +4)
msGatherMSpacesUsageDatabase                  osal_mspace.c:6128          2KB      +2KB (#1 +1)
msGatherMSpacesUsageDatabase                  osal_mspace.c:6134         16KB     +16KB (#1 +1)
Note this is more on the JVM level, in your case in might be beneficial to investigate what is happening on the java heap. By using print_object_summary you can get insight how memory on the heap is used on a per-class basis. To get to the bottom of where the memory leak is you can use the memory-leak-detector (an example of its use can be found here Middleware Snippets: Fast, Faster, JRockit). You can also obtain a heapdump that can be analyzed by using for example MAT (see for an example here Middleware Snippets: Visualizing Class Loading). To obtain a heapdump you can run the command, for example,
[weblogic@machine1 bin]$ ./jrcmd 4523 runsystemgc full=true fullcompact=true
4523:
[weblogic@machine1 bin]$ ./jrcmd 4523 hprofdump filename=/home/weblogic/dump.hprof
4523:
Wrote dump to /home/weblogic/dump.hprof
Note that this first issues a full GC by using the runsystemgc command.

Memory Leak in Report after upgrading from Crystal Reports 10.5 to 13.0.1/2

I'm currently having an issue with crystal reports 13 (Visual Studio 2010), We have recently updated our CRM Solution to use the newer crystal reports runtime as we are now using Visual Studio 2010,
We have a client who has a report which contains a sub report which basically contains a Image pulled from a MSSQL Database as a BLOB Image Field which is basically scanned images relating to the report, Previously the report worked fine before the Client Updated our CRM Solution to the latest version, Now for each individual page which has the scanned image the application is swallowing 100 MB of ram, as there are around 32 of these scanned images and our solution is a 32 bit application we are getting out of memory errors due to the whole 2GB addressable to a 32 bit process limitation,
The images are around 4MP and stored in JPG format in the database so should not be consuming over 100mb of ram per image displayed by the report even if they are being stored uncompressed in RGBA Format,
Likewise when viewing the pages of the report manually after a specific page (when the amount of memory addressable by a 32 bit application gets hit) the images just don't display and then any pages with the image are not being displayed and not giving an error / exception.
I have tried re-saving the .rpt files to cause them to be in the newer crystal reports format and this is still happening, likewise I have tried un-installing the 13.0.1 and installing the 13.0.2 runtime.
I am just about to check SQL which pulls the image for the sub report, although I am sure for each sub report it should only be pulling one row with one jpeg image in case the sub report is holding quite a few images but only displaying the first.
Likewise If all else fails I will try re-creating the report as I have experienced issues with some other specific reports doing strange things after being updated from the 2008 runtime which I really am not liking the idea of due to how fiddly crystal reports can be, It is good and does the job but takes far longer than some other solutions to get what you are trying to achieve done.
This report had been working fine for 2+ years before the client updated to the most recent version of our CRM Software.
Has anyone else experienced simular issues with the latest runtime.

I have just been reviewing the code for this and it appears that the sub report is pulling all of the images,
It is strange that previously this was working fine seems like the newer runtime does not dispose of the data once it has been displayed on a sub report which would explain memory leak as it will call the select again pulling approx 60 images which are probably approx 8 - 900KB plus sub report + uncompressed image to display and then filtering.
I am about to modify this report and will post if fix i put in place resolves the issue.

Scale Image Memory Leak

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