Memory Leak In Program - Server (Windows 2003) Is Crashing?
Feb 5, 2010
working on an application which performs a set of operations on Active Directory based on an op code.The application was developed long back and has been working fine. I recently made few changes, which is causing the Server to run out of memory whenever the program is being run. I also modified the code to make sure that the variables being declared in each function are set to "Nothing" at the end of function so that the memory can be collected by garbage collector. To make sure, I'm also forcing garbage collection to take place at different parts of the program. But, I still continue to have the issue. The program is very big and hence I could not upload it.
The code retrieves a list of rows from a table with opcodes in it and based on operation code, it performs a set of tasks. The problem is that when it loops through each row in the table, the size of memory required by the program keeps increasing (> 1 GB) to the point where the Server (Windows 2003) is crashing. I have tried different profiling tools, but none of them have been able to detect any memory leaks in the program. I'm guessing that the resources are being held up and hence causing this issue.
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Jan 29, 2010
We have a small service shows continuous nonpaged pool bytes increase from the moment it is started. This is only on a 2008 server (all the others work fine).
The service basically connects a socket to a client to see if it's successful and then closes (most code omitted):
[Code]...
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May 12, 2011
I'm getting a really strange error. I have a program that needs to run a thread on startup, and for some reason when I do myThread.Start() in Form1() it will crash with "program is not working" (But only on Windows Server, not on my local machine!). However, if I put the same code under button1_Start() it works no problem. What gives?
EDIT A little extra information: In my thread I have a line of code that uses invoke
Invoke(new Action(() => richTextBox1.AppendText(string.Format("Updating {0}..
", DateTime.Now))));
And for some reason the crashing goes away after I make the thread sleep for 2 seconds before it starts executing. Am I using the right method to execute code on the app startup?
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Feb 7, 2010
I am working on moving applications from Windows 2000 to new server Windows 2003 R2(64 Bit). I noticed that there are some VB programs and config files for those programs have been placed in Windows 2000 Registry. Some other applications are using them from different servers.Why do we use registry here? How can i move these to registry in windows 2003? Can I just move these or do I have to write VB programs to place them in 2003 registry?
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Mar 12, 2010
I have a .net Windows Service developed in VB.net. I have a settings file in the root directory called Connections.XML and I am setting the basedirectory [code]...
When I schedule the service this is working absolutely fine in my Windows XP machine. But when I installed the same service in our development server (Windows 2003 64 bit Server) for some reason it is not able to locate this file.
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Jun 14, 2011
I am a project analyst emrpesa software and recently in our systems. Net that are still
a minority began to System.OutOfMemoryException.
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Jun 9, 2011
We have constructed a windows service unde W2003 Server in vb.net 2010 to process certain database transactions. It should work 24/7 o the server. However, after 3/4 days it blocks the windows server operation since the memory usage is ever-increasing. After many revisions, we decided to place under "comments" all operational code, including all transactions to the SQl Server database and left just a kind of shell service that is doing no real work. Still, under these circumstances, the memory usage goes on increasing. Any idea how to prevent this from happening?
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Jul 11, 2009
This is a little app that sits in your task bar and check a website for the presence of a simple string. The string is either "ONLINE" or "OFFLINE". THe problem is that there seems to be a minor memory leak, since every once in a while (I suppose when the timer expires) the memory it takes up increases by a good bit. [code]
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Jul 2, 2011
Inspired from this question, was wondering what are the possible ways to create a memory leak in .Net. I once found one with ODBC Data Access. Has anyone had any experiences with latest version?
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Nov 25, 2010
I'm trying to fix a problem that is just killing my program's efficiency. When I run it, it starts out at maybe 10M of RAM, but it gradually increases. Within 20 minutes, it can get up to 700M of RAM. Now, when the program is restarted, all of this goes away and starts anew, but restarting the program every so often is a very loose solution. Here's what my program does: there's an array in which many (anywhere from 500-4000 or so) links are placed. I have a webbrowser that navigates to each of these and does an action on them, then moves to the next page. For example: [Code]
And all of the actions work perfectly, but the memory exponentially increases, resulting in a crash if left on for too long. I've searched Google and all I've found is that that's not the actual usage, and that if you just minimize it and maximize it again it will go down, but it did not when I tried it. Why is the memory increasing so much like that, and is there any way to fix it?
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Mar 21, 2011
I am fairly new to visual basic and have written this program to detect a change in a selected pixel on the screen. When the pixel changes, a sound plays every x seconds. It works fine but after a few hours of operation a possible memory leak causes it to either crash the program or the PC. I have watched the process and I can see 4k added to it every 4 seconds or so. Where this memory leak is coming from?
Here is the code:
Public Class Main
Public pointx As Long
Public pointy As Long
Public areaselected As Integer
Public TimeToPause, SecondTimer, changefound As Integer
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Jan 11, 2012
The follow code can be called about 6K times on the server it is run on then gets a out of memory error in the last catch statement. I don't see what is wrong with the code, it works well up until the out of memory..
Public Function AddUserToGroup(ByVal sSamAccountName As String, ByVal sGroupName As String) As Boolean
Try
Dim returnStatus As Boolean = True[code]......
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Sep 25, 2011
I am building a Setup project for a Web system using Visual Studio 2008. I upgraded my development machine from Windows Xp to Windows 7. The problem started with Windows 7. Whenever I try to build I get the above error. I ve tried several solutions given online but I ve failed to get a solution. When I transfer the system to a machine running Windows Xp or Windows 2003 Server it builds successfuly.
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Apr 10, 2012
I have a problem with scroll in a treeview in a Windows forms application (Framework version 3.5).
The strange thing about the problem is that on Windows XP, Windows 7 and Windows 2008 the scroll works as excepted, but in Windows Server 2003 SP2 the scrolling doesn't work. Enable/disable Visual Styles doesn't seem to make a difference on Server 2003.
Steps to reproduce the error:
1. Add a treeview to a form and add x nr of root items (and 1 sub item to each item).
2. Expand a number of nodes. The non-standard thing here is that we are changing the node integral height because we display a usercontrol with the treenode (See example of the code below).
3. When you scroll afterwards, you cannot scroll to the bottom node. The scrollbar is all the way down, but we are not seeing the last node.
Public Shared Sub SetNModeHeight(ByVal Node As TreeNode, ByVal IntegralHeight As Integer)
'Create instance of tvitemex structure.
[Code]....
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Jun 19, 2009
I have developed a application in VB.net and VB 6.0 which uses Windows 2003 SERVER (SBS) Fax Service to Send Fax.This works fine with Administrator Account Privilage use logs into windows but in case when non Admin Privilage account user logs into windows application exception is generated ("Permission Denied").User has full Control on C Root still
OS Windows 2003 Server SBS
Programming Platform : VB.net 2.0 and VB 6.0
Windows Fax Server
Code With create this issue is
Dim objFaxDocument As FAXCOMLib.FaxDoc
Dim objFaxServer As New FAXCOMLib.FaxServer
objFaxServer.Connect ("SERVER") 'This were when non Admin Account User Log Exception in Generated ("Permission Denied")
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Feb 9, 2011
This code was put together for a one time run. It's purpose is to count all the pages in a group of images. After about 6000 of 1,250,000 images in ##X it throws an "out of memory" error. Besides it being thrown together for a one time run does anybody see anything obvious that could be causing the error?
CODE:
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Jun 29, 2009
.NET Winforms App Under Windows 2003 Server
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Mar 31, 2009
.NET Winforms App Under Windows 2003 Server
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Jun 18, 2010
which file i should install in our windows server 2003 for it to support the windows 2003 server should i download the all framework (200+ mb i think) ?
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Mar 2, 2009
I am NOT allowed to install into Windows Server GAC. I am allowed to upload my program files to a shared drive, not the operating system drive.To begin, I created a simple Class Library .dll and uploaded the entire project folder to the shared drive. I have absolute permission to do anything with this drive and the computer. This class library has only (1) public property.I created a client exe. with a reference to the shared drive .dll. I do not want a local copy of the .dll into my client folder. I want all clients to use this shared copy on my shared drive. And I repeat, I do not want to install into the GAC. I also have full permissions on my terminal.I have created a key file (.snk) for my .dll, and set up assembly information (public id) and tested.I have tried without key(.snk file), and removed assembly information, and tested.Can someone point me into the direction to install/or not to install a MyClass.dll on a shared driveand be able to reference it from other applications?I do not want to use ASP.NET. This is just a base class. This is not a Web service. It seems Windows server 2003 wants this installed into the GAC (C:WindowsAssembly)I have to be missing something.
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May 6, 2011
THis code below retrived Hdd SerialNumber.it works both on windows Xp and windows 7.But does not work on Windows 2003 Server SP2.
[Code]...
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Mar 3, 2010
I've developed a VB.NET application with Visual Studio 2008. The application communicates with SQL Server and processes a text file.
My question is about performance. While I run it from Visual Studio 2008, it takes 3 sec to complete. The same is when I run the executable created by the Setup Wizard on my desktop (Windows XP sp 3). But if I run the executable installed on a Windows 2003 Server, it takes 15 sec to complete! What could be the reason of degrading performance on the server vs. the desktop? The .Net framework 3.5 SP1 is installed both on the desktop and the server.
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Feb 9, 2010
I have the following Leak situation in a VB.NET (.NET2) application: a form - DetailTache (TaskDetails) - in my MDI application is not garbage collected is not collected ofter open/close.
EDIT: Result search from projet of WinComboRowSelected Event. There are 3 usages of this word in application:
Declaration in Class WinCombo: Event WinComboRowSelected(ByVal sender... (only one)
Raising: RaiseEvent WinComboRowSelected(sender, (3 raisings)
Usage: ...e As Keolis.ctlWinCombo.WinCombo.WinComboRowSelectedEventArgs) Handles cmbProduit1.WinComboRowSelected (multiple handles).
there is No other usage of this event.
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Sep 2, 2011
I refresh a DataGridView every second. It has about 50 rows. This ends up using the entire memory of the computer in about 1 day. I wanted to see what recommendations you had to clear up this memory leak.
The DataGridView1 is bound to a DataTable.
DataGridView1.DataSource = MyDT
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Jun 1, 2012
I refresh a DataGridView every second. It has about 50 rows. This ends up using the entire memory of the computer in about 1 day. I wanted to see what recommendations you had to clear up this memory leak.
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Jun 13, 2006
I am having a very strange memory leak that seems related to databinding. It is very hard to reproduce, so I won't post any code here to do so, but will just describe the problem.We have data entry forms which have controls which bind to custom business objects through a BindingSource object.
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Oct 19, 2011
I am working on a desktop application in VB.net 2005. The application contains a timer with an interval of 1 min. Each time the timer ticks, a set of functions gets executed, mostly database related.Initially the application runs fine. In processes(Task manager) the cpu usage goes to 100% every time the timer is invoked. But the timespan is around 1 sec(negligible).However as the time passes and after around 20 hours the time span of timer_tick increases to something like 20-30 secs. In this period cpu usage is 100% and the application does not responds. Gradually the time span of timer_tick increases to 1 min and the cpu uses gets stuck to 100% and the application does not responds.All objects are properly disposed. Moreover, this issue is with pentium 4 processors. The application runs fine on core 2 duo.[code]Many Select, Update and delete queries are performed in the timer.This problem occurs when I am using around 7000 records in database.
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Oct 19, 2011
I am working on a desktop application in VB.net 2005. The application contains a timer with an interval of 1 min. Each time the timer ticks, a set of functions gets executed, mostly database related.Initially the application runs fine. In processes(Task manager) the cpu usage goes to 100% every time the timer is invoked. But the timespan is around 1 sec(negligible).
However as the time passes and after around 20 hours the time span of timer_tick increases to something like 20-30 secs. In this period cpu usage is 100% and the application does not responds. Gradually the time span of timer_tick increases to 1 min and the cpu uses gets stuck to 100% and the application does not responds.All objects are properly disposed.Moreover, this issue is with pentium 4 processors. The application runs fine on core 2 duo.
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Jan 12, 2010
This is a very simple UDP Listener class. I can add it to my applications and give them the ability to accept a text command from a UDP packet. I use it for simple, insecure, non-vital communication between a couple apps. The code as written here works--except it has a memory leak. The program's memory usage will slowly build until it crashes. I believe I'm doing something wrong with the way I do the udp.receive method or perhaps the threading? I was trying to keep it as simple as possible when I wrote this, but let me know if I'm doing anything wonky here.
[Code]...
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Dec 16, 2009
I created a simple application to display the current Date/time on a Form (see below). When the application runs, the amount of memory used continues to grow. I don't see any obvious problems. I am running Visual Studio 2008 on Vista Business OS.
[Code]...
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