473,804 Members | 3,686 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

Service start issue on Computer restart

I have a Windows Service developed in VB.NET that attempts to connect to a
database as soon as the service starts. I have no problem when I start the
service manually - but when I restart the computer that hosts the service, I
get a Null Reference Exception when I try to connect to the database (I have
set the service to start automatically). Any ideas why this is happening?

Thanks in advance.

Ajay Mirmira
Nov 21 '05
10 1914
Thanks you all for the support. I finally found the issue. Chris Dunaway was
right after all. The service depends on SQL Server to be started - if the SQL
Server is not started, then the error occurs. By some freak coincidence, SQL
Server was turned off when I was performing the reboot test - and it was
turned on when I started it manually.

I caught this condition when the service failed to start manually. Anyways,
I have added better error handling in my code - now I get the error "SQL
Server does not exist or access is denied". This is a more acceptable error
and allows me to troubleshoot.

Once again, thanks to you all.

Ajay Mirmira
"amirmira" wrote:
I have a Windows Service developed in VB.NET that attempts to connect to a
database as soon as the service starts. I have no problem when I start the
service manually - but when I restart the computer that hosts the service, I
get a Null Reference Exception when I try to connect to the database (I have
set the service to start automatically). Any ideas why this is happening?

Thanks in advance.

Ajay Mirmira

Nov 21 '05 #11

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

4
2387
by: Mrinal Kamboj | last post by:
Hi , Doubt may be bit trivial , but i wanted to know , what are the exact benefits derived while we run a background process as an NT service in windows , we can as well achieve the functionality using standalone exe , which will keep on running in a loop and do the job till been messaged to stop . Essentially , i want the key advantages of implementing process daemons as an NT Service in windows .
14
25133
by: iceman | last post by:
Hello, I have a windows service. I want to restart it after every 24 hour. Is it possible to restart the service programmatically(from the service itself) using the sercvice controller object? Or should i chose some other approach? Any ideas? Thanx for all help. - Iceman
6
3809
by: Leonardo Curros | last post by:
Hello, I would like to know what's the best way to restart one service. I would like to do it from the service itself. Is this possible? I try it with ServiceController.stop() ServiceController.WaitForStatus(ServiceControllerStatus.Stopped) ServiceController.start() but doesn´t works. It seems waitforstatus instruction is the last
1
3702
by: Sergey Krutous | last post by:
Can you please help me to resolve the following issue: I developed a windows service. At start up (I have overriden OnStart method) it connects to a web service and if the connection fails the windows service sets ExitCode property to non-zero value (55) and calls Stop method. If this happens when user starts the service in Services snap-in SCM shows error massage and service stops - it's OK. I configured automatic startup and Recovery...
0
4240
by: Chung Leong | last post by:
Here's a short tutorial on how to the OLE-DB extension to access Windows Indexing Service. Impress your office-mates with a powerful full-text search feature on your intranet. It's easier than you think. First, download and install the extension (http://sourceforge.net/project/showfiles.php?group_id=171247&package_id=198554). Simply unzip the file and copy the correct version of php_oledb.dll into the PHP extensions folder. Then add the...
4
3184
by: kkt49 | last post by:
# vim: et sw=4 ts=8 sts from wxPython.wx import * import sys, os, time import pywintypes import win32serviceutil import win32service import win32event import win32process
7
7236
by: shai | last post by:
I am working at .net 1.1, writing in c#. I have windows service with a COM object. Every unexpected time The COM object throw an error that make my service get stuck (do not respond). I can catch this error. I want to restart my windows service every time the COM object throws an error. I use System.ServiceProcess.ServiceController to stop and start my service. But there is one thing I do not understand:
4
21768
by: carson | last post by:
I have written two windows services: - service A does some crunching of local data files and uploads them to a central processing computer via http. - service B monitors a manifest file on a webserver to see if service A needs to be updated. What service B does if it sees their is an update for service A is to download a new copy of the service A executable, stop service A, replace the executable with the new copy, and start service B...
0
3297
by: Shalako | last post by:
Today was this second time this happened. It occured at 12:00AM on 7/14 and today 7/18 according to the application event viewer. The event viewer error says: The Apache service named reported the following error:>>> (22505)Access is denied. : Apache.exe: could not open error log file C:/Apache2/logs/error.log. So I try to start the service and I get this pop up box error: "Windows could not start the Apache2 on Local Computer. For more...
0
9706
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look ! Part I. Meaning of...
0
9582
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it. First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
1
10323
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
1
7621
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules. He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms. Adolph will...
0
6854
by: conductexam | last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert into image. Globals.ThisAddIn.Application.ActiveDocument.Select();...
0
5652
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
1
4301
by: 6302768590 | last post by:
Hai team i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
2
3821
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.
3
2993
bsmnconsultancy
by: bsmnconsultancy | last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.