Solved

Microsoft Jet Database Engine cannot open file ",

Posted on 2011-09-15
7
257 Views
Last Modified: 2012-06-21
I have a Windows form application installed on my development server. When I run the exe(using a network path) from my machine(Windows 7) it runs fine. However when another user(running Windows XP) runs it from his machine he gets the following error
Microsoft Jet Database Engine cannot open file ", It is already opened exclusively by another user or you need permission to view this data.
I have checked and the msjet40.dll exists on both machines.

Any ideas why this could be happening,
Thanks,
Aditya
0
Comment
Question by:pmac38CDS
  • 4
  • 2
7 Comments
 
LVL 16

Expert Comment

by:Easwaran Paramasivam
ID: 36547948
Well. You are running the exe. Please Stop using the EXE or kill the process from your task manage. So that other person could open the same.
0
 
LVL 1

Author Comment

by:pmac38CDS
ID: 36548565
The XP  user gets the same error when he tries it even though I have stopped using the exe.

Thanks,
Aditya
0
 
LVL 28

Expert Comment

by:strickdd
ID: 36549070
Since you are running from a windows share, it means that the database is being shared by everyone running the application. If you turn off the Windows 7 box, it will force the connection to close and the XP machine should be able to run the app and connect to the DB.

If this does work, and you need the application to run on both computer simultaneously, it means that the application has an open connection to the database that needs to be closed in order to allow another instance to connect. Check the code and make sure to use the following structure:

1. Open Connection
2. Execute Query
3. Close Connection
4. Dispose of objects (optional)
0
Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

 
LVL 1

Author Comment

by:pmac38CDS
ID: 36550826
I am opening and closing the connection everytime the  Jet Engine is called.

Thanks,
Aditya
0
 
LVL 28

Expert Comment

by:strickdd
ID: 36550876
Then I would recommend finding out what process has a lock on the file (http://windowsxp.mvps.org/processlock.htm).

Did you try restarting the Windows 7 machine and using JUST the XP machine?
0
 
LVL 1

Accepted Solution

by:
pmac38CDS earned 0 total points
ID: 36556271
I got around the problem by not using the Jet Engine.
0
 
LVL 1

Author Closing Comment

by:pmac38CDS
ID: 36585501
I got around the problem by not using the Jet Engine.

Thanks,
Aditya
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction Although it is an old technology, serial ports are still being used by many hardware manufacturers. If you develop applications in C#, Microsoft .NET framework has SerialPort class to communicate with the serial ports.  I needed to…
This article is for Object-Oriented Programming (OOP) beginners. An Interface contains declarations of events, indexers, methods and/or properties. Any class which implements the Interface should provide the concrete implementation for each Inter…
This video shows how to quickly and easily add an email signature for all users on Exchange 2016. The resulting signature is applied on a server level by Exchange Online. The email signature template has been downloaded from: www.mail-signatures…
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…

807 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question