Solved

Microsoft Jet Database Engine cannot open file ",

Posted on 2011-09-15
7
255 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
Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

 
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

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

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

Bit flags and bit flag manipulation is perhaps one of the most underrated strategies in programming, likely because most programmers developing in high-level languages rely too much on the high-level features, and forget about the low-level ones. Th…
We all know that functional code is the leg that any good program stands on when it comes right down to it, however, if your program lacks a good user interface your product may not have the appeal needed to keep your customers happy. This issue can…
This video demonstrates how to create an example email signature rule for a department in a company using CodeTwo Exchange Rules. The signature will be inserted beneath users' latest emails in conversations and will be displayed in users' Sent Items…
This is a video describing the growing solar energy use in Utah. This is a topic that greatly interests me and so I decided to produce a video about it.

929 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

Need Help in Real-Time?

Connect with top rated Experts

9 Experts available now in Live!

Get 1:1 Help Now