I'm trying to set up the database password on an MS Access file (.accdb), and I keep getting the error message telling me to open the database in exclusive mode, even when I do open it in exclusive mode. I've exhausted my usual troubleshooting options (turn the computer off and then turn it on again) so I turn to Stack Overflow for help!
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I connect to a local SQL server with MS Access. I can work without problems for a few days but my database invariably corrupts and I get the error message "your network access was interrupted. To continue, close the database, and then open it again".
The file size also drops to 0.
there is no problem with the network.
I'm a new hire, so with limited knowledge I would think it's an authentication issue.
Any help is appreciated.
We've got a lot of Access databases (typically 2007) and we find this with nearly all of them as of recently. When a user launches a database it works perfectly fine until they close it down, any subsquent launches give an error on startup...
Execution of this application has stopped due to a run-time error
Users are using Access Runtime and I have access to the full version for legacy development purposes. One thing we have found is that after the first launch there's a hanging MSACCESS.exe process, if you bin it off then it fixes Access temporarily.
We have attempted compacting the databases to no avail.
Is there anyway to get a more detailed error? I have checked event viewer and also set the startup form to none, yet the issue still occurs.
Open one of the offending database and watch when the error kicks in.
That should lead to either an error message or the code window with the error highlighted.
I have an access database that sits on server x iis is running on server y. One of my web pages access data from the access database. If someone has the access database open say a end user on our network the web pages fail with a ...already opened exclusively by another user error message.
I created a local access database and used linked tables in order to access the tables that way. Even still I get the already opened exclusively by another user error. If I go through windows explorer and browse out to server x and open the database I can without issue. So my question is how can I simulate the same type of connectivity to the database without the error being thrown is it a matter of permissions to the access database or something within my connectionstring that would allow me to access the database.
Since it throws the error during my connection.open command I am figuring it is either permission related or something additional I need to add to my connection string. I have granted full control for the IIS AppPool\ on the local directory in which my local instance of the access database resides in but didn't seem to make a difference.
My connection string looks like:
Private Shared connSheriff As New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=\\serverx\directory\Access\MyDatabase.mdb;Jet OLEDB:Database Password=property;")
There are some options within the mdb that change how the database is opened by default, these should be your first port of call particularly setting the "default open mode" to "shared".
You've already split the database (data tables in the shared back-end, linked tables and the rest in the front-end). Make sure that each user uses a separate copy of the front-end mdb, otherwise you'll get locking issues on this.
There is a command line switch (/excl) that sets exclusive mode, but you just omit this to open the db shared so I doubt this is a problem.
You probably already know this but the "Shared" modifier has nothing to do with sharing between applications or users, but shares the connection variable between instances of your class (the c# equivalent is "static")
I'm trying to connect to an Access database file using a System.Data.OleDb.OleDbConnection. I need to connect in readonly mode because another application uses it at the same time. I can connect to the database in read/write no problem but can't seem to find anywhere the correct string for readonly.
I've tried:
Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Persist Security Info=False;Mode=Read
Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Persist Security Info=False;Extended Properties="ReadOnly=true;"
Thanks.
EDIT:
(I should have put more information in the original question.)
I could connect successfully to the access database when it was on the local machine, but when I tried connecting to the access database on a remote machine with the connection string
Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Persist Security Info=False;Mode=Read
I would get the following error:
System.Data.OleDb.OleDbException (0x80004005): The Microsoft Office Access database engine cannot open or write to the file '{0}'. It is already opened exclusively by another user, or you need permission to view and write its data.
My application is running in a windows service under the local system account.
I think that has to be handled either by user permissions that the DB admin would control, or with different cursor types for your recordsets, which you would control. I don't think the connection string specifies access mode, it just gets you there. ;)
The real problem is that Excel leaves the connection open until the file is closed.
In Excel 2007+, the MaintainConnection setting is set to true by default. You need to go into the vb editor and use code to turn it to false. I haven't seen a way to do this through the visual interface.
Even if you set the connection string to readonly, it will lock an access database (from my experience).
For a pivottable connection:
Sheets("sheet1").PivotTables("pivottable1").PivotCache.MaintainConnection = False
For QueryTable:
Range("A2").Select
Selection.ListObject.QueryTable.MaintainConnection = False
Selection.ListObject.QueryTable.Refresh BackgroundQuery:=False
By setting it to false, the table will connect, run the command, then disconnect, releasing the lock.
I had to work on an already made website, just adding some small module
While i was updating, there was many files called myDB.mdb in the different subfolders
i wanted to make sure that my app is connecting the right database
so i started renaming subfolder...at one of those subfolders, i refreshed,the main site and mine stopped working
i renamed back to the correct name.. refresh... refresh... refresh.. i am still refreshing and i started another browser.. it is giving a connection problem :S
Provider error '80004005'
Unspecified error
/new/conn.asp, line 13
any idea about his :S
would appreciate any help !
I have had the same problem. The first time I loaded a page it worked well, but if I loaded the page again quickly, then I got this error. If I waited for a while then I didn't get the error. It must be because when you call objConnection.Close it takes some time to actually close the mdb file, so if you try and open it again you get the "File already in use type error". Strangely adding a mode to the connection sorted this problem out for me. It doesn't have to be read only, read / write works as well.
objConnection.Mode = 1 ' read only
Microsoft OLE DB Provider for ODBC
Drivers error '80004005'
[Microsoft][ODBC Microsoft Access
Driver] The Microsoft Jet database
engine cannot open the file
'(unknown)'. It is already opened
exclusively by another user, or you
need permission to view its data.
or
Microsoft OLE DB Provider for
ODBC Drivers (0x80004005)
[Microsoft][ODBC Microsoft Access
Driver] '(unknown)' isn't a valid
path. Make sure that the path name is
spelled correctly and that you are
connected to the server on which the
file resides.
or
Microsoft OLE
DB Provider for ODBC Drivers error
'80004005' [Microsoft][ODBC Microsoft
Access 97 Driver] Couldn't use
'(unknown)'; file already in use.
From: http://tutorials.aspfaq.com/8000xxxxx-errors/80004005-errors.html
Whatever happened, it is resulting in an 80004005 error, so the problem is definitely a permission issue.
Depending on the configuration of the web server, it may not be the IUSR account that needs the access. I find it's best to fire up FileMon, filter it to the name of my database (with wildcards), and check out the properties of the error that shows up. Viewing the properties will show you the user that is actually trying to access the file.
For Access databases, you want to make sure that you're modifying the permissions of the folder and not the file. You'll need Modify permissions on the folder so that the .ldb file can be created.
Check that the IUSR account has permissions on the Access database and the folders/sub-folders containing it. I've found that on occasion if you rename or compact an access database it loses IUSR priviledges so appears in use / locked
I had the same error on Access DB :
Provider error '80004005'
Unspecified error
Reason was that one of the pages included files was not in the right format (UTF-8) but ANCI
When I changed that file to UTF-8 , everything woked right !
greeting otto
Googled in but the issue was spaces in the filename for my situation. Remove them and no problems. I hope that will help someone else.