UNC上的Windows服务和MS Access

Question

I am trying to get my Windows service to connect to an MS Acces database that is located on a UNC

private static void InsertData(string sql)
    {
        System.Data.OleDb.OleDbConnection conn = new System.Data.OleDb.OleDbConnection();

        conn.ConnectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;" +
                                @"Data source=\\svr\Users\XXXX\XXXXX\db.accdb";


        try
        {
            conn.Open();
            OleDbCommand cmd = new OleDbCommand(sql, conn);
            cmd.ExecuteNonQuery();

            WriteToFile("Data saved successfuly...!");
        }
        catch (Exception ex)
        {
          WriteToFile("Failed due to: " + ex.Message);
        }
        finally
        {
            conn.Close();
        }
    }

This is the error I get "The Microsoft Access database engine cannot open or write to the file '\\svr\\Users\\XXXX\\XXXXX\\db.accdb'. It is already opened exclusively by another user, or you need permission to view and write its data."

The permissions are set to domain users, read, write and modify etc. The database is not open by anyone.

I have tried the exact code in a console app and it works fine. Any ideas?

Answer 1

I just remembered where you could have an issue. I remember having issues with the 64-bit ODBC vs. 32-bit ODBC!

If you are running 32-bit Ms Access you have to use 32-bit ODBC executable at path C:\\Windows\\SysWOW64\\odbcad32.exe !

You have to setup the connecting first:

1) C:\\Windows\\SysWOW64\\odbcad32.exe started as administrator and clicking on button add :

2) Then enter your connection here:

First edit An example of filling the ODBC Data Source:

Don't forget that afterwards you are addressing your newly create data source.