Oledbconnection.open Unspecified Error Excel
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System.data.oledb.oledbexception Unspecified Error Excel Upload
related threads Remove From My Forums Answered by: Intermittent Issue - OleDbConnection.Open() throws System.Data.OleDb.OleDbException: Unspecified error Data Platform Development > ADO.NET Managed Providers Question 0 Sign in to vote Aproduction application in our organization uses Excel 2003 files to handle user submitted data through a web application. This adodb.connection open unspecified error application works reliably most of the time. Recently, the application has begun intermittently throwing "System.Data.OleDb.OleDbException: Unspecified error" when the OleDbConnection.Open() method is called. The error continues until the application pool is recycled, at which time everything functions as expected again. No errors are captured within the Windows Application event log. The ASP.NET web application is hosted within web parts in WSS 3.0 on a Windows Server 2003 32 bit machine. Any insight would be much appreciated. We are using the following code to retrieve data from an Excel 2003 file: public static DataTable GetWorksheetData(string filePath) { OleDbConnectionStringBuilder builder = new OleDbConnectionStringBuilder { DataSource = filePath }; builder.Provider = "Microsoft.Jet.OLEDB.4.0"; builder["Extended Properties"] = "Excel 8.0;IMEX=1;HDR=YES"; DataTable table = new DataTable(); try { // Creates an OleDbConnection for the excel file using (OleDbConnection connection = new OleDbConnection(builder.ConnectionString)) { connection.Open(); string sheetName = GetWorksheet(connection, "Tem
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The 'microsoft.ace.oledb.12.0' Provider Is Not Registered On The Local Machine.
Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up OLEDBConnection.Open() generates 'Unspecified error' up vote 2 down vote favorite 1 I have an application that uploads an Excel .xls file to the file system, https://social.msdn.microsoft.com/Forums/en-US/58b30013-453e-4418-a256-292436524500/intermittent-issue-oledbconnectionopen-throws-systemdataoledboledbexception-unspecified?forum=adodotnetdataproviders opens the file with an oledbconnection object using the .open() method on the object instance and then stores the data in a database. The upload and writing of the file to the file system works fine but I get an error when trying to open the file on our production server only. The application works fine on two other servers (development and testing servers). The following code generates an 'Unspecified Error' in the Exception.Message. Quote: http://stackoverflow.com/questions/96150/oledbconnection-open-generates-unspecified-error System.Data.OleDb.OleDbConnection x = new System.Data.OleDb.OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + location + ";Extended Properties='Excel 8.0;HDR=Yes;IMEX=1'"); try { x.Open(); } catch (Exception exp) { string errorEmailBody = " OpenExcelSpreadSheet() in Utilities.cs. " + exp.Message; Utilities.SendErrorEmail(errorEmailBody); } :End Quote The server's c:\\temp and c:\Documents and Settings\\aspnet\local settings\temp folder both give \aspnet full control. I believe that there is some kind of permissions issue but can't seem to find any difference between the permissions on the noted folders and the folder/directory where the Excel file is uploaded. The same location is used to save the file and open it and the methods do work on my workstation and two web servers. Windows 2000 SP4 servers. c# debugging connection-string xls oledbconnection share|improve this question edited Nov 18 '15 at 16:11 pnuts 33.9k63870 asked Sep 18 '08 at 19:41 Mike Smith 19113 add a comment| 6 Answers 6 active oldest votes up vote 3 down vote While the permissions issue may be more common you can also encounter this error from Windows file system/Access Jet DB Engine connection limits, 64/255 I think. If you bust the 255 Access read/write concurrent connections or the 64(?) connection limit per process you can get this exact same error. At least I've come across that in an application where connections were being continually created and never properly closed. A simple Conn.close(); dropped in and life was good.
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