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Internal Net Framework Data Provider Error 12 Solution

SQL Server 2014 Express resources Windows Server 2012 resources Programs MSDN subscriptions Overview Benefits Administrators Students Microsoft Imagine Microsoft Student Partners ISV Startups TechRewards Events Community Magazine Forums Blogs Channel 9 Documentation APIs and reference Dev centers Samples Retired content We’re sorry. The content you requested has been removed. You’ll be auto redirected in 1 second. Ask a question Quick access Forums home Browse forums users FAQ Search related threads Remove From My Forums Answered by: Internal .Net FrameWork Data Provider Error 12. Data Platform Development > ADO.NET Managed Providers Question 0 Sign in to vote Hi, I am using .Net Framework 2.0. And for accessing data Oledb data provider. This is used in a multi-threaded windows service. I am getting the following error on a select query. The stack trace is as follows.Internal .Net Framework Data Provider error 12. at System.Data.ProviderBase.DbConnectionInternal.CreateReferenceCollection() at System.Data.ProviderBase.DbConnectionInternal.AddWeakReference(Object value, Int32 tag) at System.Data.OleDb.OleDbConnection.AddWeakReference(Object value, Int32 tag) at System.Data.OleDb.OleDbCommand.ExecuteReaderInternal(CommandBehavior behavior, String method) at System.Data.OleDb.OleDbCommand.ExecuteScalar() at File_Transfer.clsDataAccessObject.GetCellValue(String strSql) Saturday, September 16, 2006 6:47 AM Reply | Quote Answers 1 Sign in to vote Errors like this usually occur due to multithreaded access of connections. You mention that this is a multi-threaded windows service. How do you manage your OleDbConnections? Are they declared locally within the methods where you need a connection, or are you sharing them at a broader scope? The OleDbConnection class is not threadsafe, so make sure you do not access the same connection from multiple threads at the same time. It's a good idea not to share connections across threads at all, even if you intend to synchronize access to them. It's better to just use them at the smallest scope possible, opening when you need them and closing when you are done. OLE DB connection pooling will take care of reusing the connections internally

ASP.NET Community Standup Forums Help Home/ASP.NET Forums/Data Access/DataSource Controls - SqlDataSource, ObjectDataSource, etc/System.InvalidOperationException: Internal .Net Framework Data Provid... System.InvalidOperationException: Internal .Net Framework Data Provider error 12. [Answered]RSS 3 replies Last post Sep 25, 2010 05:14 AM by manesh67 ‹ Previous Thread|Next Thread › Print Share Twitter Facebook Email Shortcuts Active Threads Unanswered Threads Unresolved Threads Support Options Advanced Search Reply sweetypie Member 3 Points 34 Posts System.InvalidOperationException: Internal .Net Framework Data Provider error 12. Mar 06, 2008 08:13 AM|sweetypie|LINK Hi, I have created https://social.msdn.microsoft.com/Forums/en-US/0859dee9-6a1c-484c-9bcb-41fca3c0b938/internal-net-framework-data-provider-error-12?forum=adodotnetdataproviders an application in which there are few forms. Each form has fields which are linked to a backend table/tables. My application is supposed to be accessed by multiple users concurrently. I ran a test where I created a class file in windows application and i ran a for loop in it to call the url of my application. I wanted http://forums.asp.net/t/1229756.aspx?System+InvalidOperationException+Internal+Net+Framework+Data+Provider+error+12+ to test the effect of firing around 200 queries to my query engine. The test code is: namespace MachineGun { static class Program

{ ///

/// The main entry point for the application.

///

[STAThread] static void Main()

{ try

{ for (int i = 0; i < 20; i++) { System.Diagnostics.Process.Start("iexplore.exe", "http://192.168.0.1/Application/Entrypoint/EntryPoint.aspx"); } } catch (Exception e) { MessageBox.Show("error in url : " + e.Message); } } } } This code runs and opens 20 browsers that shows the query output results. The problem is when i do this, some browsers display proper results but in some I get an error. When I checked the log file , I found the following trace: System.InvalidOperationException: Internal .Net Framework Data Provider error 12. at System.Data.ProviderBase.DbConnectionInternal.CreateReferenceCollection() at System.Data.ProviderBase.DbConnectionInternal.AddWeakReference(Object value, Int32 tag) at System.Data.SqlClient.SqlConnection.AddWeakReference(Object value, Int32 tag) at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString) at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior run

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Framework Data Provider error 1... rated by 0 users This post has 6 Replies | 1 Follower denpsia Phillipines Since 5/6/2005 Posts 653 Reputation 7,224 Reply Dennis Sia (denpsia) Posted: 9/6/2006 7:27 PM rated by 0 users Hi everybody,Is there anybody can tell me what this error meant? Where is source of error? There is a class library DLL created by another person. I used C# (VS 2005 Professional Edition) and SQL Server 2005 Express Edition and also used Visual SourceSafe 6.0.In this class,There is a constructor and destructor in the destructor it calls the CloseConnection() method where the error occurs.Code:private void CloseConnection() {if (m_Connection != null) {try {// Check if connection is already closed, if not, then close itif (m_Connection.State != ConnectionState.Closed)m_Connection.Close(); <<---Error Occurs here// Dispose the connection object and set it to null to release resources used by the objectm_Connection.Dispose();m_Connection = null;}catch {throw;}}}***RESOLVED*** I created new class to do same function without using destructor to close connection. I am puzzled why this class works with version 1.1 and SQL 2000...Confuse?:confused:denpsia -----------------------------------------------------------------------------------------Please make sure if problem in your post is solved, add Resolved icon and/or add "[Resolved]" in your title on first post. Thanks. | Post Points: 65 travis_abrahamson California Since 3/30/2005 Posts 2,223 Reputation 20,464 Reply Travis Abrahamson (travis_abrahamson) replied on 9/6/2006 8:21 PM rated by 0 users I would check the Connection StateThis code only checks to see if the State is Not ClosedHowever, you still have Broken, Connecting, Executing, Fetching, and Open. I'm not 100% sure but I think there might be a problem with trying to close a connection that ha

 

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