SQL Server connection ado.net connection

http://blogs.msdn.com/b/sql_pfe_blog/archive/2013/10/08/connection-pooling-for-the-sql-server-dba.aspx

http://blogs.msdn.com/b/angelsb/

Ado.net 2.0 Mars Session Pooling. (aka stuff you don't need to know.)

http://blogs.msdn.com/b/angelsb/archive/2005/01/13/352718.aspx

Data Access Tracing in SQL Server 2012

https://msdn.microsoft.com/en-us/library/hh880086.aspx

https://blogs.msdn.microsoft.com/psssql/2014/02/07/cant-connect-to-sql-when-provisioning-a-project-app-in-sharepoint/

Using Multiple Commands with MARS

https://msdn.microsoft.com/en-us/library/h32h3abf(v=vs.110).aspx

https://blogs.msdn.microsoft.com/psssql/2013/10/22/sql-connection-pool-timeout-debugging/

 https://blogs.msdn.microsoft.com/psssql/2009/02/10/how-to-troubleshoot-leaked-sqlconnection-objects-net-2-0-part-2/

https://blogs.msdn.microsoft.com/psssql/2009/02/05/how-to-troubleshoot-leaked-sqlconnection-objects-net-2-0-part-1/

http://blogs.msdn.com/b/ialonso/archive/2012/06/04/how-to-determine-whether-a-connection-is-pooled-or-nonpooled.aspx

 

https://blogs.msdn.microsoft.com/psssql/2010/12/29/how-it-works-error-18056-the-client-was-unable-to-reuse-a-session-part-2/

https://blogs.msdn.microsoft.com/psssql/2010/08/03/how-it-works-error-18056-the-client-was-unable-to-reuse-a-session-with-spid-which-had-been-reset-for-connection-pooling/

 

https://blogs.msdn.microsoft.com/psssql/2008/12/12/how-it-works-sql-trace-and-mars-connections/

 http://www.cnblogs.com/developersupport/p/casestudy-sqlexception.html

http://www.cnblogs.com/developersupport/archive/2013/05/28/Dump-SQLConnection.html

https://blogs.msdn.microsoft.com/psssql/2008/02/12/how-it-works-sql-server-2005-connection-and-task-assignments/

 

http://blogs.msdn.com/b/spike/archive/2012/05/21/quot-system-invalidoperationexception-timeout-expired-the-timeout-period-elapsed-prior-to-obtaining-a-connection-from-the-pool-quot.aspx

http://blogs.msdn.com/b/remis_world/archive/2012/06/25/how-to-diagnose-sqlconnection-leaks.aspx

http://blogs.msdn.com/b/rihamselim/archive/2014/06/24/debugging-error-system-invalidoperationexception-timeout-expired-the-timeout-period-elapsed-prior-to-obtaining-a-connection-from-the-pool.aspx

 

Udl

http://blogs.msdn.com/b/farukcelik/archive/2007/12/31/basics-first-udl-test.aspx