Since installing SQL Server SP3 in production, we are seeing a lot of DB Connection timeouts. Found several articles pointing to enabling IPV6 on the database server.
Does SP3 require IPV6 to be enabled? Due to Security, we were told we must disable IPV6, and use only IPV4.
Below is an example of the errors we are seeing.
An exception was handled, but could not be added to the error log in the database. The following values are associated with the error.
ScopeID=8ae2fa6a-4e85-4bd8-9679-c1ce8ad8cd38
UserID=984a9529-d747-40ec-9a72-ea03067f3fa9
SessionID=ommsk02gwxzytbh40r5snhj4
Process= ()
Error Date=2/19/2016 3:56:02 PM
Error Text=Connection Timeout Expired. The timeout period elapsed while attempting to consume the pre-login handshake acknowledgement. This could be because the pre-login handshake failed or the server was unable to respond back in time. The
duration spent while attempting to connect to this server was - [Pre-Login] initialization=14742; handshake=12312;
Error Inner Text=System.ComponentModel.Win32Exception (0x80004005): The wait operation timed out
Error Stack Trace= at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal&
connection); at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection); at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection
owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection); at System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection
outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions); at System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry); at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1
retry); at System.Data.SqlClient.SqlConnection.Open(); at App.Web.AppForms.MainMenu.OpenConnection(); at App.Web.AppWebForms.MainMenu.Page_Load(Object sender, EventArgs e); at System.Web.UI.Control.OnLoad(EventArgs
e); at System.Web.UI.Control.LoadRecursive(); at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
TransactionInfo=
Error Type=EXCEPTION
Error Source=.Net SqlClient Data Provider
Any ideas?
DJ