執行該命令需要一個開放且可用的連接。連接的當前狀態被破壞

Question

實體框架嚴重問題& sql server 2008，請大家幫忙!! 系統在本地運行良好，但在生產服務器的負載測試期間，我們有超過10個用戶的錯誤。

得到此錯誤後，用戶無法再登錄。

'/'應用程序中的服務器錯誤。 執行該命令需要一個開放且可用的連接。連接的當前狀態已中斷。

這裏是SQL Server日誌

3005 
An unhandled exception has occurred. 

9/13/2011 3:41:14 AM 

9/13/2011 7:41:14 AM 

73b3f335f4de45fa8c4ef2f22809300b 

4911 

482 

0 

/LM/W3SVC/14/ROOT-3-129603711416579333 

Full 

/

E:\WebSites\Medtrack2.0\ 

COLO-VDEV01 
15864 

w3wp.exe 

NT AUTHORITY\NETWORK SERVICE 

InvalidOperationException 

Execution of the command requires an open and available connection. The connection's current state is broken. at System.Data.Objects.ObjectContext.EnsureConnection() at System.Data.Objects.ObjectQuery`1.GetResults(Nullable`1 forMergeOption) at System.Data.Objects.ObjectQuery`1.System.Collections.Generic.IEnumerable.GetEnumerator() at System.Linq.Enumerable.FirstOrDefault[TSource](IEnumerable`1 source) at System.Linq.Queryable.FirstOrDefault[TSource](IQueryable`1 source) at Dashboard.Page_Load(Object sender, EventArgs e) at System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) 

http://38.127.112.89:9010/Dashboard.aspx 

/Dashboard.aspx 

119.148.4.83 

JMiranda 

True 

Forms 

NT AUTHORITY\NETWORK SERVICE 

11 

NT AUTHORITY\NETWORK SERVICE 

False 

at System.Data.Objects.ObjectContext.EnsureConnection() at System.Data.Objects.ObjectQuery`1.GetResults(Nullable`1 forMergeOption) at System.Data.Objects.ObjectQuery`1.System.Collections.Generic.IEnumerable.GetEnumerator() at System.Linq.Enumerable.FirstOrDefault[TSource](IEnumerable`1 source) at System.Linq.Queryable.FirstOrDefault[TSource](IQueryable`1 source) at Dashboard.Page_Load(Object sender, EventArgs e) at System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) 

有什麼想法？

Answer 1

看看這個問題的答案類似的問題可以幫助你：

EF recovery from invalidoperationexception caused by server being down

或者這一個：

Exception: Execution of the command requires an open and available connection. The connection's current state is broken.

Answer 2

你是如何存儲的ObjectContext？從EF的角度來看，您必須確保每個用戶都獲得對ObjectContext的唯一引用。爲此，我通過將它存儲在HttpContext.Current.Items集合中來共享ObjectContext。有關Items集合的更多信息，請參閱以下內容：http://abhijitjana.net/2011/01/14/when-we-can-use-httpcontext-current-items-to-stores-data-in-asp-net/