問題：SQL Azure連接中斷。重新連接並訪問實體對象後，發生錯誤

Question

連接到網站並保持閒置30分鐘，然後試圖訪問實體我收到以下錯誤。

實體框架執行命令定義時發生錯誤。詳情請參閱內部例外。內部異常{「無效的對象名稱dbo.TableName'。」}

示例代碼

Static Class Azure 
{ 
public static CrmEntities ConnectCustomerEntity() 
    { 
     CrmEntities customerEntity = null; 
     policy.ExecuteAction(() => 
      { 
       try 
       { 
        var shardId = GetShardId(); 

        customerEntity = new CrmEntities(ConnectionStringCustomerDB()); 
        string federationCmdText = @"USE FEDERATION Customer_Federation(ShardId =" + shardId + ") WITH RESET, FILTERING=ON"; 

        customerEntity.Connection.Open();      
        customerEntity.ExecuteStoreCommand(federationCmdText); 
       } 
       catch (Exception e) 
       { 
        customerEntity.Connection.Close(); 
        SqlConnection.ClearAllPools(); 
        //throw e; 
       } 
      }); 
     return customerEntity; 
    } 

public static CrmEntities DBConnect(CrmEntities _db) 
    { 
    try{ 
     if (_db == null) 
      _db = Azure.ConnectCustomerEntity(); 
     if ((_db.Connection.State == ConnectionState.Broken) || (_db.Connection.State == ConnectionState.Closed)) 
     {    
      SqlConnection.ClearAllPools(); 
      _db = Azure.ConnectCustomerEntity(); 
     } 
    else 
     { //This code is to find out any issues in connection pool database connection 
     string sqlCmdText = @"select top 1 Id from Project"; 
      _db.ExecuteStoreCommand(sqlCmdText); 
     } 
     } 
    catch (Exception ex) 
     { 
      _db.Connection.Close(); 
      SqlConnection.ClearAllPools(); 
      _db = Azure.ConnectCustomerEntity(); 
     } 
     return _db; 
} 

} 

的mvc控制器。下面的代碼我得到這種異常，30分鐘後

public class FilterController : Controller 
{ 
public ActionResult GetFilters(string entityName,string typeFilter) 
    { 
     _crmEntities=Azure.DBConnect(_db); 
     var query = _db.FilterFields.Where(filter => filter.TableId == tableId).ToList(); // Here I am getting that exception 
    } 
} 

我不知道，爲什麼我得到這個例外。我嘗試了所有可能性。沒什麼幫助。我真的很震驚。如果有人知道請告訴您的意見，從這種異常出來

在此先感謝。

Answer 1

我認爲你的會議超時。

嘗試增加會話超時：

http://msdn.microsoft.com/en-us/library/system.web.sessionstate.httpsessionstate.timeout.aspx