超时时间已到。在Azure SQL上完成操作之前经过的超时时间

Question

我需要在global.asax应用程序启动事件的Windows Azure上的Windows上创建一个sql数据库，但是出现此错误：

Timeout expired.  The timeout period elapsed prior to completion of the operation or the server is not responding.  This failure occurred while attempting to connect to the routing destination. The duration spent while attempting to connect to the original server was - [Pre-Login] initialization=296; handshake=324; [Login] initialization=0; authentication=1; [Post-Login] complete=94;

我的代码如下：

   private void SetupSSM() {
            SqlConnectionStringBuilder connStrBldr = new SqlConnectionStringBuilder
            {
                UserID = SettingsHelper.AzureUsernamedb,
                Password = SettingsHelper.AzurePasswordDb,
                ApplicationName = SettingsHelper.AzureApplicationName,
                DataSource = SettingsHelper.AzureSqlServer
            };

            bool created=DbUtils.CreateDatabaseIfNotExists(connStrBldr.ConnectionString, SettingsHelper.Azureshardmapmgrdb);
            if(created)
            {
                Sharding sharding = new Sharding(SettingsHelper.AzureSqlServer, SettingsHelper.Azureshardmapmgrdb, connStrBldr.ConnectionString);
            }
        }



  public static bool CreateDatabaseIfNotExists(string connectionString, string databaseName)
        {
            using (SqlConnection conn = new SqlConnection(connectionString))
            {
                conn.Open();

                SqlCommand cmd = new SqlCommand(
                    string.Format("SELECT * FROM sys.databases WHERE [name]=\'{0:S}\'", databaseName),
                    conn);

                if (cmd.ExecuteScalar() == null)
                {
                    SqlCommand cmd2 = new SqlCommand(
                        string.Format("CREATE DATABASE [{0:S}];", databaseName),
                        conn);

                    cmd2.ExecuteNonQuery();

                    return true;
                }
                else
                    return false;
            }
        }

如何增加超时时间？是sql超时还是Web请求超时（由于sql没有响应）？

Answer 1

您可以通过执行以下操作来设置命令超时，您看到的错误是命令超时，很可能您的创建数据库花费的时间超过30秒，这是默认超时值。

例如，将超时设置为300秒cmd.CommandTimeout = 300

https://msdn.microsoft.com/zh-CN/library/system.data.sqlclient.sqlcommand.commandtimeout(v=vs.110).aspx