使用最大池大小时发生错误 [英] Error occurred while working with max pool size
问题描述
在使用ADO.Net C＃连接SQL数据库时，我在使用时会随机获得异常同时在线程中执行数千个数据，例如
In connectivity of SQL database using ADO.Net C#, I am getting exceptions randomly while working with thousands of data simultaneously which is being executed in thread such as
-
与服务器成功建立连接，但在登录前握手期间发生错误。（提供者：SSL提供者，错误：0 - 等待操作超时。）
-
A connection was successfully established with the server, but then an error occurred during the pre-login handshake. (provider: SSL Provider, error: 0 - The wait operation timed out.)
由于登录前连接初始化过程中的错误，客户端无法建立连接。可能的原因包括：客户端尝试连接到不受支持的SQL Server版本;服务器是忙于
接受新连接;或者服务器上存在资源限制（内存不足或允许的最大连接数）。（提供者：TCP提供者，错误：0 - 远程主机强制关闭现有连接。 ）
The client was unable to establish a connection because of an error during connection initialization process before login. Possible causes include the following: the client tried to connect to an unsupported version of SQL Server; the server was too busy to accept new connections; or there was a resource limitation (insufficient memory or maximum allowed connections) on the server. (provider: TCP Provider, error: 0 - An existing connection was forcibly closed by the remote host.)
>
Timeout expired。在从池中获取连接之前已经过了超时时间。这可能是因为所有池连接都在使用中并且达到了最大池大小。
Timeout expired. The timeout period elapsed prior to obtaining a connection from the pool. This may have occurred because all pooled connections were in use and max pool size was reached.
我的连接字符串为
My connection string is as
<add name="ConnDBString" connectionString="datasource;Initial Catalog=dbname;pooling=true;connection lifetime=120;Max Pool Size=1000" providerName="System.Data.SqlClient"/>
在参考其他问题时，我优化了我的连接建立代码，如下所示
In reference of other questions I have optimized my code for connection establishment like below
public static int ExecuteNonQuery(string commandText, CommandType commandType, ref List<SqlParameter> parameters)
{
int result = 0;
if (!string.IsNullOrEmpty(commandText))
{
using (var cnn = new SqlConnection(Settings.GetConnectionString()))
{
var cmd = cnn.CreateCommand();
cmd.CommandText = commandText;
cmd.CommandType = commandType;
cmd.CommandTimeout = Convert.ToInt32(Settings.GetAppSetting("CommandTimeout") ?? "3600");
cmd.Parameters.AddRange(parameters.ToArray());
cnn.Open();
result = cmd.ExecuteNonQuery();
cmd.Dispose();
}
}
return result;
}
请指教。
Please advise.
推荐答案
Hi PinkiPatra，
Hi PinkiPatra,
根据您的错误消息，我建议您查看一下这篇文章，它解释了导致此错误的可能原因：
According to your error message, I would suggest that you could take a look at this article which explains possible causes for this error:
http://blogs.msdn.com/ b /穗/存档/ 2009/04/16 / A时，送的请求到所述服务器提供商-TCP-提供商传输 - 电平 - 误差已-发生-误差-0-AN-现有连接被强制关闭 - 远程主机.aspx
这篇文章解释了安装"需要"的问题; .NET Framework 4的可靠性更新1"：
http://blogs.msdn.com/b/spike/archive/2009/04/16/a-transport-level-error-has-occurred-when-sending-the-request-to-the-server-provider-tcp-provider-error-0-an-existing-connection-was-forcibly-closed-by-the-remote-host.aspx
And this article, which explains the need for installing "Reliability Update 1 for the .NET Framework 4":
http://blogs.msdn.com/b/adonet/archive/2011/11/05/minimizing-connection-pool-errors-in-sql-azure.aspx
Microsoft .NET Framework 4可靠性更新1（KB2533523）的下载页面
http://blogs.msdn.com/b/adonet/archive/2011/11/05/minimizing-connection-pool-errors-in-sql-azure.aspx
Download page for Microsoft .NET Framework 4 Reliability Update 1 (KB2533523)
http://www.microsoft.com/en-us/download/details.aspx?id=27014
此外，如果问题仍然存在，请您分享更多信息，例如相关的开发环境，以及如何重现问题的步骤。
In addition, if the issue still exists, could you please share a bit more information, such as related developing environment, the steps about how to reproduce the issue on my side.
祝你好运，
张龙
这篇关于使用最大池大小时发生错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
