Question

我有一个连接mysql数据库服务器的C＃桌面应用程序。应用程序运行良好，但经过一段时间或某些天后，它会出现例外情况：

9/16/2013 12:56:55 PM: 9/16/2013 12:56:55 PM: Exception Occurred. Too many    
connections.StackTrace:    at MySql.Data.MySqlClient.MySqlStream.OpenPacket()
at MySql.Data.MySqlClient.NativeDriver.Authenticate411()
at MySql.Data.MySqlClient.NativeDriver.Authenticate()
at MySql.Data.MySqlClient.NativeDriver.Open()
at MySql.Data.MySqlClient.MySqlConnection.Open()
at ReckonHelper.MySqlDatabaseConnection.ConnectDB().

我不知道为什么会这样？

任何解决方案吗？

Answer 1

在编译完SQL语句后关闭连接。

使用try..catch..finally

 try
 {
   ....... 
   con.Open();
   //execute sql statement

  }
  catch (Exception ex)
  {
        throw ex;
        //throw or dispaly your exception
  }
 finally
 {
   con.close;
  }

在连接字符串中添加池属性
“Server = servername; Port = 3306; Database = dbname; Uid = username; Pwd = password; pooling = true; Allow Zero Datetime = True; Min Pool Size = 5; Max Pool Size = 100;”

mysql中的连接错误太多

1 个答案: