调度程序模块抛出＆＃34;最大池大小已达到＆＃34;

Question

我们的应用程序托管一个调度程序，每30秒对数据库执行一次调度，以便运行可用任务。但运行两个小时后，它开始给连接池耗尽错误。我们已经检查过我们已经关闭/放置了用于Mysql的所有连接。

• 应用程序连接池大小= 200
• 服务器Max_Connection参数= 1000
• 连接字符串服务器= localhost;数据库= mydb; Uid = test; Pwd = test;最小池 大小= 10;最大池大小= 200; ConnectionLifeTime = 100; DefaultCommandTimeout = 0;连接超时= 10;允许用户 变量= TRUE;

9/26/2017 12:00:14 AM:MySql.Data.MySqlClient.MySqlException (0x80004005): error connecting: 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.
   at MySql.Data.MySqlClient.MySqlPool.GetConnection()
   at MySql.Data.MySqlClient.MySqlConnection.Open()
   at com.ivp.rad.dal.RMYSQLDBProvider.GetConnection(String connectionString)
HResultDAL -> 0
Message -> error connecting: 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.
ExceptionSource -> MySql.Data
MachineName -> VM-asdf
CustomMessage -> MySql.Data.MySqlClient.MySqlException (0x80004005): error connecting: 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.