我使用最新的MySQL版本...在我的java应用程序中使用命名管道，我开始连续20次收到以下错误：
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at ......
at ......
at ......
at ......
Caused by: java.io.FileNotFoundException: All pipe instances are busy
... 4 more
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at ......
at ......
at ......
at ......
Caused by: java.io.FileNotFoundException: All pipe instances are busy
... 4 more
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at ......
at ......
at ......
at ......
Caused by: java.io.FileNotFoundException: All pipe instances are busy
... 4 more
MySQL服务器处于活动状态并通过命令行和PHP正常工作。我正在使用Windows 7旗舰版。这个java异常的原因是什么？如何解决这个问题？
谢谢。