ERROR [08001] [IBM] SQL30081N A communication error has been detected. Communication protocol being used: "TCP/IP". Communication API being used: "SOCKETS". Location where the error was detected: "10.66.180.30". Communication function detecting the error: "connect". Protocol specific error code(s): "10061", "", "". SQLSTATE=08001
You have to download the driver directly from the IBM page ;)
There are a number of reasons for this error, your db2 is started? oyou have configured the node, the runtime client is properly installed?, check out this link for more.
来源：https://stackoverflow.com/questions/11762206/net-application-cannot-connect-to-db2-database