c3p0连接错误 An attempt by a client to checkout a Connection has timed out.

问题http://chembo.iteye.com/blog/905233

mysql最大连接数设置

http://zhidao.baidu.com/link?url=8YXlt73Ktr6pRD_i3-oalvOEl9YvNVxK_xPuQ8z6HgGeNrNWURX_nn6c6QaOIQC-buoe7yNMBrh-mf8DkqVLaIH_D4RayvsSysWM_vt6WWm

http://www.111cn.net/sys/linux/45602.htm

原文：http://www.cnblogs.com/sj521/p/5640146.html