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

本文转载自  查看原文  2016-07-04 13:11  1695    spring

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

 

 

修改配置文件最大连接数小于mysql最大连接数


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猜您在找 配置c3p0连接池出现错误：java.sql.SQLException: An attempt by a client to checkout a Connection has timed c3p0出现 An attempt by a client to checkout a Connection has timed out Could not obtain connection to query metadata : An attempt by a client to checkout a Connection has timed out.] log报错： Caused by: java.sql.SQLException: An attempt by a client to checkout a Connection has timed out. 报错： Could not open JDBC Connection for transaction; nested exception is java.sql.SQLException: An attempt by a client to checkout a Connection has timed out. 数据库连接超时 mysql数据库连接出问题，提示超时 java.sql.SQLException: An attempt by a client to checkout a Connection has timed out.解决办法 Caused by: org.hibernate.exception.GenericJDBCException: Could not open connection；Caused by: java.sql.SQLException: An attempt by a client to checkout a Connection has timed out. 一次c3p0连接池连接异常错误的排查 c3p0连接池获得的Connection执行close方法后是否真的销毁Connection对象？ Tomcat配置连接c3p0连接池
 
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