摘要： 运行环境：tomcat +mysql项目用到了hibernate3.0 c3po mysql的数据层组合，开发部署非常顺利，但每天早上访问应用都抛出 Could not open Hibernate session for transaction 异常，Caused by: com.mysql.jdbc.CommunicationsException: Communications link... 阅读全文

摘要： c3p0在hibernate连接配置 c3p0 配置 hibernate 连接池 hibernate.connection.provider_class＝net.sf.hibernate.connection.C3P0ConnectionProvider c3p0.minPoolSize＝3 c3p0.maxPoolSiz... 阅读全文