洋芋的博客

数据库在表设计中如下表所示：`updated_time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,说明updated_time非空，同时在进行更新操作时自动生成CURRENT_TIMESTAMP类型的时间进行存储。由于数据库系统时间配置没有进行专门设置：show variables like'%time_zone';Variable_name Value time_zon

最近公司两个服务都在晚上执行定时任务中途出现同样wait_timeout问题：org.hibernate.engine.jdbc.spi.SqlExceptionHelper : The last packet successfully received from the server was 257,760 milliseconds ago. The last packet sent successfully to the server was 257,762 milliseconds ago