即使在创建Mysql时url中加入了autoReconnect=true参数,一但这个连接两次访问数据库的时间超出了服务器端wait_timeout的时间限制,还是会CommunicationsException: The last packet successfully received from the server was xxx milliseconds ago. 服务器端的参数可以用 show global variables like 'wait_timeout'; set glob
web应用中连接mysql数据库时控制台会出现这样的提示: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't se
bug回顾 : 想必大家在用MySQL时都会遇到连接超时的问题,如下图所示: ### Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was 47,795,922 milliseconds ago. The last packet sent successfully to the server was 47,7
由于使用阿里云服务器,使用mysql 每当周一的时候客户端首次连,总是报timeout connection 的错误 ,尝试了几个方法没有实际效果. 1.用网上说的URl上缀上autoReconnect=true jdbc:mysql://localhost:3306/oa?autoReconnect=true. 2.编辑mysql目录里的:my.cnf(windows下为my.ini), # The TCP/IP Port the MySQL Server will listen on