1)设置mysql的全局方法,设置完立刻重启mysql
vim /etc/my.cnf
[mysqld]
interactive_timeout=1800
wait_timeout=1800
- 全局永久生效现在数据库中设置,在修改文件等需要重启数据库的时候在重启mysql
set global interactive_timeout = 1800;
set global wait_timeout = 1800;
–查看
show global variables like “wait_timeout”;
- 回话变量临时修改 ,只适合当前的回话,退出回话还原
set wait_timeout=1200;
set session wait_timeout=1200;
set session interactive_timeout=1200;