java - Can't find file: './performance_schema/session_variables.frm'
1.刚在linux上安装了 mysql，接着用tomcat部署java web项目，启动后出现下面错误。已经设置了访问文件的权限，即使弄成777都不行。
java.sql.SQLException: Can't find file: './performance_schema/session_variables.frm' (errno: 13 - Permission denied)
