Mysql出现Table 'performance_schema.session_status' doesn't exist

1. 进入mysql的bin目录，在命令行下运行
   mysql_upgrade -u root -p –force
   然后重启mysql net stop mysql
   net start mysql

2. 在命令行下输入如下命令
   mysql -u {user} -p
   mysql> set @@global.show_compatibility_56=ON;
   或者在配置文件中 在/etc/my.cnf中：
   show_compatibility_56 = 1

详情参见:https://stackoverflow.com/questions/36746677/table-performance-schema-session-variables-doesnt-exist/36748816