MySQL修改密码和忘记ROOT密码

1、关闭数据库

脚本：[root@mysql etc]# service mysql stop

2、使用脚本： mysqld_safe --skip-grant-tables 启动数据库

使用/usr/bin/mysqld_safe --skip-grant-tables&启动数据库

3、使用空密码进入数据库（mysql命令后直接回车）

[root@mysql ~]# mysql

Welcome to the MySQL monitor. Commands end with ; or g.

Your MySQL connection id is 3

Server version: 5.6.20-enterprise-commercial-advanced MySQL Enterprise Server - Advanced Edition (Commercial)

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

mysql>

4、使用UPDATE语句修改ROOT密码

mysql> UPDATE mysql.user SET

-> PASSWORD=PASSWORD('root')

-> where

-> User='root' AND Host='localhost';

5、关闭数据库并重新以正常方式启动数据库

[root@mysql ~]# service mysql restart;

Shutting down MySQL.. SUCCESS!

Starting MySQL.. SUCCESS!

[root@mysql ~]# mysql

ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)

[root@mysql ~]# mysql -p

Enter password: