这篇文章主要为大家展示了“MySQL如何忘记root密码”，内容简而易懂，条理清晰，希望能够帮助大家解决疑惑，下面让小编带领大家一起研究并学习一下“MySQL如何忘记root密码”这篇文章吧。
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1、启动MySQL
[root@localhost ~]# mysqld_safe --skip-grant-tables &
2、登录MySQL
[root@localhost ~]# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.5.25a-log Source distribution
Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
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> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| allen |
| mysql |
| mytest |
| performance_schema |
| test |
+--------------------+
6 rows in set (0.00 sec)
mysql> use mysql
Database changed
mysql> update user set password=PASSWORD("123456") where user="root"; --修改root密码
Query OK, 4 rows affected (0.00 sec)
Rows matched: 4 Changed: 4 Warnings: 0
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
mysql> quit
Bye
3、重新使用密码登录
[root@localhost ~]# mysql -uroot -p123456
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.5.25a-log Source distribution
Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
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> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| allen |
| mysql |
| mytest |
| performance_schema |
| test |
+--------------------+
6 rows in set (0.00 sec)
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