MySQL怎样忘记root密码

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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)

以上是“MySQL如何忘记root密码”这篇文章的所有内容，感谢各位的阅读！

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