MySql5.5忘记root密码怎么办_Mysql

使用mysql5.5，突然root密码忘记，怎么也登录不了，很急人，该怎么解决呢？下面通过本文给大家介绍mysql5.5忘记root密码的解决办法，需要的朋友参考下吧

方法一：

操作系统：windows操作系统，xp或win7.

C:\Users\Administrator>cd C:\Program Files\MySQL\MySQL Server 5.5\bin
C:\Program Files\MySQL\MySQL Server 5.5\bin>net stop mysql

MySQL 服务正在停止.

MySQL 服务已成功停止。

C:\Program Files\MySQL\MySQL Server 5.5\bin>mysqld --skip-grant-tables

你会看到窗口光标在下一行的第一个位置闪烁，这说明已经启动了，不需要管。

新建一个命令行窗口同样进入到e:\mysql5.5\bin目录，启动mysql

				?

									C:\Program Files\MySQL\MySQL Server 5.5\bin>mysql

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

									Your MySQL connection id is 1

									Server version: 5.5.36 MySQL Community Server (GPL)

									Copyright (c) 2000, 2014, 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 |

									| mysql |

									| performance_schema |

									| test |

									+--------------------+

									4 rows in set (0.00 sec)

									mysql> use mysql;

									Database changed

									mysql> update user set password=PASSWORD('oracle') where user='root';

									Query OK, 2 rows affected (0.00 sec)

									Rows matched: 2 Changed: 2 Warnings: 0

									mysql> flush privileges;

									Query OK, 0 rows affected (0.01 sec)

									mysql> quit

									Bye

看看那任务管理器中是否有mysqld.exe进程，如有，kill .

MySql5.5忘记root密码怎么办

C:\Program Files\MySQL\MySQL Server 5.5\bin>net start mysql

MySQL 服务正在启动 .

MySQL 服务已经启动成功。

				?

									C:\Program Files\MySQL\MySQL Server 5.5\bin>mysql -uroot -poracle

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

									Your MySQL connection id is 1

									Server version: 5.5.36 MySQL Community Server (GPL)

									Copyright (c) 2000, 2014, 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>

方法二：

操作系统：windows操作系统，xp或win7.

　　1.dos命令行窗口进入e:\mysql5.5\bin ,停止mysql 服务

　　e:\mysql5.5\bin>net stop mysql

　　注意:看看那任务管理器中是否有mysqld.exe进程，如有，kill them all.

　　2. 以不检查权限的方式启动mysql

　　e:\mysql5.5\bin>mysqld.exe --skip-grant-tables

　　你会看到窗口光标在下一行的第一个位置闪烁，这说明已经启动了，不需要管。

　　3. 新建一个命令行窗口同样进入到e:\mysql5.5\bin目录，启动mysql

　　e:\mysql5.5\bin>mysql

　　4. 修改root密码

				?

									mysql>use mysql

									　　mysql>update user set password=PASSWORD('new_password') where user='root';

									　　mysql>flush privileges;

									　　mysql>quit

　　5. 看看那任务管理器中是否有mysqld.exe进程，如有，kill them all.

　　6. 重启mysql，就可以用你设置新密码登陆

				?

									e:\mysql5.5\bin>net start mysql

									　　e:\mysql5.5\bin>mysql -u root -pnew_password 

									　　that's all .

MySql5.5忘记root密码怎么办

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