MySql5.5忘记root密码怎么办

 更新时间:2016年01月11日 14:53:36   投稿:mrr  
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

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 .


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 .

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