自己遇到了这个问题,也找了很久才解决,就整理一下,希望对大家有帮助!
操作系统:WINDOWS-XP 系统
提示:
原来都好好的,今天开机上来提示上面的这个错误,重启 MySQL 还是不可以。
注意我这里的环境是 WINDOWS-XP 系统,LINUX 系统下的操作没有验证过,情况不清楚。
1. 管理员登陆系统,停止 MySQL 服务或者结束 MySQL 进程。
2. 启动 WINDOWS 的命令行窗口(即通常的 DOS 窗口:运行cmd),切换到你的 “MySQL\bin” 目录下。
例如我的是 “D:\Program Files\MySQL\MySQL Server 5.2\bin”,然后执行下面的粗体的命令:(注意你的 “my.ini” 位置)
Microsoft Windows XP [版本 5.1.2600]
(C) 版权所有 1985-2001 Microsoft Corp.
C:\Documents and Settings\Administrator>
C:\Documents and Settings\Administrator>d:
D:\Program Files\MySQL\MySQL Server 5.2\bin>
100608 9:04:12 [Note] mysqld: ready for connections.
Version: '5.2.0-falcon-alpha-community' socket: '' port: 3306 MySQL Community
Server (GPL)
100608 9:06:57 [Warning] Found invalid password for user: 'root@localhost'; Ign
oring user
只要出现上面信息,就说明 MySQL 已经起来了。
3. 不关闭此命令行窗口,重新打开一个命令行窗口,同样切到 “MySQL\bin” 目录下,然后执行下面的粗体的命令:
Microsoft Windows XP [版本 5.1.2600]
(C) 版权所有 1985-2001 Microsoft Corp.
C:\Documents and Settings\Administrator>
C:\Documents and Settings\Administrator>d:
D:\Program Files\MySQL\MySQL Server 5.2\bin>
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.2.0-falcon-alpha-community MySQL Community Server (GPL)
Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
然后,就是重新设置密码了!
mysql>
Query OK, 1 row affected (0.00 sec)
Rows matched: 1 Changed: 1 Warnings: 0
mysql>
Query OK, 0 rows affected (0.00 sec)
mysql>
Bye
4. 好了到此步,可以关闭第一个 DOS 窗口了(关闭服务)。打开系统服务控制窗口(控制面板--管理工具--服务),启动 MySQL 服务。
5. 在剩下的第二个 DOS 窗口中,用新的 ROOT 密码连接 MySQL。
D:\Program Files\MySQL\MySQL Server 5.2\bin>
Enter password: ****
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.2.0-falcon-alpha-community-nt MySQL Community Server (GPL)
Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
mysql> quit
Bye
至此,系统恢复 ROOT 用户管理权限完成,就是管理员密码的问题,奇怪,官方安装的时候不给出解决方法,貌似已存在很久了。。。

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