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HomeDatabaseMysql Tutorialwindows中忘记mysql root密码怎么恢复

windows中忘记mysql root密码怎么办,经常有朋友都会把自己服务器上的mysql密码忘了,下面我来介绍恢复mysql root密码的方法。

 

解决办法

方法一

1、停止MYSQL服务

开始->运行 cmd,在命令提示符窗口输入 net stop mysql

2、切换当前目录到mysql安装路径下的bin目录

如: cd C:mysql5bin

3、设定无密码登录

执行命令 mysqld-nt --skip-grant-tables

 
注意:1)确保当前目录是mysql的bin目录;2)如果提示'mysqld-nt' 不是内部或外部命令,也不是可运行的程序或批处理文件,请下载mysqld-nt.rar。

4、登录mysql

新开一个命令提示符窗口,切换当前目录到mysql的bin目录,输入 mysql -u root -p

 
空密码登录到mysql。

5、设置root的新密码

输入update mysql.user set password=PASSWORD("newpassword") where User="root";

6、刷新权限表并退出

输入flush privileges;quit;

7、结束mysqld-nt.exe进程

打开任务管理器,结束mysqld-nt.exe进程。


方法二

有可能你的系统没有 safe_mysqld 程序(比如我现在用的 ubuntu操作系统, apt-get安装的mysql) , 下面方法可以恢复
1. 停止mysqld;
   /etc/init.d/mysql stop
(您可能有其它的方法,总之停止mysqld的运行就可以了)
2. 用以下命令启动MySQL,以不检查权限的方式启动;

 代码如下 复制代码
mysqld --skip-grant-tables &

3. 然后用空密码方式使用root用户登录 MySQL;

 代码如下 复制代码
mysql -u root

4. 修改root用户的密码;

 代码如下 复制代码
mysql> update mysql.user set password=PASSWORD('newpassword') where User='root';
mysql> flush privileges;
mysql> quit

重新启动MySQL
/etc/init.d/mysql restart
就可以使用新密码 newpassword 登录了。


另外记录一下忘记mysql 密码的取回方法


如果 MySQL 正在运行,
首先杀之: killall -TERM mysqld(如果是windows,直接调出进程管理器,结束之)
以安全模式启动 MySQ:

 代码如下 复制代码
/usr/bin/safe_mysqld --skip-grant-tables &
(windows 下 mysql安装所以盘/mysql/bin/safe_mysqld --skip-grant-tables )

就可以不需要密码就进入 MySQL 了.
然后就是

 代码如下 复制代码
>use mysql
>update user set password=password("new_pass") where user="root";
>flush privileges;

重新杀 MySQL,用正常方法启动 MySQL.

这个方法没尝试过大家可尝试一下

使用mysqladmin,这是前面声明的一个特例。

 代码如下 复制代码
mysqladmin -u root -p password mypasswd

输入这个命令后,需要输入root的原密码,然后root的密码将改为mypasswd。把命令里的root改为你的用户名,你就可以改你自己的密码了。

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