【Mysql】忘记Root密码后如何不影响数据进行重置密码

方法一：通用方法--启动时跳过权限表

1> 停止数据库

以管理员方式打开cmd！！

C:\Users\Administrator>net stop mysql

MySQL 服务正在停止..

MySQL 服务已成功停止。

2> 启动时跳过权限表

mysqld --console --skip-grant-tables --shared-memory

C:\Users\Administrator>mysqld --console --skip-grant-tables --shared-memory

注意：不要关闭终端

3> 重开新的终端（再开一个终端），登录并设置新密码

PS C:\Users\Administrator> mysql -uroot -p

Enter password: 直接敲回车键

mysql> flush privileges;

mysql> alter user root@localhost identified by '123456'; //重置密码

4> 退出MySQL，关闭第一个终端，正常启动服务。

mysql> \q

PS C:\Users\Administrator> net start mysql

MySQL 服务正在启动 ..

MySQL 服务已经启动成功。

PS C:\Users\Administrator> mysql -uroot -p123456

mysql: [Warning] Using a password on the command line interface can be insecure.

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

Your MySQL connection id is 8

Server version: 8.0.36 MySQL Community Server - GPL

Copyright (c) 2000, 2024, Oracle and/or its affiliates.

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> \q

Bye

方法二：参考官方文档

1> 停止服务

PS C:\Users\Administrator> net stop mysql

MySQL 服务正在停止.

MySQL 服务已成功停止。

2> 创建一个文本文件到mysql文件夹里，保存为 mysql_init.txt ，内容如下：

ALTER USER 'root'@'localhost' IDENTIFIED BY '123456';

3> 启动同时使用上一步文件修改密码

要求管理员身份打开cmd来运行命令，暂时不要关闭终端：

C:\Users\Administrator>mysqld --init-file= F:\mysql\mysql-8.0.36-winx64\mysql_init.txt

（具体路径复制粘贴）

4> 打开另一个终端，登录测试

PS C:\Users\Administrator> mysql -uroot -p123456

mysql: [Warning] Using a password on the command line interface can be insecure.

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

Your MySQL connection id is 9

Server version: 8.0.36 MySQL Community Server - GPL

Copyright (c) 2000, 2024, Oracle and/or its affiliates.

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> \q

Bye

5> 关闭第一个终端，正常启动服务。

C:\Users\Administrator>net start mysql

MySQL 服务正在启动 ..

MySQL 服务已经启动成功。

C:\Users\Administrator>mysql -uroot -p123456

mysql: [Warning] Using a password on the command line interface can be insecure.

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

Your MySQL connection id is 8

Server version: 8.0.36 MySQL Community Server - GPL

Copyright (c) 2000, 2024, Oracle and/or its affiliates.

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> \q

Bye

6> 删除文件 mysql_init.txt