《Mysql实例MySql5.5忘记root密码怎么办》要点：
本文介绍了Mysql实例MySql5.5忘记root密码怎么办，希望对您有用。如果有疑问，可以联系我们。
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MYSQL入门
方法一：MYSQL入门
操作系统：windows操作系统,xp或win7.
MYSQL入门
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入门
MySQL 服务正在停止.
MYSQL入门
MySQL 服务已成功停止.MYSQL入门
C:\Program Files\MySQL\MySQL Server 5.5\bin>mysqld --skip-grant-tables
MYSQL入门
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.MYSQL入门
新建一个命令行窗口同样进入到e:\mysql5.5\bin目录,启动mysql
MYSQL入门
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 .
MYSQL入门
MYSQL入门
C:\Program Files\MySQL\MySQL Server 5.5\bin>net start mysql
MYSQL入门
MySQL 服务正在启动 .
MYSQL入门
MySQL 服务已经启动成功.
MYSQL入门
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：MYSQL入门
操作系统：windows操作系统,xp或win7.MYSQL入门
1.dos命令行窗口 进入e:\mysql5.5\bin ,停止mysql 服务MYSQL入门
e:\mysql5.5\bin>net stop mysqlMYSQL入门
注意:看看那任务管理器中是否有mysqld.exe进程,如有,kill them all.MYSQL入门
2. 以不检查权限的方式启动mysqlMYSQL入门
e:\mysql5.5\bin>mysqld.exe --skip-grant-tablesMYSQL入门
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.MYSQL入门
3. 新建一个命令行窗口同样进入到e:\mysql5.5\bin目录,启动mysqlMYSQL入门
e:\mysql5.5\bin>mysqlMYSQL入门
4. 修改root密码MYSQL入门
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.MYSQL入门
6. 重启mysql,就可以用你设置新密码登陆MYSQL入门
e:\mysql5.5\bin>net start mysql e:\mysql5.5\bin>mysql -u root -pnew_password that's all .
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