使用mysql5.5,突然root密碼忘記,怎麼也登錄不了,很急人,該怎麼解決呢?下面通過本文給大家介紹mysql5.5忘記root密碼的解決辦法,需要的朋友參考下吧
方法一:
操作系統:windows操作系統,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 服務正在停止.
MySQL 服務已成功停止。
C:\Program Files\MySQL\MySQL Server 5.5\bin>mysqld --skip-grant-tables
你會看到窗口光標在下一行的第一個位置閃爍,這說明已經啟動了,不需要管。
新建一個命令行窗口同樣進入到e:\mysql5.5\bin目錄,啟動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
看看那任務管理器中是否有mysqld.exe進程,如有,kill .
C:\Program Files\MySQL\MySQL Server 5.5\bin>net start mysql
MySQL 服務正在啟動 .
MySQL 服務已經啟動成功。
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:
操作系統:windows操作系統,xp或win7.
1.dos命令行窗口 進入e:\mysql5.5\bin ,停止mysql 服務
e:\mysql5.5\bin>net stop mysql
注意:看看那任務管理器中是否有mysqld.exe進程,如有,kill them all.
2. 以不檢查權限的方式啟動mysql
e:\mysql5.5\bin>mysqld.exe --skip-grant-tables
你會看到窗口光標在下一行的第一個位置閃爍,這說明已經啟動了,不需要管。
3. 新建一個命令行窗口同樣進入到e:\mysql5.5\bin目錄,啟動mysql
e:\mysql5.5\bin>mysql
4. 修改root密碼
mysql>use mysql mysql>update user set password=PASSWORD('new_password') where user='root'; mysql>flush privileges; mysql>quit
5. 看看那任務管理器中是否有mysqld.exe進程,如有,kill them all.
6. 重啟mysql,就可以用你設置新密碼登陸
e:\mysql5.5\bin>net start mysql e:\mysql5.5\bin>mysql -u root -pnew_password that's all .