轉自:http://www.php100.com/html/webkaifa/database/Mysql/2011/0324/7781.html
mysql有時候忘記密碼了怎麼辦?我給出案例和說明!一下就解決了!
Windows下的實際操作如下
1.關閉正在啟動並執行MySQL。
2.開啟DOS視窗,轉到mysql\bin目錄。
3.輸入mysqld --skip-grant-tables斷行符號。如果沒有出現提示資訊,那就對了。
4.再開一個DOS視窗(因為剛才那個DOS視窗已經不能動了),轉到mysql\bin目錄。
5.輸入mysql斷行符號,如果成功,將出現MySQL提示符 >
6. 串連許可權資料庫>use mysql; (>是本來就有的提示符,別忘了最後的分號)
6.改密碼:> update user set password=password("520") where user="root"; (別忘了最後的分號)
7.重新整理許可權(必須的步驟)>flush privileges;
8.退出 > \q
9.登出系統,再進入,開MySQL,使用使用者名稱root和剛才設定的新密碼123456登陸。
第一步
C:\Documents and Settings\Administrator>cd D:\web\www.php100.com\Mysql\MySQL Se
rver5.5\bin
C:\Documents and Settings\Administrator>d:
D:\web\www.php100.com\Mysql\MySQL Server5.5\bin>mysqld --skip-grant-tables
第二步
Microsoft Windows [版本 5.2.3790]
(C) 著作權 1985-2003 Microsoft Corp.
C:\Documents and Settings\Administrator>cd D:\web\www.php100.com\Mysql\MySQL Se
rver5.5\bin
C:\Documents and Settings\Administrator>d:
D:\web\www.php100.com\Mysql\MySQL Server5.5\bin>mysql
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.5.10 MySQL Community Server (GPL)
Copyright (c) 2000, 2010, 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> use mysql;
Database changed
mysql> update user set password=password("520") where user="root";
Query OK, 1 row affected (0.00 sec)
Rows matched: 1 Changed: 1 Warnings: 0
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
mysql> \q
Bye
D:\web\www.php100.com\Mysql\MySQL Server5.5\bin>