access denied for user 'root'@'localhost' using password yes

 

 

转至  http://topic.csdn.net/u/20090515/21/2b3c9a12-d8a5-4bb1-9895-6069cef5aef8.html

 

 

先停掉mysql服务。

 

切换到MySQL bin目录下。 比如我的是 C:\Program Files\MySQL\MySQL Server 5.1\bin
然后敲下面的粗体的命令。注意你的my.ini位置。

C:\Program Files\MySQL\MySQL Server 5.1\bin>mysqld --defaults-file="C:\Program
Files\MySQL\MySQL Server 5.1\my.ini" --console --skip-grant-tables
090515 22:06:09 [Warning] The syntax '--log' is deprecated and will be removed i
n MySQL 7.0. Please use '--general_log'/'--general_log_file' instead.
090515 22:06:09 [Warning] The syntax '--log_slow_queries' is deprecated and will
 be removed in MySQL 7.0. Please use '--slow_query_log'/'--slow_query_log_file'
instead.
090515 22:06:09 [Warning] The syntax '--log' is deprecated and will be removed i
n MySQL 7.0. Please use '--general_log'/'--general_log_file' instead.
090515 22:06:09 [Warning] The syntax '--log_slow_queries' is deprecated and will
 be removed in MySQL 7.0. Please use '--slow_query_log'/'--slow_query_log_file'
instead.
090515 22:06:09 [ERROR] The update log is no longer supported by MySQL in versio
n 5.0 and above. It is replaced by the binary log. Now starting MySQL with --log
-bin='' instead.
090515 22:06:09 InnoDB: Started; log sequence number 0 324221
090515 22:06:09 [Note] mysqld: ready for connections.
Version: '5.1.33-community-log' socket: '' port: 3306 MySQL Community Server
(GPL)

看到这个结果就说明MySQL已经起来了。
再开一个DOS窗口，同样切到mysql bin目录下，
C:\Program Files\MySQL\MySQL Server 5.1\bin>mysql -uroot mysql
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.1.33-community-log MySQL Community Server (GPL)

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

下面更新数据库记录

mysql> UPDATE user SET Password=PASSWORD(’newpassword’) where USER=’root’;  
mysql> FLUSH PRIVILEGES;  
mysql> quit

 

 

设置新密码

重新开一个dos窗口

mysql -uroot -p  
Enter password: <输入新设的密码newpassword>  

然后
C:\Program Files\MySQL\MySQL Server 5.1\bin>mysqladmin shutdown

之后正常重启MySQL服务就行了。

 

 

 

mysql  root 用户的远程访问

 

grant ALL ON *.* TO root@"%" IDENTIFIED BY 'password' WITH grant OPTION;