Mysql 4.1 Windows 下升级问题
使用PHPMYADMIN时报错:
Client does not support authentication protocol requested by server; consider upgrading MySQL client

官方的说法是
MySQL 4.1 and up uses an authentication protocol based on a password hashing algorithm that is incompatible with that used by older clients. …..

如果你升级mysql到4.1以上版本后遇到以上问题,请先确定你的mysql client 是4.1或者更高版本.(WINDOWS下有问题你就直接跳到下面看解决方法了,因为MYSQL 在WINDOWS是client和server一起装上了的)

请使用以下两种方法之一

其一:
mysql> SET PASSWORD FOR
-> ‘some_user’@’some_host’ = OLD_PASSWORD(‘newpwd’);

其二:
mysql> UPDATE mysql.user SET Password = OLD_PASSWORD(‘newpwd’)
-> WHERE Host = ‘some_host’ AND User = ‘some_user’;
mysql> FLUSH PRIVILEGES;

来源:http://www.discuz.net/viewthread.php?tid=87685&extra=page%3D6

 

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