Home Database Mysql Tutorial MYSQL ERROR 1045 (28000): Access denied for user (using pass

MYSQL ERROR 1045 (28000): Access denied for user (using pass

Jun 07, 2016 pm 06:01 PM
error mysql

Mysql中添加用户之后可能出现登录时提示ERROR 1045 (28000): Access denied for user的错误.

第一种方法: 推荐
错误描述: Mysql中添加用户之后可能出现登录时提示ERROR 1045 (28000): Access denied for user的错误.

原因分析: 在mysql.user表中可能出现user为空的记录,如:

mysql> select host,user from user;
+------------------+------+
| host | user |
+------------------+------+
| % | test |
| localhost | |
| localhost | root |
+------------------+------+
3 rows in set (0.00 sec)

解决 办法: 删除这些为空的用户或者更新为其他用户名

删除user.user中值为NULL的,或更新NULL为test

1)delete from user where user is NULL
2)update user set user='test' where user is NULL

意外的情况: 如果上述方法没有效果,依然出现空用户,则可以利用图形化用户client删除.

第二种方法:linux下
开场白:解决LINUX问题是一种乐趣,当然,能遇到问题就是上天赐的享受幸福的机会。
这次使用的是Mandriva2008spring。
因为要搞一个项目,所以需要安装MySql,以往安装MySql都是非常顺利的,尤其MySql提供的rmp包,只需双击下就可以搞定~但不知道什么时候,MYSQL ERROR 1045 (28000): Access denied for user (using password: YES),这个拒绝访问问题变得非常广泛。
百度了一下,没有现成的解决方法,唯有找出其问题所在了。
解决问题思路:
第一步,先使用跳过受权表访问,命令如下:mysqld_safe --user=mysql --skip-grant-tables --skip-networking & (当然,在这之前,先停止mysql服务的运行)。
第二步,mysql -uroot mysql 登录mysql。
第三步,访问mysql数据库下的user表。在我的机器上,mysql> select * from user; 得到的,竟然是
Empty set (0.00 sec)。这说明了,我的mysql没有任何可以访问的用户。知道了这问题所在,解决起来就简单了。
第四步,mysql> INSERT INTO user(host, user, password, select_priv, insert_priv, update_priv) VALUES ('localhost', 'username', PASSWORD(‘yourpassword'), 'Y', 'Y','Y');
Query OK, 1 row affected, 3 warnings (0.00 sec)
返回成功,没问题。嘿嘿~~~就这么简单。
第五步,测试,再重启下mysql服务,正常登录,成功!!!

提示:mysql系统中的mysql数据库,存储的是系统数据,像这里的user表存储的是用户信息及其访问权限,还有其他,例如你要新建一个数据库mydb,这数据库有用户me管理的话,mysql数据库里面的db表就会存储相关信息。废话步多说了。

下面是windows 的解决方法:
但如果我们用虚拟主机管理系统开启的用户,而且用户数比较多的时候,好像也不是好办法。

我使用重新安装了mysql,然后进入虚拟主机,逐个删除,重新开数据库,操作之前一定要备份好原来的data目录,最后覆盖下空间数据库就可以了。
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