解决Navicat连接MySQL总是报错1251的方法

时间：2023-03-08 17:10:25

今天下了个
MySQL8.0，发现Navicat连接不上，总是报错1251；

原因是MySQL8.0版本的加密方式和MySQL5.0的不一样，连接会报错。

试了很多种方法，终于找到一种可以实现的：

　　更改加密方式

1.先通过命令行进入mysql的root账户：

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PS C:\Windows\system32> mysql -uroot -p

再输入root的密码：

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Enter password: ******
Welcome to
the MySQL monitor.  Commands end
with
; or
\g.
Your MySQL connection
id is
18
Server version: 8.0.11 MySQL Community Server - GPL
Copyright (c) 2000, 2018, 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>

2.更改加密方式：

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mysql> ALTER
USER
'root'@'localhost'
IDENTIFIED BY
'password'
PASSWORD
EXPIRE NEVER;
Query OK, 0 rows
affected (0.10 sec)

3.更改密码：

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mysql> ALTER
USER
'root'@'localhost'
IDENTIFIED WITH
mysql_native_password BY
'password';
Query OK, 0 rows
affected (0.35 sec)

4.刷新：

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mysql> FLUSH PRIVILEGES;
Query OK, 0 rows
affected (0.28 sec)

//
如果报错ERROR 1396 (HY000): Operation ALTER USER failed for 'root'@'%'：

则是远程访问权限不正确，先选择数据库，查看一下再更改：

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mysql> use mysql;
Database changed
mysql> select
user,host from
user;
+------------------+-----------+
| user             | host      |
+------------------+-----------+
| mysql.infoschema | localhost |
| mysql.session    | localhost |
| mysql.sys        | localhost |
| root             | localhost |
+------------------+-----------+
5 rows
in
set
(0.00 sec)

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