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null, message from server: "Host '10.155.58.1' is blocked because of many connection

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错误原因是:

数据库多次连接错误,屏蔽了当前ip的连接请求

 

解决方法有两种:

 

1、登录mysql

mysql -uroot -p

flush hosts

 

2、navicat连接数据库后,选中该数据库右键点刷新->权限

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