简体中文(ZH-CN) English(EN) 繁体中文(ZH-TW) 日本語(JA) 한국어(KO) Melayu(MS) Français(FR) Deutsch(DE)
Home > Database > Mysql Tutorial > body text

mysql数据库权限更改后的生效时间_MySQL

WBOY
Release： 2016-06-01 13:11:35
Original
1309 people have browsed it

When Privilege Changes Take Effect

1.当mysqld启动时，所有授权表的内容被读进内存并且从此时生效。


2.当服务器注意到授权表被改变了时，现存的客户端连接有如下影响：

  • 表和列权限在客户端的下一次请求时生效。

  • 数据库权限改变在下一个USE db_name命令生效。

  • 全局权限的改变和密码改变在下一次客户端连接时生效。


3.如果用GRANT、REVOKE或SET PASSWORD对授权表进行修改，服务器会注意到并立即重新将授权表载入内存。


4.如果你手动地修改授权表(使用INSERT、UPDATE或DELETE等等)，你应该执行mysqladmin flush-privileges或mysqladmin reload告诉服务器再装载授权表，否则你的更改将不会生效，除非你重启服务器。


5.如果你直接更改了授权表但忘记重载，重启服务器后你的更改方生效。这样可能让你迷惑为什么你的更改没有什么变化！



source：php.cn
Previous article：MMM结合Semisync机制实现Mysql Master-Master高可用_MySQL Next article：Mysql 主从同步简单配置_MySQL
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Articles by Author
Latest Issues
function_exists() cannot determine the custom function Function test () {return true;} if (function_exists ('test')) {echo "test is function...
From 2024-04-29 11:01:01
0
2
1788
How to display the mobile version of Google Chrome Hello teacher, how can I change Google Chrome into a mobile version?
From 2024-04-23 00:22:19
0
10
1929
The child window operates the parent window, but the output does not respond. The first two sentences are executable, but the last sentence cannot be implemented.
From 2024-04-19 15:37:47
0
1
1647
There is no output in the parent window document.onclick = function(){ window.opener.document.write('I am the output of the child ...
From 2024-04-18 23:52:34
0
1
1549
Where is the courseware about CSS mind mapping? Courseware
From 2024-04-16 10:10:18
0
0
1582
Related Topics
More>
Popular Recommendations
Popular Tutorials
More>
Related Tutorials
Popular Recommendations
Latest courses
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template
About us Disclaimer Sitemap
php.cn：Public welfare online PHP training，Help PHP learners grow quickly！