php后台经常提示无法连接mysql 刷新后又可以访问的解决方法
这几天有一台MySQL数据库服务器出现了频繁的掉线情况,通过排查,并没有排查出哪个网站被攻击,百思不得其解中的时候,群里有个朋友说是因为微软KB967723造成的,网上搜索了一下,果然很多人都是这样的问题,都是windows系统下安装的MySQL造成的
网上一共提供了两种方法:第一种:卸载KB967723补丁
登录服务器,进入控制面板 — 添加和删除程序 — (勾选上方的“显示更新”)在里面可以看到更新的KB967723这个补丁,然后就想卸载普通软件一样卸载,卸载中会提示你,如果卸载可能导致程序运行出错,没关系,选择“是”,继续卸载。卸载完成后重启数据库服务器。
第二种:修改
本方法是微软给出的修改修复该Bug的的方法,原因是默认最大的临时 TCP 端口的数是 5000 适用于一节中包含的产品中。 在这些产品中添加一个新参数。 要提高临时端口的上限,请按照下列步骤操作:
- 启动编辑器。
- 在的中找到以下子项,然后单击 参数 : HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
- 在 编辑 菜单上单击 新建 ,,,然后添加下面的项:
数值名称: MaxUserPort
值类型: DWORD
值数据: 65534
有效范围: 5000-65534 (十进制)
默认值: 0x1388 (5000 十进制)
说明: 此参数将控制程序从系统请求任何可用的用户端口时使用的最大端口数。 通常,1024 的值和包含的 5000 之间分配临时的 (短) 端口。 - 退出编辑器,并重新启动计算机。
以上两种方法,第一种已经得到验证可以正确解决,第二种方法正在验证中。
微软原文地址 :
因为考虑到大家修改文件会出现错误,脚本之家特为大家准备了一个文件,双击运行导入即可,服务器上有杀毒防止修改注册的现在临时取消下啊,要不无法导入。

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