手册：DBError.php

MediaWiki文件： DBError.php
位置：	includes/libs/rdbms/exception/
源代码：	master • 1.41.1 • 1.40.3 • 1.39.7
类：	Wikimedia\Rdbms\DBError

DBConnectionError

这是一个臭名昭著的错误：

抱歉！本网站出现了一些技术问题。 请等待几分钟后重试。

如果你看到这一点，数据库很不高兴，但至少MediaWiki还活着，并知道这一点。

无法连接到数据库

I haven't solved this for myself yet, but you should look into it following the same way I did.

1. Check out the apache2 error log. If you're on ubuntu this was at "/var/log/apache2/error.log" by default when I wrote this.
2. In my case, I got the following error .... "MySQL server has gone away in" .... followed by .... Error reading result set's header in ......
3. This was supposedly caused by connection problems. Search those two terms and you should see several different places where people address it. Good luck!