Thread:Project:Support desk/Won't Access Database: Too many open links/reply (7)

The fact that a certain function is present in the code does not tell anything about if and how it's actually used.

It would be important to know when/why this happens. As far as I know the MediaWiki Core and also SyntaxHighlight_GeSHi, which you have on your system (which does not mean you actually use it), do not use more connections than they need. As written above I have a wiki, which is frequently used and for this wiki maybe 30-50 concurrent DB connections are really enough.

Is it possible that you in fact really have a need for more connections? E.g. do you have more than 20 concurrent visitors requesting stuff from MediaWiki? Your access logs should show you that...