Thread:Project:Support desk/Changed wgDBuser and cannot access my server

I changed my $wgDBuser and $wgDBname to try and change the old administrator to myself. In doing so, I made it to where the public cannot access my site any more. I tried to change the credentials back to the old administrator, but I cannot remember what his was. I wanted to change it so that I can secure our phpmyadmin as well as work within.

Can we: A) Find those credentials located elsewhere in the system B) Change the credentials so that the site can load under a new username