Too many PHP Connections?

I’m getting
mysqli_real_connect(): (08004/1040): Too many connections

mysqli_connect(): (08004/1040): Too many connections 
mysqli_connect(): (HY000/1040): Too many connections

when I try to connect to Omeka and Wordpress sections of my account. I think I need to increase number of connections allowed, but I don’t know how to :frowning: