This error shows sometimes (~1/4 times) when starting up the server, other times it works fine.
mysql database has 1.2mil people in it. mysql openfiles and max connections already set to pretty much unlimited.

http://pastebin.com/2b1uz3a4

craftconomy3-3.3
vault 1.5.3

It's a pretty generic error of MySQL, not much I can do unfortunatly. The error just means it errored trying to do stuff with the server