freemagento.blogspot.co.uk/2012/10/sqlstatehy000-general-err...

Two most common reasons (and fixes) for the MySQL server has gone away (error 2006) are:

blog.webyog.com/2009/08/10/mysql-server-has-gone-away-part-1...

Most MySQL users have tried getting this rather cryptic error message: “MySQL server has gone away”. 

Here we will discuss one situation that to our experience happens very frequently for people working across multiple servers. ...