Trouble with UPDATE PER SET PERBloque6='', PERBloque7='', PERBloque8='', PERBloque9='', PERBloque10='', PERBloque11='', PERBloque12='', PERBloque13='', PERBloque14='', PERBloque15='', PERBloque16='', PERBloque17='', PERBloque18='', PERBloque19='', PERBloque20='' WHERE PERCodigo='' -->Connection refused