Hello, i just completed the upgrade of my engine appliance from 4.1.8 to 4.2.0.1. I would like to share the only error i've encountered while upgrading and running engine-setup: [ INFO ] Creating/refreshing Engine database schema [ ERROR ] schema.sh: FATAL: Cannot execute sql command: --file=/usr/share/ovirt-engine/dbscripts/upgrade/04_02_0140_add_max_memory_constraint.sql [ ERROR ] Failed to execute stage 'Misc configuration': Engine schema refresh failed After some search i found out that is an error linked to a bad configuration of one (or more) vm having "Memory Size" value set with an higher value than "Maximum Memory". In my case the vm with that error was HostedEngine. Editing the vm configuration by setting an appropriate value allowed me to run again engine-setup with success. Luca -- "E' assurdo impiegare gli uomini di intelligenza eccellente per fare calcoli che potrebbero essere affidati a chiunque se si usassero delle macchine" Gottfried Wilhelm von Leibnitz, Filosofo e Matematico (1646-1716) "Internet è la più grande biblioteca del mondo. Ma il problema è che i libri sono tutti sparsi sul pavimento" John Allen Paulos, Matematico (1945-vivente) Luca 'remix_tj' Lorenzetto, http://www.remixtj.net , <lorenzetto.luca(a)gmail.com&gt;