Hi Alexander, I'm not sure if you and the rest of the hibernate team at Exadel is on jbosstools-dev, so i'm cc'ing you. If you are not on the list then please sign up ,) Anyway, I just noticed this commit: http://fisheye.jboss.org/browse/JBossTools/trunk/hibernatetools/plugins/o... Calling buildMappings() on a configuration very often (which a label generator for column will result it) should *not* occur. It is an heavyweight operation - it should only be done very rarely; and basically only when first created. Please fix that. Thanks, -- -- Max Rydahl Andersen callto://max.rydahl.andersen Hibernate max(a)hibernate.org http://hibernate.org JBoss a division of Red Hat max.andersen(a)jboss.com