do u try to change the type of field named node in table jbosscache from blob to longblob ? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4111952#4111952 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4111952