Oracle is sensitive to case, use: | @Column(name = "PARTNER_TYPE", length=1, columnDefinition = "char(1)") | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4175225#4175225 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4175225