Hello, in your case you prevent a lock if using the method getUuid. Any other method include findBy... will set a lock if declared. You can set the transaction of getter, finder to "Supports" and setter/create to Mandatory/Required. If you use a Session without a transaction reads to the bean will not lock. It can be helful to log the TX http://www.jboss.org/index.html?module=bb&op=viewtopic&t=59031 <category name="org.jboss.tm"> | <priority value="TRACE" class="org.jboss.logging.XLevel"/> | </category> View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3983679#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...