Hi I have a method which REQUIRES_NEW transaction, which perform a SELECT ... FOR UPDATE on one row. On PostgreSQL everything is fine and the query locks correctly, while if i use DB2 as datasource, it seems that my select for update doesnt actually lock anything, and if i perform another invocation to this method, or some other selects for update from other consoles, they can succeed... What's wrong? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4107183#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...