Hi Mauricio, Thanks for your reply. Problem is solved. Actually I was working with the old snapshot. Again thanks a lot. Thanks & Regards Pardeep Ruhil are you just running the example in that project? Because it inject a lot of variables in there. Also you need to verify that all the configurations are modified correctly, and the database is populated correctly with all the tables needed. Another problem could be that you use an old version of Drools. Remember that the Variable Persistence Strategies are introduced in the trunk, so you need to get the latest snapshots. Greetings. 2009/10/29 <Pardeep.Ruhil(a)lntinfotech.com&gt; http://blog.athico.com/2009/09/drools-flow-variable-persistence.html> table is table. other http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk/drools-persiste...