Hi Chris,
As per your suggestions,let me point out the modifications I made:
I commented the line
<property name="hibernate.hbm2ddl.auto" value="create" /> in persistence related files present in jbpm-gwt-console-server war file.
I also made changes in persistence files of taskservice in META_INF as listed in above reply,But I able to find process instances running which i performed before ant stop.demo.But,couldn't able to see the tasks which i started earlier.Anything wrong I performed in this context.Please give me suggestion to solve this probem.My requirement is to appear personal tasks even after I performed ant start.demo.But,Only Process Instances are appearing,not tasks.
Regards
Murthy