Hi Chris,
Thanks for your quick response.I found hibernate cfg,persitence related files in jbpm-gwt-console-server war file.I edited them as per your instructions and made ant stop.demo.After that again when I perform ant start.demo,the process Instances which I started before are still appearing as running.Great to see that.ut,I couldn't able to see the personal tasks of that processes which I started before.Should i also change persistence related files in my task service.I'm unable to locate it.
Thanks
Krishna