Dear all:

    A very strange problem: I have modified the

"jbpm-gwt-console-server-war/WEB-INF/classes/META-INF/persistence.xml" and

"jbpm-gwt-console-server-war/WEB-INF/lib/jbpm-human-task-5.1.0.Final.jar/META-INF/persistence.xml"   ,

from "<property name="hibernate.hbm2ddl.auto" value="create" />"

to "<property name="hibernate.hbm2ddl.auto" value="update" />".

I start some instances under one process,  after I restart human task server, there is no instance under the process! But in the database ,the all data is in table ProcessInstanceInfo .

and the personal tasks can show:

So who can tell me why?

any help is grateful!!!