Well then all you have to do is modify (with a schema created in mysql and username/password with full rights on that schema) all the persistence.xml and hibernate.cfg.xml files found in,
- jbpm-gwt-console-server.war META-INF
- jbpm-gwt-console-server.war lib/jbpm-human-task-5.1.0.Final.jar META-INF
- jbpm-gwt-console-server.war lib/jbpm-bam-5.1.0.Final.jar META-INF
- jboss datasource i.e. testDS1-ds.xml
- jbpm-human-task-5.1.0.Final.jar and jbpm-bam-5.1.0.Final.jar in the runtime used by the human task
By the time jboss and the human task start all tables will be created.