Mr. Joram,
Thank you for effective guidance toward solution of problem.
I made these steps:
- Read "Managing the Activiti Engine" from excelent book, Chapter 15 "Activiti in Action",
- Installed h2,
- Run three scripts (activiti.h2.create.engine.sql, activiti.h2.create.history.sql, activiti.h2.create.identity.sql),
- Changed one row in C:\Alfresco\tomcat\webapps\activiti-explorer\WEB-INF\classes\db.properties (jdbc.url=jdbc:h2:~/activiti)
Now my developing environment works just fine.
Thanks again,