I have a very basic grails app which was generated using create-app and creating a simple controller. It works locally, but when I use 'grails war' and deploy it in a tomcat server, there seems to be a database issue. The last 'caused by' in the tomcat logs is
Caused by: org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set
I have not made any changes to the database configuration generated by create-app (thus using an embedded DB).
The environment is: grails 3, debian 9, tomcat 8.
How to solve this ?