Hi on trunk you can't use MySQL without specifying the dictionnary because when checking it is not MariaDB the dict is overriden and MySQL dict is forgotten. I opened an issue https://issues.apache.org/jira/browse/OPENJPA-2432 and attached a patch.
Can you review it please? *Romain Manni-Bucau* *Twitter: @rmannibucau <https://twitter.com/rmannibucau>* *Blog: **http://rmannibucau.wordpress.com/*<http://rmannibucau.wordpress.com/> *LinkedIn: **http://fr.linkedin.com/in/rmannibucau* *Github: https://github.com/rmannibucau*