I found solution for my problem with OpenJPA here: Using TomEE and open JPA, i get the following error: SEVERE: JAVA AGENT NOT INSTALLED, but adding VM parameter as in question answer or documentation https://tomee.apache.org/javaagent.html, in project’s run configuration, results in this error, after trying to run: Project is JavaEE in Eclipse IDE, using Maven build tool and TomEE as