Hello, I'm trying to build simple test application with following structure: servlet-ejb-jpa-database Application works well, but when I try to call from servlet ejb, witch call jpa I got error at servlet. Data from db is correctly return via jpa becouse I see it in ejb classs using simple System.out.println. Additional I call simple ejb method sayHello (returning just text) without connection to db and it works well. So at this moment I haven't idea what is wrong. It you would like to see my maven project, it's here: http://iem.pw.edu.pl/~wojciecs/test_ejb_jpa_servlet.7z. I think problem at communication between servlet and ejb. I use tomcat 7.0.27 with openejb 4 Best Regards sw
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