Article:		An Introduction to Java Persistence for Client-Side Developers
Subject:		No Persistence provider for EntityManager named sample
Date:		2007-03-26 09:04:03
From:		kishorepr
Response to: No Persistence provider for EntityManager named sample
I had a similar problem while I was running in a stand-alone application. I resolved it by ensuring that the classpath is set correctly and persistence.xml file must be placed in the META-INF folder ONLY. One more check is to ensure that the provider tag in the persistence.xml file is accurate. I had used oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider.