Here is a great error message I see when deploying an error:
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Deploying application in domain failed; Deployment Error -- The
persistence-context-ref-name [sample.NewServlet/em] in module
[C:\Users\Arun Gupta\WebApplication5\build\web] resolves to a
persistence unit called [JavaLibrary1PU] which is of type
RESOURCE_LOCAL. Only persistence units with transaction type JTA can be
used as a container managed entity manager. Please verify your application.
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Little detailed but very clearly conveys what is possibly wrong in the
application. Now how do I fix it when generating this PU in NB ?
-Arun
--
Technology Evangelist
Web Technologies and Standards
Sun Microsystems, Inc.
Blog: http://blogs.sun.com/arungupta