From: <forums_at_java.net>
Date: Mon, 20 Jun 2011 00:03:31 -0500 (CDT)

I create my connection pool in admin console and use ping  to test it .it
show me successful
and i am using selvret  to access my database with persistence.xml  but it
show me error java.lang.IllegalStateException: Unable to retrieve
EntityManagerFactory for unitName null

I need help

 

 

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