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From Christopher Giblin <>
Subject relationship EntityManager and JDBC Connection?
Date Sun, 27 Sep 2009 15:11:04 GMT


Does an EntityManager instance correspond one-to-one to a JDBC connection?
When the EM is closed, is the JDBC connection closed? That is, by opening
and closing EMs, is one also opening and closing JDBC connections?

I am using OpenJPA with Derby. There is no connection pooling:

 <property name="openjpa.ConnectionDriverName" value=

Sorry if I overlooked in the excellent documentation.


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