[jboss-user] [Persistence, JBoss/CMP, Hibernate, Database] - question concerning an Entity Manager and its associated JDB

markreyn do-not-reply at jboss.com
Mon Feb 9 16:16:49 EST 2009

I'm working with a team on a application which uses Seam 2.1 with JBoss AS 5.0. We plan to use JPA with the Hibernate provider.

I'm investigating at what point an entity manager actually obtains a JDBC connection from a pool and how long it holds onto the connection. Does the EM acquire a jdbc connection when it is instantiated and hold on to it for its full lifetime or does it only obtain a connection during persistent operations life find, persist, and during transactions?

Is this behavior defined as part of the JPA spec or does the behavior vary by implementation?


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