| Re: [eclipselink-users] Accessor or its connection has been set to null. |
It seems that you have some threads sharing the same EntityManager. Make sure you are not using JTA or managed EntityManagers if you are doing your own threading. >> Closing an EntityManager closes the ClientSession Yes. It releases and closes the associated UnitOfWork and ClientSession. >> Releasing an EntityTransaction releases the UnitOfWork Not exactly. If you commit an EntityManager transaction it will commit the database transaction, and resume the UnitOfWork (commitAndResume). If you rollback an EntityManager transaction it will rollback the database transaction, and clear and release the UnitOfWork and the ClientSession. DavidParker wrote: > > I have multiple threads in a server process, and they all appear to be > using different EntityManagerFactory and EntityManagers, but I am getting: > > Accessor or its connection has been set to null. This can occur if the > ClientSession or UnitOfWork was released in a seperate thread, for > instance if a Timeout occurred. > > We are using the JPA interfaces, so I just want to make sure the mappings > to this error message: > > Closing an EntityManager closes the ClientSession? > Releasing an EntityTransaction releases the UnitOfWork? > > Thanks. > ============================================= > David Parker > dap@xxxxxxxxxxxxxxxxxxxx > > > ----- http://wiki.eclipse.org/User:James.sutherland.oracle.com James Sutherland http://www.eclipse.org/eclipselink/ EclipseLink , http://www.oracle.com/technology/products/ias/toplink/ TopLink Wiki: http://wiki.eclipse.org/EclipseLink EclipseLink , http://wiki.oracle.com/page/TopLink TopLink Forums: http://forums.oracle.com/forums/forum.jspa?forumID=48 TopLink , http://www.nabble.com/EclipseLink-f26430.html EclipseLink Book: http://en.wikibooks.org/wiki/Java_Persistence Java Persistence -- View this message in context: http://old.nabble.com/Accessor-or-its-connection-has-been-set-to-null.-tp27441510p27516229.html Sent from the EclipseLink - Users mailing list archive at Nabble.com.