connection « EntityManager « JPA Q&A





1. JPA build entity manager with a specific JDBC connection instance    stackoverflow.com

I want to manage the database connection outside entity manager context so that I can use it for different entity managers. The question is how can I build the entity manager ...

2. Two db connections using ejb, java persistence entitymanager    stackoverflow.com

I am am tryign to access two dbs via one slsb, specifically one method within an slsb. However this is not possible ? Other than altering the stored procs ...

3. Hibernate: Cannot create entity manager factory after connection reset    stackoverflow.com

We are using hibernate in a RESTful web service to query a sql server database on another server. If there is a socket exception such as connection reset during the query ...

4. Seam - get Connection via (Session)em.getDelegate();    stackoverflow.com

I use the Seam framework. If I do

Session sess = (Session)em.getDelegate();
Connection conn = sess.connection();
Is this then a new connection? And do I have to close the connection manually? I tested this in a loop ...

5. Does an entity manager create a connection to the database?    stackoverflow.com

In my project, I forgot to close the entity manager for each operation. After some time, I got exception due to excessive connections to mysql server. Does this mean that each ...

6. Connection Pooling in Hibernate entity manager    coderanch.com

Hi I am trying to do the connection pooling for the Hibernate entity manager. As I could see there was one entry in Persistence.xml I have configured my pool size and tested it. its working fine. Will this be efficient even in production ? Some of our java team members say that this is not a enterprise ...

7. EntityManager -Connection details    forum.hibernate.org

Hi, I was just trying to make one J2SE program to test the capabilities of the EntityManager with respect to normal HibernateAnnotations. I followed the reference manual to do the setup configuration. What i found that the connection details given in persistence.xml is not found by hibernate. The persistence.xml file is file is pasted below. Code: