Re: [eclipselink-users] How to work with multiple databases/schemas

[Markus Kolb <eclipselink@xxxxxxxxxxxx>]

James Sutherland wrote on 2009-05-11 22:24:
> In JPA the EntityManagerFactory is always cached.  So if you access the same
> factory name twice, you will get the first instance back.  So you cannot
> change your login parameters and get a different factory back.  The only way
> to do this is to either create a separate persistence unit, or first close
> all references to the first EntityManagerFactory, then create a new one
> using the new login.

Thanks this helps me, too.
You have to know that is some kind of singleton... the API documentation 
could be more precise with that.
Instead Persistence.createEntityManagerFactory it should have been named 
Persistence.getEntityManagerFactoryInstance ;-)