Re: Problems with JDO

Hi Guarav,

If you're using JDO on App Engine, please use the App Engine forum for
your question instead. This is the GWT forum.

Thank you,
/dmc

On Tue, Nov 2, 2010 at 3:16 PM, Caio <caio.nery1612@yahoo.com.br> wrote:
> Hello,
> I'm having some troubles with JDO. I have declared two independent
> entity classes (with no relationship), and this way, I've used them in
> two different java classes contexts. Then, the program execution
> generated an exception about the duplicated name of
> PersistenceManagerFactory. I have corrected the name of this object at
> jdoconfig.xml but a new exception ocurred:
> javax.jdo.JDOFatalUserException. In addition, if you want to see the
> complete error list, read below:
>
> Caused by: javax.jdo.JDOFatalUserException: Application code attempted
> to create a PersistenceManagerFactory named transactions, but one with
> this name already exists!  Instances of PersistenceManagerFactory are
> extremely slow to create and it is usually not necessary to create one
> with a given name more than once.  Instead, create a singleton and
> share it throughout your code.  If you really do need to create a
> duplicate PersistenceManagerFactory (such as for a unittest suite),
> set the appengine.orm.disable.duplicate.pmf.exception system property
> to avoid this error.
>
> THANK U FOR HELPING!
>
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David Chandler
Developer Programs Engineer, Google Web Toolkit
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