Deadlock situation when commting a transaction

[mail4tester <ma...@gmail.com>]

Hi there ,

I have situation when playing the OpenJPA queries.
I tried to do this in main () method...
> Open Transaction T1
> Query (em.find()) Entity E1
> Change the entity value.

> Open Transaction T2
> Query the (same) Entity E1
> Change the entity value

> Commit transaction T1 (<--Hangs here)
> Commit transaction T2

I just could figure out why @ > Commit transaction T1 , that it hangs
forever !!! 
Are there any reasons ??
Is it a bug in OpenJPA , if it hangs ?

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Re: Deadlock situation when commting a transaction

[Rick Curtis <cu...@gmail.com>]

What version of OpenJPA are you using? Are you using pessimistic locking (If
you're not sure what I'm talking about, can you post the contents of your
persistence.xml file)? Can you post a small unit test that demonstrates the
problem?

Thanks,
Rick

On Thu, Sep 9, 2010 at 8:28 AM, mail4tester <ma...@gmail.com> wrote:

>
> Hi there ,
>
> I have situation when playing the OpenJPA queries.
> I tried to do this in main () method...
> > Open Transaction T1
> > Query (em.find()) Entity E1
> > Change the entity value.
>
> > Open Transaction T2
> > Query the (same) Entity E1
> > Change the entity value
>
> > Commit transaction T1 (<--Hangs here)
> > Commit transaction T2
>
> I just could figure out why @ > Commit transaction T1 , that it hangs
> forever !!!
> Are there any reasons ??
> Is it a bug in OpenJPA , if it hangs ?