Looks like you are running in a managed environment, so you need to use
JTA apis like UserTransaction to control transaction boundaries instead
of using EntityTransaction. Just do a search in the web, you shall find
some better explanation.
Sahoo
On Friday 12 November 2010 10:26 AM, forums_at_java.net wrote:
> I tried to update my db table using Entity manager.
>
> My code was
>
> TableName obj = em.find(TableName.class,TableNameId);
>
> obj.setName("Test");
>
> em.getTransaction().begin(); *<<Exception : Cannot use an
> EntityTransaction while using JTA*
>
> em.getTransaction().commit();
>
> em.close();
>
> How can I update db table using Entity manager????
>
> Z there a way to overcome this problem????
>
>
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>
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