Could you post the persistence.xml?
I faced the same when i had a persistence.xml with a container
specific datasource.
When i specified the connection with
<properties>
    <property name="hibernate.connection.username" value="username"/>
    ...
</properties>

the error disappeared.

On Apr 7, 7:41 am, mh <[email protected]> wrote:
> Hi,
> I'm trying to use Google Guice in project that uses GWT and Hibernate.
> Before incorporating Guice, everything worked fine, i.e. unit tests
> using database worked fine. First, I tried to run a unit test using
> database, and it worked fine. Then I modified the web.xml file and
> created two classes: context listener, that initialises the
> application, and Guice filter.
>
> The problem seems to be in application initialisation. In the module,
> I'm installig the JPA Guice module, with the argument of the
> persistence unit, just like in the persistence.xml. When I'm trying to
> run the GWT application, I'm getting No persistence for Entity Manager
> provider for "persdb" (or something like that, where persdb is the
> name of the persistence unit).
>
> This happens wherever I put my persistence.xml file. Have someone had
> such situation? What is the solution?
>
> Regards,
> Mateusz

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