Philippe Marschall

Can you try to remove or comment out the `@Temporal` annotation?

What operation do you perform when this happens? Are you using criteria API?

That's really interesting, the tests have no dependency on `org.eclipse.persistence.oracle` and therefore `org.eclipse.persistence.platform.database.OraclePlatform` is used instead. I haven't tested criteria API though, only `EntityManager#find`. `TIMESTAMPTZ` is certainly serializable in both...

At this point we have established that it's a bug in EclipseLink so we should get in contact with them and report a [bug](https://bugs.eclipse.org/bugs/buglist.cgi?component=JPA&product=EclipseLink&resolution=---). They should also be able to...

I did some additional testing and the issue is limited to criteria API but reading in general. When I use ```xml ``` I can no longer reproduce the issue. I...

I filed [bug 511999](https://bugs.eclipse.org/bugs/show_bug.cgi?id=511999), let's see where it goes from here.

@maksymgendin I did some additional testing and simply calling `#getObject` was enough for my tests, in which cases was additionally overriding `#convertObject` also necessary? My platforms look like this: *...

@maksymgendin is there a specific reason why you're doing that or did you simply for testing or migration purposes simply start with just one column?

@maksymgendin do you use `Calendar` for `TIMESTAMP` or for `TIMESTAMP WITH TIME ZONE` columns?

I now understand why you had to implement `convertObject`. The more I dig into this issue the more I question whether `TIMESTAMPTZWrapper` really exists because of `TIMESTAMPTZ` not being serializable...