Hi,

this must be an evergreen. So sorry at first :-)
But there seems to be quite an uncertainty about the jtm lookup when using Hibernate with Websphere 6.1.

So what's the basic recommendation in here? Should I go for the provided "org.hibernate.transaction.WebSphereExtendedJTATransactionLookup"?
On the other side, there are a couple of snippets to be found, wrapped around an UOWManager Lookup.
As far as I've got it, in WAS 6.1 they've provided this new UOW thingy.

But using the provided and - I guess - more supported and managed implementations in hibernate.jar gives me a better feeling.
For example, once I've read about a performance problem in WebSphereExtendedJTATransactionLookup which has been solved by caching some lookups.
Well, I guess this kind of support is not given by some snippets around the UOW stuff I've found ;-)

So are there any known issue/scenarios in which I absolutely should not use the provided lookup but go for the UOW one.

The good thing is, I'm still at the very beginning and I could take any road.

Thnx a lot for your Help.

Markus, Germany