getConnection null in new transaction

I am using Weblogic 11, ejb3.0

I have code which is doing lookup to another deployment in my container remotely. everything work fine and I managed to reach to the another deployment. the method which working in the remote deployment open new transaction via the annotation:

@TransactionAttribute(TransactionAttributeType.REQUIRES_NEW)

and when it f开发者_如何学Goinish and get back to my deployment I have weird situation which I can get connection from my data source using the method databseDataSource.getConnection(); (It receives null)

I am using XA.

any ideas why?

thanks, ray.

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Problem was that we cant open new transaction when combining xa and non xa datasources. I have moved everything to xa and it worked right