10gR2 RAC and XA transactions

We have a 3 node 10gR2 cluster. The middle tier is using XA drivers. They are connecting to the database via a load balanced service where all nodes are preferred. DTP for the service is also set to No.
Does anyone know if this setup could be problematic?
We recently had some very odd behavior occur where we could we could not connect to one of the nodes and had to forcefully reboot the entire server to get it back. We found out after the fact that the middle tier was configured for XA.
Any insight/experience is appreciated.
Thanks,
Jarred

>
We recently had some very odd behavior occur where we could we could not connect to one of the nodes and had to forcefully reboot the entire server to get it back. We found out after the fact that the middle tier was configured for XA.
Thanks,
Jarred
Any specific error message when the application can't connect to any of the nodes?
Cheers

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