Can I use RAC in a distributed transaction processing environment?
YES. Best practices is to have all tightly coupled branches of a distributed transaction running on a RAC database must run on the same instance. Between transactions and between services, transactions can be load balanced across all of the database instances.You can use services to manage DTP environments. By defining the DTP property of a service, the service is guaranteed to run on one instance at a time in a RAC database. All global distributed transactions performed through the DTP service are ensured to have their tightly-coupled branches running on a single RAC instance.
