1. A method for supporting transaction processing in a transactional environment, comprising: receiving, via a transactional server, resource manager (RM) instance information from a data source that is associated with one or more RM instances, wherein the received instance information allows the transactional server to be aware of which RM instance that the transactional server is currently connected to; saving the received instance information into one or more tables that are associated with the transactional server; and allowing the transactional server to process a global transaction based on the instance information saved in the one or more tables.