In this paper, we describe an efficient software-only Distributed Shared Memory (DSM) consistency protocol for an unconventional but important application domain -object transactional processing.Designers of transactional applications, while sensitive to performance issues, already accept significant overhead for the added functionality provided by transactions and, we speculate, would be willing to accept some small additional overhead for the benefit of "easy" distributed parallel execution.This is in contrast to the performance critical needs of the high-end scientific applications typically targetted by DSM system designers.While, after 10 years of performance enhancement, software DSMs are still considered inadequate by a large part of the parallel computing community, we believe they are now more than sufficiently mature to support distributed transactional environments.The key to making DSM attractive to the developers of transactional applications is ease of use.The much touted simplification offered by the use of shared memory instead of message passing is not enough.It must be possible to hide the needed synchronization operations from the programmer.To achieve this goal, we have developed a system for nested object transactions that supports the automatic insertion of synchronization primitives.These primitives are then used to drive the operation of an improved form of Bershad's Entry Consistency (EC) protocol to maintain memory consistency between the processors/nodes in a distributed computing system.The protocol described is also compatible with a number of performance enhancements for DSM systems that have been described in the literature.