Illustrated is a system and method for identifying a potential conflict, using a conflict determination engine, between a first transaction and a second transaction stored in a conflict hash map, the potential conflict based upon a potential accessing of a shared resource common to both the first transaction and the second transaction. The system and method further includes determining an actual conflict, using the conflict determination engine to access the combination of the conflict hash map and the read set hash map, between the first transaction and the second transaction, where a time stamp value of only selected shared locations has changed relative to a previous time stamp value, the time stamp value stored in the read set hash map and accessed using the first transaction.