The objective of this paper is to forecast the performance of transaction under real time distributed system. A real time database system is a transaction processing system design to handle the workload within a deadline. The objective of such scheme is to complete the processing of transaction before the deadline expires. The performance of the system depends on the factors such as database system architectures, underlying processors, disks speeds, various operating conditions and workloads. Forecasting the transaction performance depends on the basis of comparing with commit and abort of a transition in the scheme. The output of the present simulation gives the percentage of commit and abort of transaction.