Hi friends,<BR>Advance thanks for ur response. <BR> I have to run a schedule dialy, in which i have to retrieve data from existing oracle database and store the data sqlserver database..the existing system runs on oracle database.for new system i have to use sqlserver and integrate with existing system.Because of security,i&#039;m not able to connect the oracle database.so i want to replicate the data daily at nights from oracle to sqlserver.<BR>I want to replicate only modified data or newly entered data. only..is there any way to do this..<BR>thanks once again..<BR>