Krishna
Once you create the configuration, it is very simple to add tables for replication. Go to LTRC, Select the Configuration, on the tab Data Transfer , select Data Provisioning and add tables. The tables would be start replicating to oracle. First the Source and Target tables are created, then followed by Activation and DB triggers.
If you have tried the above steps and still not working, brief the issue in detail with more detailed information.
Mahesh Shetty