1)stop the replicate which replicates the data to database B. 
2)info replicate_name_B, showch 
3)send replicate_name_B status 
4)info replicate_name_B, details 
4)On the new goldengate home for the database B, Create the replicate 
5)Alter replicate_name_new_B with the extseqno , RBA 
6)start the replicate_name_new_B