Advanced Replication Guide : Planning and designing for advanced replication applications : Planning for advanced replication installation : Tailoring the synchronization process
  
Tailoring the synchronization process
A distributed advanced replication system can use the off-peak hours of the system. The advanced replication architecture allows the synchronization process to be fully tailored.
When you are designing your advanced replication environment, consider the capacity of the available infrastructure. For example, you can tailor large amounts of data transfer over the network when the available bandwidth is optimal. During rush hours, you can allow the transfer of only the most urgent synchronization tasks, such as propagation of high-priority transactions.
Because there is some overhead related to synchronizing data, a compromise between the overall performance of the database and the data timeliness is often needed. The higher the timeliness requirement of the data (that is, the smaller the synchronization messages are), the more overhead the synchronization causes and hence, the less scalability you have in the overall system.
See also
Planning for advanced replication installation