How does one change the definition of a replicated table?
Oracle advanced replication will replicate DML changes (inserts, updates, and deletes) and all DDL (create, alter, delete) changes made to all master sites for a replication group. So, if you decide to add a column to a replicated table, this column will be added at all of your master sites. Additionally, you can change the members of a replication group, for example, if you decide to add an index to a table, you can choose to have this index replicated to all of your master sites.