Once the Change Plan has been created, we can use it to perform a schema synchronization. In this process, Enterprise Manager Cloud Control 12c will synchronize a source and destination schema so that all the changes in the source will be reflected in the destination.
On the Schema Change Plans page, select the Change Plan we just created and click on Create Synchronization from Change Plan.
The wizard to perform schema synchronization now starts.
In the first step, give a name to the synchronization and then select the Source instance, which can be either a database instance, a baseline version, or a Change Plan instance.