The following image shows an example of a source system and a target system:

The installed versions of

Multidomain MDM

and the database software must be the same on the source system and the target system. The MDM Hub Master Database name must be the same on both systems. The Operational Reference Store schema or user name can be different, but the structure of the schemas must be identical.

Oracle GoldenGate replicates the tables in an Operational Reference Store in one direction, from the source system to the target system. The events in the ZDT Message Queue are replicated in both directions.