This illustration shows two Multitentant databases, Production CDB, and Test/Development CDB. The Production CDB has three pluggable databases, PRODPDB1, which is read-write, PRODPDB2, which is read-write, and PRODPDB3, which is read-write.

The Test/Development CDB contains 3 pluggable databases: TESTPDB1 (read-write), TESTPDB2 (read-write), and TMPDB1 (read-write).

The PRODPDB1 database replicates it changes to the TMPDB1 database using Oracle GoldenGate.