For migrating data from one ZFS storage appliance to another ZFS storage appliance, you can use the shadow migration feature provided by the ZFS storage appliance. Shadow migration supports migration only from NFS sources.
For more details, refer to the Oracle ZFS Storage Appliance Administration Guide at: https://docs.oracle.com/cd/E51475_01/html/E52872/shares__shadow_migration___shadow_migration_.html
Replication can be used to migrate data and configuration information from one ZFS storage appliance to another ZFS storage appliance.
For more details, refer to the Oracle ZFS Storage Appliance Administration Guide at: https://docs.oracle.com/cd/E37831_01/html/E52872/gocuj.html
Oracle Recovery Manager (RMAN) – Is Oracle's preferred solution for database backup and recovery, and can also be used to transport databases and tablespaces to target systems. You can use RMAN to create a database and tablespace copies that can be imported into another database, or move an entire database from one system to another.
For more information including access to the RMAN documentation, go to https://www.oracle.com/database/technologies/high-availability/rman.html
Active Data Guard – Is a set of services that create, manage, and monitor one or more standby databases to enable production Oracle databases to survive disasters and data corruptions. This technology can be used to create a physical standby database on the target system while the source system remains in production. Once the standby database is created, Oracle Data Guard automatically maintains the standby database by transmitting primary database redo data to the standby system where the redo data is applied to the standby database. When the target standby database is ready to go into production, use the Active Data Guard switchover feature to switch the standby database to the primary database.
Oracle Data Guard transport services are also used by other Oracle features such as Oracle Streams and Oracle GoldenGate for efficient and reliable transmission of redo from a source database to one or more remote destinations.
For more information including access to the documentation, go to https://www.oracle.com/database/technologies/high-availability/dataguard.html
The applications on your system might include utilities that augment data migration.