Oracle Zero Downtime Migration (ZDM) is the Oracle Maximum Availability Architecture (MAA)-recommended solution to migrate Oracle Databases to the Oracle Cloud.
ZDM supports on-premises databases to be migrated to:
- Oracle Database Cloud Service Bare Metal
- Oracle Database Cloud Service Virtual Machine
- Exadata Cloud Service, Exadata Cloud at Customer, Exadata On-Premises
- Autonomous Database (Logical Workflow only)
ZDM Supports the following backup mediums:
- OCI Object Storage
- Oracle Zero Data Loss Recovery Appliance
- NFS Storage
ZDM can be downloaded from here
https://www.oracle.com/database/technologies/rac/zdm-downloads.html
Oracle ZDM is managed through a command-line interface (CLI) that runs on a dedicated ZDM service host, allowing administrators to control and monitor migration jobs.
Migration Modes
Physical Migration → Uses Data Guard (fast, recommended for similar versions/platforms).
Logical Migration → Uses GoldenGate or Data Pump (needed if endian format differs, or cross-version moves).
Supported Version for the setup
Source => Must be 11.2.0.4 or newer.
Target => Must be 19c (or higher).
Oracle Doc:
https://www.oracle.com/docs/tech/oracle-zdm-step-by-step-guide.pdf
