Oracle Zero Downtime Migration(Oracle ZDM) - Overview
Oracle ZDM is a software solution which allows you to directly and seamlessly migrate your on-premises Oracle Databases to and between any Oracle-owned infrastructure, including Exadata Database Machine On-Premises, Exadata Cloud at Customer (ExaC@C), and Oracle Cloud Infrastructure. Oracle Zero Downtime Migration (ZDM) is designed using Oracle's best practices for high availability. It uses tools like Golden-Gate and Data Guard to keep your database available during migration, and relies on technologies such as RMAN, Data Pump, and database links to move data efficiently and safely — all with minimal downtime. Oracle ZDM offers four different migration methods: 1. Logical Online Migration using Golden-Gate. In logical online migration approach ZDM leverages Oracle Data Pump for the initial export and Oracle Golden-Gate for continuous data replication. Oracle Golden-Gate plays a critical role by capturing and applying real-time changes from the source to the tar...
