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Minimal Downtime Cross Platform Migration and 12c Database Upgrade using Data Guard

This note describes the procedure used to perform a minimal downtime platform migration from Windows to Linux as well as a database upgrade from Oracle 11.2.0.4 to Oracle 12c (12.1.0.2).

We create a Data Guard physical standby database using the DUPLICATE FROM ACTIVE DATABASE feature, followed by a switchover and then we activate the standby and make it a primary database. Finally we upgrade the database to 12c using the catctl.pl perl utility with the parallel upgrade option.

By using Data Guard and the 12c command line parallel upgrade utility the entire operation has been performed with database outage of less than 30 minutes.

Read the note …

Updated on June 2, 2021

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About The Author

Gavin Soorma

Oracle ACE Director (only 3 in Australia), Oracle Cloud Infrastructure Architect, Oracle Certified Master Database and Cloud (10g,11g and 12c), Oracle Certified Specialist (GoldenGate, Exadata 11g, Exadata Database Machine and Cloud Service 2017) and Oracle OCP (8i to 12c).

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