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How to Downgrade to 12c After Upgrade To 19c Using Flashback database (Doc ID 2887982.1)

Last updated on APRIL 17, 2023

Applies to:

Oracle Database - Enterprise Edition - Version 19.3.0.0.0 and later
Information in this document applies to any platform.

Goal

Goal of this Document is to Downgrade the Database After Upgrading it from 12c to 19.

Downgarde is been Done either due to Failed Upgrade to 19c or Due to Some Performance issue at Application level in 19

Solution

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In this Document
Goal
Solution
 Step 1:- Configure Flashback database in the Source version
 Step 2 :- Upgrade the database to the target version (19c)
 Step 3 :- Flashback to the GRP using the Upgraded /Failed 19c home
 Step 4 :- Open the database using 12c home
 Step 5 :- Take a Fresh Rman backup
References


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