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Oracle 18c - How to Downgrade a Single Pluggable Oracle Database ( PDB ) from 18c Database to previous release (Doc ID 2421060.1)

Last updated on DECEMBER 31, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 18.1.0.0.0 to 18.1.0.0.0 [Release 18]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.

Goal

Purpose :

           a. To unplug a PDB from a release 18.0.0.0 CDB, downgrade it, and then plug it in to a release 12.2.0.1 CDB

           b. To unplug a PDB from a release 18.0.0.0 CDB, downgrade it, and then plug it in to a release 12.1.0.2 CDB

Solution

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In this Document
Goal
Solution
 Supported Releases for Downgrading Oracle Database :
 Pre-Downgrade Steps :
 Steps to Downgrade :
 i) Downgrade the PDB
 ii) Unplug the PDB from the CDB
 iii)Plug in the Downgraded PDB

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