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18c DBUA takes long time (8 hrs) to Upgrade the database if user tablespaces are kept in read only mode (Doc ID 2553682.1)

Last updated on OCTOBER 09, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 18.4.0.0.0 and later
Information in this document applies to any platform.

Symptoms

Oracle18c upgrade takes long time (in this case 8hr) to upgrade from 12.1.0.2 to 18.0.0.0 oracle version when user tablespaces are kept in Read Only mode 

Changes

Choose to put user table spaces in READ ONLY MODE during upgrade

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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