Re: Upgrade legacy EBS

Posted by ErmanArslansOracleBlog on Mar 13, 2023; 7:32am
URL: http://erman-arslan-s-oracle-forum.124.s1.nabble.com/Upgrade-legacy-EBS-tp11713p11714.html

You can do it all in one-go (if you have the required downtime availability)
If you don't have that tolerance for the downtime, you may go with upgrading the DB first.. (this is what I recommend if you will do this task partially) Note that; in that case, you will do your test 2 times.. The project will be 2 phases and you will do your tests 2 times, one time for the DB upgrade and one time for the Application upgrade.

Recently did the same upgrade. We had a 64 hours downtime and upgraded both the database to 19C and Apps to 12.2.11 in one go.

So it depends on your requirements and choices.