Re: RU First or Last?

Hello,

(1) apply the chosen RU to the 19c home before upgrading, or
>

This is an Oracle recommended approach that I always follow:

https://docs.oracle.com/en/database/oracle/oracle-database/19/upgrd/database-preparation-tasks-to-complete-before-upgrades.html#GUID-46F09541-C36A-4790-B3D3-E0E336A7BBC3

Before starting upgrades, update your new release Oracle Database to the
> latest Oracle bundle patch, patch set update (BP or PSU), or Release Update
> (Update), or Release Update Revision (Revision).
>

OJVM is required if that makes a difference
>

It should be present in the 19c home then. There is the OJVM_STATUS pre-upgrade check that fails if OJVM is missing in the new home: Database Preupgrade tool check list. (Doc ID 2380601.1)

Best regards,
Mikhail Velikikh

On Mon, 22 Jun 2020 at 18:20, Charlotte Hammond <dmarc-noreply_at_freelists.org> wrote:

> Hello - quick advise question please! What's the best approach when
> upgrading 12c to 19c? Should I:
>
> (1) apply the chosen RU to the 19c home before upgrading, or
> (2) should I upgrade first and then apply the RU?
>
> This is a basic upgrade with the dbupgrade script (nothing fancy). I
> presume both would work but I'm unsure what the best practice is (OJVM is
> required if that makes a difference).
>
> Thank you!
> Charlotte
>

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