Re: Upgrading with no patches in the "base"?

This (in my humble opinion) excellent post by Tim Hall - https://oracle-base.com/blog/2020/10/08/upgrades-you-have-to-do-them-when-are-you-going-to-learn-tlsv1-2/ - summarizes the reasons to NOT try to use an unpatched home. I agree - I've never heard of this "unpatched $ORACLE_HOME" strategy.

Patches (RU/RUR/CPU/PSU - a rose by any other name) exist for a reason (grin) - granted they are not always perfect (grimace) and can lead to one dealing with vendor support - in this case Oracle Support.

I would add my +1 to Mark's comment and the previous replies (of course you gentlemen hardly need my endorsement) - this does not make sense...

I don't know if there is a constraint from the application side that prohibits 19c - I recently had an upgrade project to move databases to 12.1.0.2 and when the "Why not 19c?" question was raised the reply was the application that uses the DB had a hard stop regarding compatibility at 12.1 - the prior upgrade to 12c (interpreted 12.2) had to be rolled back.

Thanks,

--Rajesh

On Fri, Jan 8, 2021 at 10:28 AM Mark J. Bobak <mark_at_bobak.net> wrote:

> "They will test this for a while, and if everything is fine, THEN they
> will apply the patch."
>
> And what if everything *isn't* fine? Then they *won't* apply the patch?
>
> Doesn't make sense.
>
> -Mark
>
> On Fri, Jan 8, 2021 at 10:19 AM Noveljic Nenad <
> nenad.noveljic_at_vontobel.com> wrote:
>
>> Hi Michael,
>>
>>
>>
>> That sounds like black magic.
>>
>>
>>
>> If “for a while” implies two different maintenance windows, you end up
>> with two test cycles and two disruptions instead of just one. If you get
>> the opportunity to combat these voodoo practitioners in front of the
>> management, the most persuasive argument would be that the database will be
>> running without security and other critical patches for a while. Who’s
>> going to take that risk?
>>
>>
>>
>> Last but not least, why not 19c?
>>
>>
>>
>> Best regards,
>>
>>
>>
>> Nenad
>>
>>
>>
>>
>>
>> *From:* oracle-l-bounce_at_freelists.org <oracle-l-bounce_at_freelists.org> *On
>> Behalf Of *Michael Kline
>> *Sent:* Freitag, 8. Januar 2021 15:29
>> *To:* 'ORACLE-L' <oracle-l_at_freelists.org>
>> *Subject:* Upgrading with no patches in the "base"?
>>
>>
>>
>> Hearing that an application is going to be upgraded from 12.1 to 12.2.
>>
>>
>>
>> Vendor is saying they will create a “blank, no patched” 12.2
>> $ORACLE_HOME, and then upgrade the database.
>>
>>
>>
>> They will test this for a while, and if everything is fine, THEN they
>> will apply the patch.
>>
>>
>>
>> I’ve never heard of such a thing and have been working on Oracle
>> databases since 1983, version 4.0.
>>
>>
>>
>> Is there logic in this? We try to keep all databases at N-1 on patching.
>>
>>
>>
>>
>>
>> *Michael Kline*
>>
>>
>>
>>
>>
>>
>>
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