Re: in-memory option - worth it?

From: Michael Brown <dba_at_michael-brown.org>
Date: Thu, 15 Apr 2021 20:59:03 -0400
Message-Id: <7BEB8416-E864-474F-BAFD-C7238C27E0AB_at_michael-brown.org>


In memory is the worst named option that Oracle has put out in my opinion. Without knowing what the database is used for, the question of should I get it is not really possible to answer.

Column Store or Column Store Cache would have been a better name. The option will not do much for an OLTP system. OLTP transactions will use the same buffer cache they always have, but a table marked for in memory will also be maintained organized by columns rather than rows but only in memory (hence the name) which means aggregate queries will be vastly improved. Read Jonathan’s blog entries that have already been mentioned. Blogs.oracle.com also has a blog from the in memory group.

--
Michael Brown



> On Apr 15, 2021, at 12:10 PM, Jeff Chirco <backseatdba_at_gmail.com> wrote:
>
> 
> Hey curious if any have the In-Memory option and would it be worth it? We are looking to increase our CPU footprint on our server and think about maybe trying to squeeze this in if the discount is right. Although this is the most expensive option. We are currently a small server, only 4cpu going to 8, but we also have a DR server which would stay on a 4cpu server but I know it also needs to be licensed.
>
> What time of systems is it best for? Any good blogs on it?
>
> Thanks,
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Received on Fri Apr 16 2021 - 02:59:03 CEST

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