I don’t think it is as bleak as Chris makes it sound.
I have a variety of clients that have ExaCC and other clients where from the
DBA perspective we are the ExaAdmins and the DBAs have no access to the
internal of the Exadata or root on the VMs or physicals, so not much different
than ExaCC in that a separate organization is in charge of the Exadata.
I have found Exadata support to be actually a little better than regular DB
Support in that we can normally get to the base teams quickly to determine root
cause to a problem.
Patching is patching when it comes to VMs on Exadata, which I also have clients
with on-prem Exadatas that run VMs no different than ExaCC.
You simply need to read the manuals and Support notes and in your DBA world it
is mostly the same except when it comes to resource plans and query
tuning/memory sizing that there are Exadata specific items you need to know
about and act on accordingly.
From: oracle-l-bounce@xxxxxxxxxxxxx <oracle-l-bounce@xxxxxxxxxxxxx> On Behalf
Of Keith Moore
Sent: Tuesday, October 6, 2020 12:06 PM
To: Chris Taylor <christopherdtaylor1994@xxxxxxxxx>
Cc: Mladen Gogala <gogala.mladen@xxxxxxxxx>; leroy.kemnitz@xxxxxxxxxxxxxxxxxx;
oracle-l@xxxxxxxxxxxxx
Subject: Re: Exadata training suggestions
I agree with Chris that Exadata Cloud at Customer is a completely different
animal. I do not know of any specific courses for it. The manuals may be your
only source.
I agree with Mladen on the Expert Oracle Exadata book. You will get some good
understanding of Exadata specific features such at HCC and Smart scans which
apply to C@C as well as to on-premises Exadata.
Exadata training from Oracle is also pretty good but not up to date and AFAIK
doesn’t include Cloud at Customer or OCI.
Basically, the Oracle training and Exadata book will tell you how things work
under the covers but do not tell you HOW to do specific things like backing up
the database, creating a database, etc where it’s done completely different on
Cloud at Customer.
Keith
On Oct 6, 2020, at 1:33 PM, Chris Taylor <christopherdtaylor1994@xxxxxxxxx
<mailto:christopherdtaylor1994@xxxxxxxxx> > wrote:
I will say that Oracle Exadata Cloud @ Customer (Exa CC) is quite a bit
different than Exadata on-prem *and* also different than Exadata in the cloud.
(We're a C@C customer)
With Exa CC, you only have access to the DomU (the VMs which are your
hostnames).
Patching is quite the nightmare.
Support is quite rough for any issues outside the DomU as you have to engage
CloudOps - and may have to engage CloudOps for DomU stuff but not usually.
So support model ends up looking something like this:
Customer=>Create SR
Customer=>Talk to first level Rep that picks up ticket
Customer=>Explain to Rep you're a C@C customer (even though you put it in the
ticket and it should be obvious)
Oracle SR Rep=> Tells customer to wait while they enage CloudOps
Customer=>Waits
CloudOps=>Does "x" and finds "y"
CloudOps=>Tell customer "Y"
Oracle SR Rep=>Tells / repeats CloudOps info to Customer
Customer=>Tells Oracle SR Rep to tell CloudOps "Z"
[rinse & repeat]
I'm not 100% convinced Oracle will be able to successfully make Cloud @
Customer work long term without some serious & severe changes. And if there
has _ever_ been an over-engineered product at Oracle (I'm looking at you OEM) ,
Exadata has it in spades.
Chris
On Tue, Oct 6, 2020 at 1:37 PM Mladen Gogala <gogala.mladen@xxxxxxxxx
<mailto:gogala.mladen@xxxxxxxxx> > wrote:
I would start by reading "Expert Oracle Exadata" by Kerry Osborne & Tanel
Poder. Exadata is RAC with a twist, but mostly RAC. If you have an experience
with RAC, not just ASM, you are well equipped to deal with Exadata. A book by
two Oracle aces of spades, in addition to your RAC experience, should be enough
to get you going. It's an excellent book:
https://www.apress.com/gp/book/9781430233923
There is also the 2nd edition of this book with Martin Bach as the principal
author:
https://www.apress.com/gp/book/9781430262411
I haven't read the 2nd edition but Martin Bach is a prolific author and his
books are usually good. This one should be no exception.
Regards
Regards
On Tue, 2020-10-06 at 15:54 +0000, Kemnitz, LeRoy wrote:
All –
I am completely new the Oracle Exadata env. We are planning on doing the
Exadata Cloud at the Customer. I have been running Oracle database and ASM on
Linux for years, version 12.1 and 12.2 currently. We are planning on
consolidating onto the Exadata.
I am looking for suggestions for good training options. These options need to
be low cost and online.
Any ideas??
LeRoy
--
Mladen Gogala
Database Consultant
Tel: (347) 321-1217