Re: 12c EM Cloud Control Design

From: Niall Litchfield <niall.litchfield_at_gmail.com>
Date: Wed, 24 Jun 2015 15:26:12 +0100
Message-ID: <CABe10sZH96qPFjfRJJRvCsELkidTGh1C5W3-26G3=wEQ4+yrRw_at_mail.gmail.com>

I've read the requirement differently. I'd assumed you'd be buying/configuring new hardware/vms for this. In addition it looks like at least in principle that Site A is primary and Site B is DR. In that case I'd be looking to build a variant of Level 4 HA http://docs.oracle.com/cd/E24628_01/install.121/e24089/ha_intro.htm#BGBICCFF - I don't especially see the requirement for 2 OMS in each site with site A as primary and site B as , though I'd still be setting up the load balancer aliases etc. You will need to configure storage replication for the sw library (though it sounds you've already paid for that cost).

So

Site A

---

VM hosting an OMS (primary behind load balancer) Oracle DB for Repository protected via DG to the remote site. You will have to license EE for at least one of the sites.

Site B

---

VM hosting a standby OMS (behind load balancer, swlib replicated) Standby Oracle DB for Repository protected via DG to the remote site.

You could choose to host the EM repository on an existing licensed server to save costs, but that is a compromise as Peter remarks.

On Wed, Jun 24, 2015 at 2:53 PM, Pete Sharman <pete.sharman_at_oracle.com> wrote:

> You would be far better off with a single EM installation on a 3rd site.
> It is never a Good Idea ™ to have EM installed on a monitored host.
>
>
>
> Pete
>
> [image: Oracle logo]
>
> Pete Sharman
> Database Architect, DBaaS / DBLM
> Enterprise Manager Product Suite
> 33 Benson Crescent CALWELL ACT 2905 AUSTRALIA
>
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> Website: petewhodidnottweet.com
> ------------------------------
>
> "Controlling developers is like herding cats."
>
> Kevin Loney, Oracle DBA Handbook
>
>
>
> "Oh no, it's not, it's much harder than that!"
>
> Bruce Pihlamae, long term Oracle DBA
> ------------------------------
>
>
>
> *From:* oracle-l-bounce_at_freelists.org [mailto:
> oracle-l-bounce_at_freelists.org] *On Behalf Of *Steven Andrew
> *Sent:* Wednesday, June 24, 2015 3:27 PM
> *To:* oracle-l_at_freelists.org
> *Subject:* 12c EM Cloud Control Design
>
>
>
> Hello Everyone,
>
>
>
> We have 2 sites for e.g. A and B, separated by 500 Miles. 2 systems in
> there, one has Data Guard setup, replicating data in performance mode,
> Async. This is a single database instance managed by Oracle GI. Another
> system is a 2 node Standard Edition RAC/ASM and it's data replicated via
> SAN replication to site B. We wanted to manage both systems via 12c EM
> Cloud Control, without having a 3rd site C. Both systems are in 11.2.0.4,
> Linux 6.x.
>
>
>
> I'm trying to come up with a design such that even if one sites goes down,
> minimal actions are performed in other site to get EM to monitor the
> targets which gives a sort of HA. Idea is to have EM/OMS per site and have
> respective site's target register to both sites OMS.
>
>
>
> I believe targets can register to multiple OMS's Or is this even possible?
>
>
>
> Any other ideas/suggestions are appreciated as well.
>
>
> Thanks
>
> Steven.
>

-- 
Niall Litchfield
Oracle DBA
http://www.orawin.info




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Received on Wed Jun 24 2015 - 16:26:12 CEST