RE: 12c EM Cloud Control Design
Date: Wed, 24 Jun 2015 12:56:34 -0700 (PDT)
Message-ID: <ff7fc9f2-2eda-4ee2-b738-01e58bd80b3a_at_default>
Hoping that the idea is to have one active on site A, one standby on site B, rather than both active and targets cross registered… Having dual agents and targets cross registered is possible, but bound to cause problems w/ metrics and such as OMS is the source of truth, not the agents. I wouldn’t recommend this as a method of HA/DR. I would recommend the approved HA configuration Level 4 HA http://docs.oracle.com/cd/E24628_01/install.121/e24089/ha_intro.htm#BGBICCFF
Whether that was your intention or not ;)
From: Pete Sharman
Sent: Wednesday, June 24, 2015 2:27 PM
To: niall.litchfield_at_gmail.com
Cc: postora_at_gmail.com; ORACLE-L
Subject: RE: 12c EM Cloud Control Design
The original poster specifically said:
We wanted to manage both systems via 12c EM Cloud Control, without having a 3rd site C
and
Idea is to have EM/OMS per site and have respective site's target register to both sites OMS.
That specifically precludes buying new hardware, and shows the intention of using each box to have its own EM installation to monitor the other box, to me. J
Pete
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Pete Sharman
Database Architect, DBaaS / DBLM
Enterprise Manager Product Suite
33 Benson Crescent CALWELL ACT 2905 AUSTRALIA
Phone: HYPERLINK "tel:+61262924095"+61262924095 | | Fax: HYPERLINK "fax:+61262925183"+61262925183 | | Mobile: +61414443449 Email: HYPERLINK "mailto:pete.sharman_at_oracle.com"pete.sharman_at_oracle.com Twitter: @SharmanPete LinkedIn: au.linkedin.com/in/petesharman 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
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From: HYPERLINK "mailto:oracle-l-bounce_at_freelists.org"oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Niall Litchfield
Sent: Thursday, June 25, 2015 12:26 AM
To: Pete Sharman
Cc: HYPERLINK "mailto:postora_at_gmail.com"postora_at_gmail.com; ORACLE-L
Subject: Re: 12c EM Cloud Control Design
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 <HYPERLINK "mailto:pete.sharman_at_oracle.com" \npete.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
Oracle logo
Pete Sharman
Database Architect, DBaaS / DBLM
Enterprise Manager Product Suite
33 Benson Crescent CALWELL ACT 2905 AUSTRALIA
Phone: HYPERLINK "tel:+61262924095" \n+61262924095 | | Fax: +61262925183 | | Mobile: HYPERLINK "tel:%2B61414443449" \n+61414443449 Email: HYPERLINK "mailto:pete.sharman_at_oracle.com" \npete.sharman_at_oracle.com Twitter: _at_SharmanPete LinkedIn: HYPERLINK "http://au.linkedin.com/in/" \nau.linkedin.com/in/petesharman Website: HYPERLINK "http://petewhodidnottweet.com" \npetewhodidnottweet.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: HYPERLINK "mailto:oracle-l-bounce_at_freelists.org" \noracle-l-bounce_at_freelists.org [mailto:HYPERLINK "mailto:oracle-l-bounce_at_freelists.org" \noracle-l-bounce_at_freelists.org] On Behalf Of Steven Andrew
Sent: Wednesday, June 24, 2015 3:27 PM
To: HYPERLINK "mailto:oracle-l_at_freelists.org" \noracle-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 -- http://www.freelists.org/webpage/oracle-lReceived on Wed Jun 24 2015 - 21:56:34 CEST