Rolling patching is a feature of oracle RAC. Its not unique in EC2.
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On ;
Behalf Of Seth Miller
Sent: Tuesday, January 12, 2016 11:44 AM
To: Adric Norris
Cc: Oracle Mailing List
Subject: Re: oracle on EC2
Andrew, if I need the uptime rolling patching provides in EC2, how else would I
get it if not by running RAC in EC2? Isn't this a use case for running RAC in
EC2?
Adric, I don't mean the frequency. I mean the amount of customers using JVM.
Most of my customers don't use it so they disable it and don't bother applying
the patch. However, I have no idea if my experience reflects the wider customer
base.
Seth Miller
On Tue, Jan 12, 2016 at 11:19 AM, Adric Norris <landstander668@xxxxxxxxx> wrote:
If by quite rare you mean quarterly, then I agree.
On Tue, Jan 12, 2016 at 11:13 AM, Seth Miller <sethmiller.sm@xxxxxxxxx> wrote:
I disagree. Non-rolling patches like OJVM are quite rare.
Would you choose not to use RAC based on this one exception?
Seth Miller
On Tue, Jan 12, 2016 at 8:57 AM, Adric Norris <landstander668@xxxxxxxxx> wrote:
Provided that you don't include the OJVM PSU. That's a pretty big caveat, IMO.
On Tue, Jan 12, 2016 at 8:42 AM, Seth Miller <sethmiller.sm@xxxxxxxxx> wrote:
Rolling patching.
Seth Miller
On Mon, Jan 11, 2016 at 10:37 PM, Andrew Kerber <andrew.kerber@xxxxxxxxx> wrote:
Yes, I can understand how it can be done. But I can't think of any reason why.
Sent from my iPad
On Jan 11, 2016, at 10:25 PM, Thomas Roach <troach@xxxxxxxxx> wrote:
Here is a document from Oracle about running RAC in public clouds.
http://www.oracle.com/technetwork/database/options/clustering/overview/rac-cloud-support-2843861.pdf
Sent from my iPhone
On Jan 11, 2016, at 8:06 PM, Andrew Kerber <andrew.kerber@xxxxxxxxx> wrote:
I just can't think of a use case of RAC on EC2. Can someone enlighten me.
Sent from my iPad
On Jan 11, 2016, at 9:17 PM, Jeremiah Wilton <jcwilton93@xxxxxxxxxxx> wrote:
I wrote this to help people who want to see if RAC on EC2 will work for them.
https://aws.amazon.com/articles/7455908317389540
Jeremiah
Sent from my iPhone
On Jan 11, 2016, at 7:12 PM, soumya das <soumya2home@xxxxxxxxx> wrote:
Hi guys,
Thanks for all the valuable input. I have a question even though its not
entirely related to subject. Is it possible to create a RAC setup on ec2 ? I
did few googling and found that aws still doesnt support it. Has anyone of you
tried it or have any clear picture on this? If you do please share your opinion.
Thanks,
Soumya
On Tue, Jan 12, 2016 at 1:10 AM, Jeremiah Cetlin Wilton
<jcwilton93@xxxxxxxxxxx> wrote:
Right.
This is the license-related doc:
<http://www.oracle.com/us/corporate/pricing/cloud-licensing-070579.pdf>
http://www.oracle.com/us/corporate/pricing/cloud-licensing-070579.pdf
These are the docs to address the hypervisor support issue:
https://support.oracle.com/epmos/faces/DocumentDisplay?id=1901155.1
http://aws.amazon.com/articles/7455908317389540#FAQ1
Jeremiah
_____
From: "Seth Miller" <sethmiller.sm@xxxxxxxxx>
To: "Jeremiah Cetlin Wilton" <jcwilton93@xxxxxxxxxxx>
Cc: "max scalf" <oracle.blog3@xxxxxxxxx>, "Oracle Mailing List"
<oracle-l@xxxxxxxxxxxxx>, "Maris Elsins" <elmaris@xxxxxxxxx>
Sent: Monday, January 11, 2016 11:15:16 AM
Subject: Re: oracle on EC2
Neither of these links reference licensing.
Seth Miller
On Mon, Jan 11, 2016 at 12:55 PM, Jeremiah Cetlin Wilton
<jcwilton93@xxxxxxxxxxx> wrote:
Not really. There's also a doc for that :-)
https://support.oracle.com/epmos/faces/DocumentDisplay?id=1901155.1
I talk about it a little bit here:
http://aws.amazon.com/articles/7455908317389540#FAQ1
Jeremiah
_____
From: "Seth Miller" <sethmiller.sm@xxxxxxxxx>
To: "Jeremiah Cetlin Wilton" <jcwilton93@xxxxxxxxxxx>
Cc: "max scalf" <oracle.blog3@xxxxxxxxx>, "Oracle Mailing List"
<oracle-l@xxxxxxxxxxxxx>, "Maris Elsins" <elmaris@xxxxxxxxx>
Sent: Monday, January 11, 2016 10:50:36 AM
Subject: Re: oracle on EC2
Does this mean that you have to make sure you are running EC2 instances in an
Oracle VM hypervisor?
Seth Miller
On Mon, Jan 11, 2016 at 12:27 PM, Jeremiah Cetlin Wilton
<jcwilton93@xxxxxxxxxxx> wrote:
There's a doc for that:
http://www.oracle.com/us/corporate/pricing/cloud-licensing-070579.pdf
Jeremiah
_____
From: "Seth Miller" <sethmiller.sm@xxxxxxxxx>
To: elmaris@xxxxxxxxx
Cc: "max scalf" <oracle.blog3@xxxxxxxxx>, "Oracle Mailing List"
<oracle-l@xxxxxxxxxxxxx>
Sent: Monday, January 11, 2016 10:20:28 AM
Subject: Re: oracle on EC2
Maris,
How are you licensing these databases?
Seth Miller
On Mon, Jan 11, 2016 at 9:29 AM, Maris Elsins <elmaris@xxxxxxxxx> wrote:
Hi,
We're running a configuration that addresses some of your IOPS concerns and
it's basically one of the architectures from this whitepaper
https://d0.awsstatic.com/whitepapers/aws-advanced-architectures-for-oracle-db-on-ec2.pdf
- We have created our EC2 for Oracle DBs using Oracle Linux 6 (requirement for
Oracle Smart Flash Cache)
- We've set up ASM on multiple provisioned IOPS EBS volumes (SSD) for striping
- We've enabled Oracle Smart Flash Cache on part of the ephemeral instance
store SSD (it doesn't have even the tiny network latency that EBS volumes have,
as they are local). And based on the AWR reports we see this works very well.
And in fact with larger EC2 instances one gets plenty of instance store SSDs
that otherwise are of no big use.)
- We don't rely on EBS volumes' snapshots for backups, as we have a DataGuard
set up and when needed we stop the recovery there and take snapshots from it
(for cloning purposes usually). I'd think this would also work with "ALTER
DATABASE BEGIN/END BACKUP" + simultaneous snapshot of all striped EBS volumes
too.
- We take regular RMAN backups for point in time recovery requirements.
May be this is not exactly what you were looking for as you provided a link
related to RAID configurations, but probably you can still extract something
useful from what I wrote.
regards,
---
Maris Elsins
@MarisElsins <https://twitter.com/MarisElsins>
www.facebook.com/maris.elsins
On Mon, Jan 11, 2016 at 4:44 PM, max scalf <oracle.blog3@xxxxxxxxx> wrote:
Hello all,
This question is related to running oracle database on Amazon Web Service.
Just so i respect everyone's time on here, I would say please ignore this
question if you do not work with AWS.
We are running oracle some 11g and 12c database on AWS EC2 server. Most of the
server have anywhere from 2 -8 EBS Volume attached(general purpose SSD), they
are NOT striped or mirrored. Lately we have been seeing some performance
issue(year end closing) with high IO wait time(60-80 ms per read), for some
mission critical application we have moved the EBS volumes from general purpose
SSD to Provisioned IOPS(PIOPS) and everything seems happy. But now we are
coming back to some of the other application and our sysadmin says instead of
moving everything from general purpose volumes to PIOPS we should just strip
the volumes to get better performance.
I agree with him, but my question if we were to strip the EBS volumes how do we
deal with taking EBS Snapshot and managing them. We rely on them for our DR in
another region. From what i understand about taking snapshot when your EBS
volumes are stripped is that you have to freeze the IO before you do the
snapshot to guarantee EBS snapshot consistency, see below link..
https://aws.amazon.com/premiumsupport/knowledge-center/snapshot-ebs-raid-array/
So i wanted to see what others are doing in the community to achieve higher
IOPS and i am sure quite a few ppl are running oracle on AWS and also I wanted
to find out when they say "Freeze IO", I am assuming putting database in HOT
BACKUP mode is the wrong thing.
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