Re: Oracle DR Solution

Niall

Yes extended RAC is not good here as it will not only increase complexity but then require more specialized skills. Also my mistake to say No downtime but it is required to have least downtime with any architect. So want to surely rule out Replication/Streams/Golden Gate which will have some extra complexity . Anyway adding cost is not an issue which surely will come with all option which can be Dataguard or Golden Gate or Storage Appliance. So main requirement is best practices with least downtime.

TIA
Sanjay



________________________________
From: Niall Litchfield <niall.litchfield_at_gmail.com>
To: Hemant.Chitale_at_sc.com
Cc: mdinh_at_xifin.com; oracle-l@freelists.org
Sent: Wednesday, August 31, 2011 5:21 AM
Subject: Re: Oracle DR Solution


I'd argue that stretch RAC could easily be seen as a DR solution, and that replication solutions generally can also provide functioning DR. What I didn't see from Sanjay is how DR is defined and what the requirements for DR are. For example if the requirements are 

We must within 5 days of loss of our single data centre be up and running again with data from the night before the failure on our core financial systems only.   

Then an appropriate DR solution will be different from one dictated by

We must within 15 minute of loss of any single system defined in the list below be up and available again with zero data loss and constant service quality

Virtualization can also play a significant role in DR planning, in fact I'd expect this to be how DR is typically done in the next 10 years or so.   


On Wed, Aug 31, 2011 at 1:52 AM, Chitale, Hemant Krishnarao <Hemant.Chitale_at_sc.com> wrote:

 
>Neither RAC  nor   GoldenGate is a DR solution.
> 
> 
>Sanjay has correctly listed the two options  (Active) DataGuard and StorageBasedReplication (with Snapshots that allow opening a database snapshot image).
> 
> 
>Hemant K Chitale
>
>
> 
>From:oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce@freelists.org] On Behalf Of Michael Dinh
>Sent: Wednesday, August 31, 2011 6:44 AM
>To: 'smishra_97_at_yahoo.com'; oracle-l@freelists.org
>Subject: RE: Oracle DR Solution
> 
>With no loss or down time, then I would think RAC/ Golden Gate.
> 
>Michael Dinh
> 
>Disparity Breaks Automation (DBA)
> 
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>From:oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce@freelists.org] On Behalf Of Sanjay Mishra
>Sent: Tuesday, August 30, 2011 3:28 PM
>To: oracle-l_at_freelists.org
>Subject: Oracle DR Solution
> 
>Hi
> 
>I am looking to see what is the best option to have DR solution that can be Primary with no loss or downtime. Looking for best practices even it is expensive solution. Appreciate for any document or link as I am sure lots has done work on it. One of the requirement is that database is around 10Tb and transaction logs will be be not more than 50G in an hour.
> 
>1. Can see 11g Active Dataguard which can be used for Reporting as well as DR solution
>2. Storage Replication
> 
>Rgds
>Sanjay
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-- 
Niall Litchfield
Oracle DBA
http://www.orawin.info

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