Re: Active Dataguard -- Cascade Standby or not

From: Gaja Krishna Vaidyanatha <>
Date: Mon, 5 Dec 2011 11:51:33 -0800 (PST)
Message-ID: <>

Hi Raj,
I will share the results when they are available. I currently don't blog, although have pondered about it many times. Just need to find the time to put content on a regular basis that is valuable to others, rather than using it as a "personalized rant platform" :-)  


Gaja Krishna Vaidyanatha,
CEO & Founder, DBPerfMan LLC

Phone - +1-650-743-6060 Insights:Tales of the Oak Table - Co-author:Oracle Performance Tuning 101 -

 From: rjamya <>
To:; Oracle Discussion List <> Sent: Monday, December 5, 2011 11:04 AM
Subject: Re: Active Dataguard -- Cascade Standby or not  

This would be a good case study Gaja, should we expect a nice blogpost soon ?

On Thu, Dec 1, 2011 at 1:43 PM, Gaja Krishna Vaidyanatha <>wrote:

> Hi Stalin,
> Currently doing an HA & DR PoC using ADG in the "Cascade Configuration" at
> a customer site. Conceptually, we are thinking pretty much on the same
> lines as you are and evaluating the use of the first "SYNC STANDBY" (if I
> may use that term), as the propagator to the other STANDBYs. This takes the
> additional overhead off the PRIMARY and imposes most of the propagation
> load on the SYNC STANDBY (reporting instance), yet optimizing the lag for
> the other STANDBYs. Will post the results when the PoC is complete and the
> results are available.

Received on Mon Dec 05 2011 - 13:51:33 CST

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