Re: Extended RAC:11G R2

  • From: K Gopalakrishnan <kaygopal@xxxxxxxxx>
  • To: avadhanimys@xxxxxxxxx
  • Date: Thu, 5 Aug 2010 11:25:09 -0500


I have implemented extended RAC for few customers and it is not as
complex as you feel. It is just another type (or special type?)  of
configuring RAC with dual storage arrays. Its a great solution if your
application is demanding  for near 100% availability.

Whats the distance b/w your data centers? Extended RAC works well
within 50 miles and you will have an additional 1ms latency for every
100 miles (due to speed of light factor). Have a look at  chapter 15
of my RAC book, or contact me offline. Can provide you additional

In short, Extended RAC  works well if configured rightly.


On Thu, Aug 5, 2010 at 5:05 AM, Avadhani mys <avadhanimys@xxxxxxxxx> wrote:
> Hello Gurus,
> Has anyone implemented extended RAC, please let me know the pro's and con's
> and any useful links would be really helpful.We are in the process of
> finalizing proposal to implement extended RAC.
> Thanks in Advance
> --Avadhani

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