RAC Pre-requisite Problem

Question

I would like to set up a RAC environment between 2 different sites. They are physically seperated in 2 different district. The ISP of machine A used is different from the ISP of machine B used. Do they need to be the same ISP in order to be RAC? if yes, why?
Any solution for this? Thanks.

Answer 1

If you can implement a cluster solution over the distance then just 2 machines could do the job. As I had never afford a HP box with OpenVMS - cannot comment.
As these two machines are going to be using THE SAME STORAGE, where will it be located and how will it communicate - IE Fibre Channel?
IMO use a cluster at site A with a Standby DB at site B or Multimaster replicated DB between site A & B. You do say words to the effect that you want all 3 hosts to be doing work.
If the work at 'B' is just to run reports then a 'standby' DB will do. If You need to have clients connecting and updating data - use replicated.
Have one site produce odd sequence numbers and the other even numbers and use them as your primary keys.
Maybe you should consult you local Oracle Rep. Note: A DB in 'standby' waiting for a disaster still has to have it's own license (even though the primary is unavailable during disaster). So if you need to buy another license, get your money's worth and see what Oracle support reccommend.