Hi Senthil,
Sorry for the delay in response!
Well, we have WAN Network to access both the geo locations, also they are load balanced with a load balancer.
So the same Discovery Address/Port you have it configured now?
I am trying to put two IS in cluster in 8.2 but I am not able to install Terracotta neither Coeherence.
Do I need license for both ? Are they free ?
Hi Caseirojp,
Please start reading the thread from start, this is good discussion and pretty clear. We do not need additional licence of Oracle coherence it is built into the installlation already.
Terracotta needs licence. I really do not think many would need Terracotta as normal clustering handles few million transactions easily if the capacity is planned well.
My team did a POC with 8.2 without any additional installation for Oracle Coherence and we are good so far. Yet to go live so keeping fingers crossed, though there are just 3 or 4 packages not more 
Atul
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