I’m looking for some information about whether PostGreSQL EDB can provide balance between nodes similarly to the way Oracle RAC does this.
AFAIK, it does not.
The closest question / answer combination I could find to this subject follows:
However, that question and its answers at the above link discuss failovers, not load balancing.
I've also reviewed the e-booklet here:
http://www.enterprisedb.com/postgres-plus-edb-blog/gary-carter/comparing-edb-postgres-and-oracle
The ol' internet and a search on serverfault.com have not given me much joy, so far. I keep coming up with generic guidelines or corporate leaflets (without detailed examples of load balancing behavior) on either product.
So, for any of you who might have used PostGreSQL EDB, does it provide load balancing among nodes in a similar way to Oracle RAC?