Definition of irrigation. 1  1 : the therapeutic flushing of a body part with a stream of liquid. 2  2 : the watering of land by artificial means to foster plant growth.
Answer: To start with, Oracle Real Application Clusters (RAC) are a database system involving a configuration of multiple hosts or servers joined together with clustering software and accessing the shared disk storage structures.
Oracle Exalytics is a new BI machine designed specifically for Business Intelligence and Enterprise Performance Management. With a massive 1TB RAM and 40 CPU cores, this machine can and will take performance to a level never seen before.