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.
RAC Technologies Matrix for Linux Platforms. 1  Oracle will support the Oracle software on clusters comprised of RAC compatible technologies and supported software combinations. 2  Please consult your hardware and software vendors as not all vendors may choose to support their hardware or software in every possible cluster combination.