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 RAC. In database computing, Oracle Real Application Clusters (RAC) â an option for the Oracle Database software produced by Oracle Corporation and introduced in 2001 with Oracle9i â provides software for clustering and high availability in Oracle database environments.