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 Database (commonly referred to as Oracle RDBMS or simply as Oracle) is an object-relational database management system produced and marketed by Oracle Corporation.s of July 2010, the database that costs the most per machine-processor among Oracle database editions, at $47,500 per processor. The term per processor for Enterprise Edition is defined with respect to physical cores and a processor core multiplier (common processors = 0.5*cores).