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.
Before you install the Oracle 11g R2 RAC software on your system: 1  Ensure that you have already configured your operating system, network, and storage based on the steps from the previous sections within this document.efore You Begin. Before you install the Oracle 11g R2 RAC software on your system: 1  Ensure that you have already configured your operating system, network, and storage based on the steps from the previous sections within this document. 2  Locate your Oracle 11g R2 media kit.