I-Oracle Clusterware isingatha amakheli e-IP (VIP) ye-node ebonakalayo kunethiwekhi yomphakathi. Ama-Node VIP amakheli e-VIP asetshenziswa amaklayenti ukuxhuma kusizindalwazi se-Oracle RAC. Umzamo ojwayelekile wokuxhuma osuka kuklayenti lesizindalwazi ukuya kusizindalwazi se-Oracle RAC ungafingqwa, ngale ndlela elandelayo:
âÃÂâ Iklayenti lesizindalwazi lixhuma KU-SCAN (okufaka i-SCAN VIP kunethiwekhi yomphakathi), ihlinzeka umlaleli we-SCAN ngegama lesevisi elivumelekile.

âÃÂâ Umlaleli we-SCAN ube esenquma ukuthi yisiphi isizinda sesizindalwazi esiphethe le sevisi futhi ahambise iklayenti kumlaleli wendawo noma wenodi endaweni efanele.

âÃÂâ Umlaleli wenodi, olalele ku-node ye-VIP kanye nembobo enikeziwe, ubuyisa isicelo sokuxhuma futhi uxhuma iklayenti kusenzakalo esiku-node yendawo.

Uma amanethiwekhi amaningi omphakathi esetshenziswa kuqoqo ukusekela ukuxhumeka kweklayenti ngamanethiwekhi angaphansi amaningi, umsebenzi owanduleleyo wenziwa ngaphakathi kwe-subnet enikeziwe.

Uma i-node ihluleka, khona-ke ikheli le-VIP lihluleka kwenye indawo lapho ikheli le-VIP lingamukela khona uxhumo lwe-TCP, kodwa alikwamukeli ukuxhumeka kusizindalwazi se-Oracle. Amaklayenti azama ukuxhuma ekhelini le-VIP elingahlali endaweni yalo yasekhaya athola iphutha lokuxhumeka okusheshayo elenqatshiwe esikhundleni sokulinda imilayezo yokuvala yokuvala i-TCP. Uma inethiwekhi lapho i-VIP ecushwe khona ibuya ku-inthanethi, i-Oracle Clusterware iyehluleka ukubuyisela i-VIP endaweni yayo yasekhaya, lapho ukuxhumeka kwamukelwa khona. Ngokuvamile, amakheli e-VIP ahluleka uma:
âÃÂâ Indawo lapho ikheli le-VIP lisebenza khona liyehluleka
âÃÂâ Zonke izixhumi ezibonakalayo zekheli le-VIP ziyehluleka
âÃÂâ Konke ukuxhumana kwekheli le-VIP kunqanyuliwe kunethiwekhi

I-Oracle RAC 12c isekela amanethiwekhi omphakathi amaningi ukuze unike amandla ukufinyelela kuqoqo ngokusebenzisa ama-subnet ahlukene. Insiza yenethiwekhi ngayinye imele i-subnet yayo futhi insizakalo yolwazi ngayinye isebenzisa inethiwekhi ethile ukuze ifinyelele kusizindalwazi se-Oracle RAC. Insiza yenethiwekhi ngayinye iyinsiza ephethwe yi-Oracle Clusterware, enika amandla ukuziphatha kwe-VIP okuchazwe ngaphambilini
I-SCAN yigama lenethiwekhi elilodwa elichazwa kuseva yegama lesizinda senhlangano yakho (DNS) noma Kusevisi Yokuqamba Igridi (GNS) elizungeza amakheli e-IP amathathu. I-Oracle incoma ukuthi konke ukuxhumana kusizindalwazi se-Oracle RAC kusebenzise i-SCAN kuyunithi yezinhlamvu yokuxhuma yeklayenti. Uxhumano olungenayo lulayishwa ngokulinganayo kuzo zonke izimo ezisebenzayo ezinikeza isevisi eceliwe ngabalaleli abathathu be-SCAN. Nge-SCAN, awudingi ukushintsha ukuxhumana kweklayenti noma ngabe ukucushwa kweqoqo kushintsha (amanodi engeziwe noma asusiwe). Ngokungafani nokukhishwa kwangaphambilini, i-SCAN ku-Oracle RAC 12c isekela ngokugcwele ama-subnet amaningi, okusho ukuthi ungakwazi ukudala i-SCAN eyodwa ku-subnet ngayinye ofuna ukuthi iqoqo lisebenze khona.