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Consider that I don't want use DNS in client side ,But my RAC servers have a DNS for SCANyou can still use VIP to make connectivity even you've configured SCAN.
entry would be same as we were using in 10g.
DB = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = tcp)(HOST = ****)(PORT = 1521)) (ADDRESS = (PROTOCOL = tcp)(HOST = ****)(PORT = 1521)) (LOAD_BALANCE = yes) ) (CONNECT_DATA = (SERVICE_NAME = DB) (FAILOVER_MODE = (TYPE = select) (METHOD = basic) (RETRIES = 20) (DELAY = 3) ) ) )