Send the following on WhatsApp
Continue to ChatOracle 11gR2 Dataguard using Duplicate Active Standby https://easyoradba.com/2011/06/28/oracle-11gr2-dataguard-using-duplicate-active-standby/
Oracle 11gR2 Dataguard using Duplicate Active Standby https://easyoradba.com/2011/06/28/oracle-11gr2-dataguard-using-duplicate-active-standby/