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Oracle Data Guard 11gR2 Administration Beginner's Guide by Nassyam Basha, Emre Baransel

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Chapter 5, Data Guard Protection Modes

Pop quiz – precautions for primary database availability issue in maximum protection mode

Q1

Oracle recommends using two physical standby databases on separate locations to overcome this issue. If we don't have two separate locations we can still install two standby databases on the same location or use Real Application Cluster on the standby database and use redundant network between primary and standby database.

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