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

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Using a snapshot standby database

The snapshot concept was introduced from the 11g Version, which allows the use of a physical standby database in the read-write mode for a short period of time. You can convert a physical standby to a snapshot standby by using either traditional SQL *Plus or using the Data Guard broker and grid control at any time. Even if you convert it to a snapshot standby, it will still receive data continuously from the production database archive, so that in the next conversion from a snapshot to a physical standby it will be used for recovery. In case you have performed recovery at any point in time, the new incarnation will be started. Even though a new incarnation has started, the snapshot standby database will still ...

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