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Oracle RMAN 11g Backup and Recovery by Matthew Hart, Robert G. Freeman

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CHAPTER 20RMAN and Data Guard

Many DBAs are already familiar with the functionality known as Oracle Standby Database. It is an architectural feature that adds a little functionality to operations that already take place on your system: the archiving of every single change that happens on a database. The Standby Database started as a simple concept, and although the overall architecture is now referred to as Data Guard, the foundation is still simple: take the archive logs from your production database, move them to another computer that has a copy of that database, and apply the archive logs to the copy. In such a way, Data Guard is able to provide an efficient disaster recovery solution by maintaining transactionally consistent copies of ...

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