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Oracle Data Guard 11gR2 Administration : Beginner's Guide
book

Oracle Data Guard 11gR2 Administration : Beginner's Guide

by Yunus Emre Baransel, Nassyam Basha
June 2013
Beginner content levelBeginner
404 pages
9h 40m
English
Packt Publishing
Content preview from Oracle Data Guard 11gR2 Administration : Beginner's Guide

Oracle Data Guard architecture

The main architecture of Oracle Data Guard 11gR2 includes a primary database, up to 30 standby databases, the redo transport services, (which automatically ship the redo log data from the primary to standby server), and Apply Services (which applies the changes in redo on the standby database). There are of course some background processes special to a Data Guard configuration, which run the services in question.

In a Data Guard configuration, the switchover and failover concepts are also very important. By performing a switchover, it's possible to change the roles of the primary and standby databases and change the direction of the redo shipping. Failover is the option that we must use to open a standby database ...

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Publisher Resources

ISBN: 9781849687904Other