Flashback Database using Data Guard environment

11.2.0.3/RHEL 5.8

I came across several documents that speak of FLASHBACK DATABASE configuration in dataguard environments. We have several
Physical DBs sleep (Single Instance & RAC) running in our shop. I would like to know two or three major (common) use of FLASHBACK DATABASE data child care settings.

I understand one of the uses mentioned in the below URL ie. a logical error recovery

http://uhesse.com/2010/08/06/using-flashback-in-a-Data-Guard-environment/

I would like to know what are the other major/common use of Flashback Database River in environment DataGuard

A few other uses:

(1) flashback allows you to test your DR. So you can activate your watch. Test the connectivity of network/applications and features on your recovery site and when done return the database to a physical standby. It must however ensure that this is allowed in your environment. In some places, I worked, it would be a big no, no, because they have no needs of data loss. However some companies that will allow as long that the watch is delivered in place for some time.

(2) in the case that you do a failover for a reason, but what has been the main site would then become available, you can flashback what has been your primary to make the eve rather than re-instatiating the database from scratch.
For example. You have a power failure on your main site if perform you a failover and your watch becomes the principal. Once it's your main site is back online, you can convert your previous primary in a day before making a full return/restoration (or any method you choose) to recreate your standby again. However you also have the option to use flashback on this database and then convert it to a watch because it would be potentially faster than the re-instantiation of the day before.

Tags: Database

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