Failover and rebuild the eve

Hello

To verify if the standby PB works perfectly in case of failure, we go to our database before failover. Swicthover_status replied with swicthover not allowed in elementary school, I decided the procedure below:

1. judgment of the primary DB.

2. turn the main eve

3 perform dml on new primary, when the work is done, the new principal will not be necessary.

Now my task is, if I'm doing a cold backup of db pending before making primary, can I replace the backup to cold after the task so that it behaves like db Eve as it was before? In this case, I don't need to recreate the standby db.

Kind regards

Hello;

Probably not. You have several questions. This method is likely to worse instead of better. If you want to test failover to bring flashback working on the primaries and the sides of the day before.

After a failover, you want to retrieve primary school, the old primary as new secondary. Once it is functional, you get two SYNCHRONIZED servers and perform a failover and primary school and the day before are back the way they should be.

I test short notes here:

http://www.Visi.com/~mseberg/data_guard/Data_Guard_Failover_Test_using_SQL.PDF

Update

What you might consider is the method of cold backup is a false test. This isn't how he'll get into the real world. In my view, that the test should align as closely to what could happen in production as possible.

Failover is also something you should give a lot of thought to. I have databases where if the power failure is about 5 minutes or less the failover is more trouble and more risk than its worth. I have other where they need to be in place 24/7. Ask yourself if you can make a move to the square. What are your other options? Its great to have a failover plan and be prepared, but less use you it the better I say.

Best regards

mseberg

Published by: mseberg on March 27, 2013 07:15

Tags: Database

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