Comments on: Hot Backups, Redo, and Fractured Blocks

By: prafull

prafull — Fri, 25 Jun 2010 04:49:01 +0000

AHH cant be explained in any better way…. thanks

By: Muhammad Imtiyaz

Muhammad Imtiyaz — Tue, 22 Jun 2010 22:43:19 +0000

Hi,

It was a great explanation, thanks a lot. I have a question, as the datafiles headers are freezed while taking backup when the SCNs are updated… For example if hundreds of transactions have performed then how the SCNs are updated. Plz clarify my doubt. It would be great favour to me and other DBA’s.

By: atif

atif — Fri, 11 Jun 2010 07:05:09 +0000

Thank you very much Steve

By: venkat kona

venkat kona — Tue, 27 Oct 2009 21:40:56 +0000

Steve…Thanks for the great explanation…..

By: Sanjib

Sanjib — Wed, 23 Sep 2009 22:41:56 +0000

Its really greate doc regarding fracture blocks during HOT backups.
I have two doubts ,it would be greate if you will clear my doubts:-

1>How to avoide the fracture blocks in HOT backups ?
2>My database crashes during HOT backup,than how to bringup my database ?

By: Sudhakar

Sudhakar — Sat, 05 Sep 2009 17:38:59 +0000

Thanku for giving for great explanation. I doubt was clear with ur explanation.
I have a doubt why extra redo’s are not genarated while taking backup with RMAN.

By: vijay

vijay — Fri, 10 Jul 2009 19:09:34 +0000

Hi nice to see this neat explantaion about the hotbackup and abt fracured blocks ..I have a question ..can u plz let me know why there is more redo generation during the tablespace/database begin backup mode ?

By: abdus

abdus — Mon, 06 Jul 2009 18:44:56 +0000

Hi
i have one more question it would be a great favour for me if u can answer to this question below
Q.My query was running fine yesterday but now it was taken more time to complete what is the reason ?

By: abdus

abdus — Mon, 06 Jul 2009 18:41:11 +0000

Hi
i thanks for the explanation this doubt was in my mind from past 1 year now it got cleared.Really it was excellect explanation.

By: Hundreds of reasons why you might want(or have) to use R-Man! « H.Tonguç Y?lmaz – Oracle Blog

Thu, 02 Jul 2009 13:11:46 +0000

[...] ? | what is BINARY COMPRTESSION ?| what is UNUSED BLOCK COMPRESSION ? « lutz hartmann as sysdba http://www.oraclealchemist.com/oracle/hot-backups-redo-and-fractured-blocks/ Possibly related posts: (automatically generated)Oracle By Example Series for 10g Release [...]