Re: RMAN or Hot Backup
Date: Sat, 11 Apr 2009 06:10:39 -0700 (PDT)
Message-ID: <ce5dc836-055f-4b77-af0f-9313ca6ed146_at_f25g2000vbf.googlegroups.com>
On Apr 10, 9:21 pm, "Bob Jones" <em..._at_me.not> wrote:
snip
> - 1. More redo is generated. This can be an issue on a system that
> - generates lots of redo to begin with.
>
> Just make sure I hear this correctly. Non-RMAN backups cause more redo to be
> generated?
Bob you are making me nervous here.
It is hard to understand how someone who apparently has some amount of experience and some amount of responsibilities for oracle systems does not understand this point and why.
The implications of putting a semi active or active oracle database system into backup mode ( either the whole database or piece by piece ) on the generation of online log activity has been well understood for 10 years and more.
It is certainly for many people still running non rman hot backups "tolerable" additional activiity but it is not exactly something new. Gotta think this was in the 7.3 Loney Oracle DBA book ... Received on Sat Apr 11 2009 - 08:10:39 CDT