Re: RMAN Compression experiences
- From: "Suresh Chaganti" <chaganti.suresh@xxxxxxxxx>
- To: oracle-l@xxxxxxxxxxxxx
- Date: Tue, 15 Jan 2008 15:56:53 -0600
My experience is it depends whether the system is CPU bound or I/O bound.
In my last gig, there were plenty resources and compression ran fast and
disk space was consumed less. And even though, CPU consumption was high
becuase of compression, it was not adversely affecting generall performance
of the application.
In my new project, the system is already CPU bound with hitting 100%
utilization regularly ( we are investigating addition of node /cpus) and we
actually removed compression to have it complete faster. And the perforamnce
did improve a bit.
Regards
Suresh
On 1/15/08, Robert Freeman <robertgfreeman@xxxxxxxxx> wrote:
>
> If you look at other postings on this forum I've been advocating the
> benefits of RMAN compression for some time! :-)
>
> Robert
>
> Robert G. Freeman
> Author:
> Oracle Database 11g New Features (Oracle Press)
> Portable DBA: Oracle (Oracle Press)
> Oracle Database 10g New Features (Oracle Press)
> Oracle9i RMAN Backup and Recovery (Oracle Press)
> Oracle9i New Feature
> Blog: http://robertgfreeman.blogspot.com (Oracle Press)
>
> ----- Original Message ----
> From: Jack van Zanen <jack@xxxxxxxxxxxx>
> To: j.miranda@xxxxxxxxxxxx; oracle-l@xxxxxxxxxxxxx
> Sent: Tuesday, January 15, 2008 12:30:36 PM
> Subject: RE: RMAN Compression experiences
>
> Nope, similar experience as you have
>
>
>
> Jack
>
>
>
> *From:* oracle-l-bounce@xxxxxxxxxxxxx [mailto:
> oracle-l-bounce@xxxxxxxxxxxxx] *On Behalf Of *Juan Miranda
> *Sent:* Wednesday, January 16, 2008 4:18 AM
> *To:* oracle-l@xxxxxxxxxxxxx
> *Subject:* RMAN Compression experiences
>
>
>
> Hi
>
>
>
> I tried RMAN compression and it seems to work fast (if you use parallel
> channels) and very eficiently.
>
> I get a compress ratio of 10 to 1.
>
>
>
> Anyone have some negative experiences (bugs,etc.) working with it ??
>
>
>
>
>
> Thanks.
>
>
>
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