RE: RMAN impact

  • From: "Spears, Brian" <BSpears@xxxxxxxxxxxxxxxxx>
  • To: <cstephens16@xxxxxxxxx>, <sperry@xxxxxxxxxxx>
  • Date: Fri, 10 Mar 2006 11:11:28 -0500

Yes, I have used that as a default..and it has worked wonders. 


-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx]
On Behalf Of Chris Stephens
Sent: Thursday, March 09, 2006 10:35 PM
To: sperry@xxxxxxxxxxx
Cc: litanli@xxxxxxxxx; Oracle-L@xxxxxxxxxxxxx
Subject: Re: RMAN impact

i don't have much experience with it but have any of y'all looked into the
rate option that 'throttles RMAN so that a backup job does not consume
excessive bandwidth on the computer'

if your database is always active this might be something to look into.  10g
has more options where you can specify windows of resource usage and
resource priorities.

On 3/9/06, Steve Perry <sperry@xxxxxxxxxxx> wrote:
> we have a rman backup for 500 GB 9.2 RAC on RHEL3 (3 LTO II drives) 
> that takes 3 hours to complete, but kills the node it runs on.
> io wait % goes to 60%, cpu is low. the server is pretty much 
> unresponsive until it completes.
> We allocate 4 channels and are not using the large_pool or tape slaves.
> We tried the same thing but used Disk (seperate LUN from the database) 
> and the server crashed.
> ----- Original Message -----
> From: Li Li
> To: Oracle-L@xxxxxxxxxxxxx
> Sent: Thursday, March 09, 2006 10:42 AM
> Subject: RMAN impact
> Hi, all,
> I just started to look into RMAN backup and recovery and have a question:
> for example, it takes 2 hours for RMAN to backup the database, how 
> much impact will RMAN have on the database during this 2 hours? Will 
> user be able to access the database during this 2 hours?
> Any comments would be greatly appreciated!!
> Regards,
> -Li


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