Re: RMAN

On Aug 28, 5:36 am, Cristian Cudizio <cristian.cudi..._at_yahoo.it> wrote:
> On 27 Ago, 20:19, artme..._at_yahoo.com wrote:
>
>
>
> > Hi,
>
> > We're setting up RMAN and configuring our environment. We are on
> > Oracle 10gR2. I'm having trouble understand these commands:
>
> > CONFIGURE DEVICE TYPE DISK BACKUP TYPE TO COMPRESSED BACKUPSET
> > PARALLELISM 20;
> > CONFIGURE CHANNEL DEVICE TYPE DISK FORMAT '/disk1/ora_df%t_s%s_s%p';
>
> > They both specify disk. But, can they be combined into one command?
> > The documentation is really not specific on this. They show different
> > variants of the above, but I did not find anything on a combination of
> > the commands. If we can do it in one command, it makes more
> > sense......
>
> > Thank you.
>
> If you seehttp://download.oracle.com/docs/cd/B19306_01/backup.102/b14194/rcmsyn...
> you can configure different formats for different channels (for
> different backup pieces and one backupset)
> while "parallelism" and "compressed backupset" are "global" settings
> for a backup set
> you can configure different settings for different channells that
> write different backup sets.
> Hope this helps.
>
> Regards,
> Cristian Cudizio
>
> http://cristiancudizio.wordpress.com

Thanks Cristian. I appreciate it. It helps me to understand all that. I just need to see how different configurations will affect performance. For example, do you use a certain level of parallelism when you have certain number of disks, or size of database. Same with maxsetsize and maxpiecesize, filesperset, etc......

Thanks! Received on Thu Aug 28 2008 - 09:13:38 CDT