Just be careful on the number of channels you allocate.  From what my DBAs 
have told me and from our testing, Oracle is very CPU intensive when building 
the streams and can easily swamp a system if you allocate too many channels.

On Thursday 06 April 2006 11:18, Alley, J B wrote:
>  Thanks David for the response.
>
>  Unfortunately I do not have tape devices that I can dedicate to the
> Oracle backups.
>
>  As matter of fact your answer was the same as supports who called right
> after I received your response.  However, after talking to them for a
> few minutes I learned a very good piece of information.  In the rman
> script you have to allocate channels, and I was under the impression
> that each channel was represenative of a tape device.  When actually
> each channel represents a save stream.  So if you want an Oracle backup
> to use more than one tape device without restricting the target
> sessions; simply allocate more channels in your rman script.
>
> Again thanks for the info.
>
> -----Original Message-----
> From: David Dulek [mailto:ddulek AT fastenal DOT com]
> Sent: Thursday, April 06, 2006 10:27 AM
> To: Legato NetWorker discussion; Alley, J B
> Subject: Re: [Networker] Parallelism configuration with NMO 4.2
>
> You need to change the save streams per device on the drives themselves.
> Not very useful unless you have dedicated drives for the Oracle backups.
>
> On Thursday 06 April 2006 10:07, J Alley wrote:
> > We are running Networker 7.3 on a Solaris 9 server, and we just
> > installed the NMO on a Solaris 9 server running Oracle 9i.
> >
> >  We have the rman backup working just fine to a single tape device.
> > We are trying to make the backup use more than one tape device to
> > improve the backup time.  The save group parallelism is set to 0 so
> > that the number of tape devices needed will be determined by the
> > number of save streams.  We have tried changing the number of
> > filesperset in the RMAN script, and we tried allocating additional
>
> channels.  Nothing seems to be working.
>
> > Is anyone else running RMAN backups to multiple tape devices?  If so
> > can you share how you made it work?
> >
> > Thanks
> > J
> >
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