Re: RAC, CFS and online backups

Just wanted to say that in 9i Release 2, RAC and RMAN work very nicely together. I've yet to encounter any problems at all (not to say that there aren't any lurking... just that in quite extensive testing, I've yet to find them).

RMAN was a dog's breakfast with 8i's Parallel Server, largely because it was oblivious to the existence of multiple instances unless you explicitly told it, and manually took over the responsibility for backing up all constituent parts yourself.

With RAC, RMAN understands the concept of a cluster perfectly well.

Regards
HJR "Paul Brewer" <paul_at_paul.brewers.org.uk> wrote in message news:3df005cb_3_at_mk-nntp-1.news.uk.worldonline.com...
> "PdV" <piet.de.visser_at_cmg.com> wrote in message
> news:6de2ae57.0212051050.3c52e0d3_at_posting.google.com...
> > Group,
> >
> > Running a RAC database (9.2) on an OCFS clustered system.
> > Works surprisingly well.
> > Having a real file-system is very comfortable.
> >
> > Question:
> > Can we revert to using "conventional" online backup
> > instead of using RMAN to take care of backup ?
> >
> > e.g. would this still allow me to take backups:
> > SQL> alter tablespace data_m begin backup ;
> >
> > nb: we do realize we need archive-logs from ALL instances to
> > perform recovery!
> >
> > Thanks for any feedback,
> >
> > Regards,
> >
> > Piet.de.visser_at_cmg.com
>
> Hot backup? Alter tablespace dah dah dah one at a time and do the
business?
> Yes, of course you can. And in your position, I'd feel reasonably
> comfortable, provided I had all the logs.
>
> Personally, I'd shut the whole thing down now, and take a cold backup. But
> then, I'm a conservative old b*****. And I have **absolutely no evidence**
> to support this view, but I'd be nervous about combining RAC and RMAN. One
> or the other, yes, but these new features always seem to have issues once
> one tries to combine them.
>
> But then again, as I implied, I'm a cynic (and as such I doubt that Mr.
> Ellison would hold me in much regard). You might be better off canvassing
> the views of others before heeding my advice.
>
> Regards,
> Paul
>
>
>
Received on Fri Dec 06 2002 - 14:51:48 CST