Re: Oracle backup - RAC

DA Morgan <damorgan_at_exesolutions.com> wrote in message news:<3E5F9293.DA20AC87_at_exesolutions.com>...
> "Howard J. Rogers" wrote:
>
> > On Fri, 28 Feb 2003 09:31:58 +0000, Mike wrote:
> >
> > > I have been told that if I have Oracle RAC on a Solaris platform (raw
> > > partition) I HAVE to use RMAN for backup.
> > >
> > > Is this right?
> >
> > You don't *have* to, no. BUt unless you're a dab hand with dd, how do you
> > propose copying the datafiles somewhere safe? RMAN is really a rather
> > nifty tool when it comes to dealing with RAW.
> >
> > Regards
> > HJR
>
> Many of my students are asking questions like "What is RAW", how does it
> differ from the norm, how can I do it on my Windows/Linux/etc. machine.
>
> I am looking for a good resource to point them to as it is not part of the
> curriculum and I have no time in my classes to add this material. Any
> recommendations will be appreciated.
>
> Daniel Morgan

Daniel,

Back in the day of OPS, oracle provided info as to how to create raw partitions:
http://download-west.oracle.com/docs/cd/A87860_01/doc/paraserv.817/a76934/chap2.htm#1000139

<snip>
 Windows NT

Windows NT does not support a true distributed file system. Therefore, data files, control files and redo log files reside on unformatted raw devices.

An extended partition points to raw space on the disk that can be assigned multiple logical partitions for the database files.

Because raw devices on Windows NT do not have a file name or drive letter associated with them like a regular file system, an extended partition is first created, which points to raw space on a disk. Multiple logical partitions are then created and assigned symbolic link names using the following format:

\\.\symbolic_link_name.
</snip>

SuSE Linux has published a white paper on the lvm supplied with their distribution. Check page 20 for hints on raw files with Oracle. ftp://ftp.suse.com/pub/suse/i386/supplementary/commercial/Oracle/docs/lvm_whitepaper.pdf

hth,

Paul Received on Sun Mar 02 2003 - 13:12:26 CST