What platform is this on?
On some UNIX platforms the file header for the raw device may vary in size. (It has
been a while
since I dealt with raw devices). You may have to use seek= option (dd command) to skip
the header
bytes before actually writing the data using 'dd'.
Or just call Oracle Support.
- Kirti
- Stephen Lee <[EMAIL PROTECTED]> wrote:
>
> Well heck. Nobody else has replied, so I might take a stab at it here. I
> suspect that the format of the data (bits and bytes) required on a raw
> device is different than the format of the data in a file in a file system.
> I'm stretching a bit here, but I think an analogy would be what would happen
> if you dd a file from UFS to NTFS. The data on the NTFS might be a digital
> copy of what was on UFS, but it's format is totally useless in the context
> of NTFS.
>
> > -----Original Message-----
> > From: Gurelei [mailto:[EMAIL PROTECTED]
> > Sent: Thursday, June 19, 2003 1:55 PM
> > To: Multiple recipients of list ORACLE-L
> > Subject: copy a datafile to a raw device
> >
> >
> > hi all:
> >
> > I need to move a SYSTEM datafile from a filesystem
> > to a raw device. I have shutdown the database,
> > copied the file via
> >
> > dd if=system of=/dev/raw
> >
> > renamed the file in the database, but couldn't open
> > the database because of the error: Unknown File Header
> > Version read for file number 1.
> >
> > I tried another dd:
> >
> > dd if=system of=/dev/raw obs=32768 (32K is the db
> > block size), but I got the same error. Can anyone
> > see what else could be wrong with my dd command
> >
> > thanks
> >
> > Gene
> >
> >
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Received on Thu Jun 19 2003 - 15:26:43 CDT
