Manpreet,
raw disk is sliced as physical disk so that you can not compress. Do not get confused between DD and RMAN because DD is an OS utility and RMAN is an oracle utility they are totally different.
Regards,
Jalil
[EMAIL PROTECTED] wrote:
OK you can do DD ,but , can you use compression along with DD.What if you have allocated 40-50GB to the database,but in actual only 20GB is used.RMAN can do that.i am not too sure would DD be able to do it.
Manpreet
> You will need to put tablespace in backup mode and use "dd" to copy the appropriate raw device. Note that you can't write a dynamic hotbackup script for raw disk - your script will need to be modified whenever you added a datafile.
> HTH
> Regards,
> -Jalil
> [EMAIL PROTECTED] wrote: What is the best way to implement a HOT BACKUP on an Oracle Parallel Server which is using RAW disks.Please describe the process if possible.I know it has to be RMAN and some MML
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