[Info-vax] Oracle RDB 7.1.5 PRECOMP.EXE (ALPHA)

Chris Townley news at cct-net.co.uk
Wed Jan 27 10:19:22 EST 2021


On 27/01/2021 15:03, Phillip Helbig (undress to reply) wrote:
> In article <rurp1s$dif$1 at dont-email.me>, Simon Clubley
> <clubley at remove_me.eisner.decus.org-Earth.UFP> writes:
> 
>> The use of a DSA504: device makes me wonder if they are using shadow sets
>> and treating that as a backup. Well, if so, they have just learned that
>> shadow sets are no replacement for a proper backup, but that lesson only
>> means something if they do something about it.
> 
> True but, modulo issues with open files and so on, which might or might
> not be a problem, one can break a shadow set to get a quick backup which
> one doesn't have to restore---just mount the backup disk (and
> immediately build another shadow set, unless you have more than three
> members so can remove at least two and keep at least two live).  If open
> files are a problem, then they are a problem for other means of backup
> as well.  If one can stop the application, then a
> shadow-set-disk-as-backup is quick and easy.  These days, disks are
> cheap.
> 
Microsoft Volume Shadow Copy is very useful on Windoze

Chris



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