Hi Dennis,
On average, we load data weekly. The load time is no
more 40 minutes to an hour. Like I said, we're small
at the moment. We're at about 70GB which includes
temp and undo and growing at the rate of about 2GB a
month.
Consequence of a failure has been discussed with the
developers and users. Developers say that they can
live without the DW for one business day. The users
don't access the database directly so they would not
be affected.
As far as critical data being lost, well if we loose
the database and we have BCVs in place, we can just
reload any data that is missing from the flat files,
so no biggie there.
Also, I take an export of the entire database after a
load.
As far as how much the sys admin knows about Oracle
well... knows enough from a sys admin perspective that
we can converse intelligently but I suspect still
holds to the old myths about Oracle that have been
discussed on this list.
Appreciate your input.
mohammed
- DENNIS WILLIAMS <DWILLIAMS_at_LIFETOUCH.COM> wrote:
> Mohammed - When is this database updated? Once/week?
> Daily? Continuously? If
> there is a failure, what is the consequence of
> returning to the last backup?
> How much critical data will be lost? How will
> recovery times be affected
> with/without archive logging? How much does your sys
> admin know about
> Oracle?
> We have a data warehouse that gets updated
> weekly. The day after the load
> we perform a cold backup. We don't use archive
> logging.
>
> Dennis Williams
> DBA
> Lifetouch, Inc.
> dwilliams_at_lifetouch.com
>
> -----Original Message-----
> Sent: Friday, January 09, 2004 3:25 PM
> To: Multiple recipients of list ORACLE-L
>
>
> Have a question on backups in a DW environment.
>
> Our DW is somewhat small at the moment but projected
> to grow. I seem to be having a hard time trying to
> convince the sys admin that I don't want archive
> logging turned on. To me, it does'nt make much
> sense.
>
> He's proposed using EMC BCV's which I've agreed to
> (and also sounds like a good idea) but also wants to
> turn on archiving. My thinking is why turn on
> archiving if I can restore my DB from last night's
> BCV's and then bring it up to date by re-loading any
> data that was loaded after the BCV split.
>
> Our system is not 24x7 so we can shutdown before the
> BCV split. Also, it's not directly accessed by
> users
> for ad-hoc queries. Automated processes access the
> database and build cubes using Cognos tools. Users
> access these and not the DB directly.
>
> So, again I don't see the need for archive logging.
>
> Any thoughts?
>
> mohammed
>
>
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Received on Fri Jan 09 2004 - 16:29:27 CST
