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Home -> Community -> Mailing Lists -> Oracle-L -> RE: Backups in a DW Environment
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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Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services ---------------------------------------------------------------------To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). Received on Fri Jan 09 2004 - 15:34:26 CST
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