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diff.backup - OLTP/OLAP

Posted on 2011-02-18
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Last Modified: 2012-05-11
is diff backup better or adviced for OLAP (where there are batch processing and bulk inserts) because it will be easy for SQL to track what has changed since last FULL backup, instead of OLTP (like amazon.com)
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Question by:anushahanna
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rocky_lotus_newbie earned 375 total points
ID: 34928983
It depends on the data recovery requirements.

In OLTP when there are multiple pages in the database updated, the differential backup tends to be considerably huge which is not the case in OLAP. (The Log backups also might be huge because of the transactions)

However, data recovery is needed in both environments.

Skipping differential backups is not advisable in most cases. Diff backups help in making the data recovery process faster compared to the log backups.

Thanks,
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by:anushahanna
ID: 34929014
>>Skipping differential backups is not advisable in most cases. Diff backups help in making the data recovery process faster compared to the log backups.

you mean Full backup+diff backup+tran log backup is faster than Full backup+tran log - and only for OLAP (where there are batch processing- huge inserts etc instead of individual transactions)
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by:Aaron Shilo
Aaron Shilo earned 125 total points
ID: 34932755
hi

i think what you should do is read this : http://technet.microsoft.com/en-us/library/cc180782.aspx

and try to develope a backup scheme relevant for your needs and limitations.
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by:anushahanna
ID: 34949742
thanks
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