Re: Way to much log switching!!!

From: Tim Gorman <tim_at_sagelogix.com>
Date: Wed, 30 Jun 2004 22:12:05 -0600
Message-ID: <BD08EB35.17860%tim@sagelogix.com>

Use direct-path INSERTs for loading, then use NOLOGGING to reduce redo generation from that. Then, use RMAN incremental backups to backup the just-loaded data to make it recoverable. Or not.

If you are unable to use direct-path INSERTs for loading, then something is wrong with the design of the data warehouse. Non-volatile time-variant data in partitioned tables is ideally suited for loads using direct-path INSERTs. In Oracle9iR2, direct-path INSERTs also enable the possibility of using table compression.

on 6/30/04 2:50 PM, Barbara Baker at barbarabbaker_at_yahoo.com wrote:

>
> Brings up a question that we are facing.
>
> If we turn on archive logging in our warehouse, we
> generate tons of archive logs during dataloads that we
> probably do not need.
>
> If we do not turn on archive logging, our options for
> using RMAN are less attractive.
>
> What are other sites doing about this dilemma??
>
> Barb
>
>
> --- DENNIS WILLIAMS <DWILLIAMS_at_LIFETOUCH.COM> wrote:

>> Mark
>>    Do you mean that you are filling logs every 1-2
>> minutes every hour of the
>> day and night, or is this some type of peak that
>> occurs for a few minutes
>> each day? Some sites operate their ODS in
>> noarchivelogmode. Have you
>> considered that?

>
>
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Received on Wed Jun 30 2004 - 23:07:45 CDT