Re: Creating a Reporting Instance

From: Casey Dyke <cdyke_at_froggy.com.au>
Date: Mon, 26 Nov 2001 11:36:28 -0800
Message-ID: <F001.003CD100.20011126112543@fatcity.com>

Whoops - rereading this and I notice I state "All will receive I, U and D activity". One responder questioned how I could do this w/RO snapshots. Obviously can't. The point I meant to make is I have to manage an initial population of data and then the changes. Fast refresh would be my preference - hence the logs. So, the method I'm leaning toward is simple RO snapshots w/fast refresh. No updateable snapshots required.

There is overhead (an extra insert at least) on the PROD instance associated w/snapshot logs, likewise triggers if I use them. My question is simply what do others do to avoid this overhead (if anything) when handling incremental DML? I can only assume that in very high transaction environments, the logs/trigger approach would reduce commit time and, in turn, application performance. Does this present concern to some?

Any and all comments much appreciated ... and thanks Mark for pointing out my err ...

:-)
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Author: Casey Dyke
  INET: cdyke_at_froggy.com.au

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