RE: replication question

From: John Hallas <john.hallas_at_bjss.co.uk>
Date: Tue, 13 May 2008 17:14:38 +0100
Message-ID: <E02CB9B2777CF8459C86C49B48C48EC603FB0415@exchange.bjss.co.uk>

2 valid concerns from the developers.  

I suppose the standard questions would be  

Oracle version

Data volumes

Full schema/database or just a couple of tables

Latency allowed  

I suspect the answer from Oracle would be DG but bandwidth would/might be problem  

Streams is probably the way to go but it does seem a (perhaps unnecessarily) complicated beast    

www.jhdba.wordpress.com  

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From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Jeremy Schneider Sent: 13 May 2008 16:45
To: Oracle-L Freelists
Cc: Weiss, Stephen E (Stephen)
Subject: replication question  

Have a good question from a friend of mine who's not on the list - wondering if anyone else would have input. Reply-all so that Steve can see the replies too - anyone have additional thoughts about this?

• Forwarded message ---------- From: Weiss, Stephen E (Stephen) Date: Tue, May 13, 2008 at 10:26 AM Subject: RE: General experience question... To: Jeremy Schneider <jeremy.schneider_at_ardentperf.com>

Between two geo-separated RAC databases, say one on west coast, the other on east coast.  

What is the recommended method for keeping both up to date, but not necessarily immediately up to date.  

There's concern from developers that:  

1. Oracle replication between sites would be too slow because it's trigger based and would seriously impact performance, especially during heavy traffic time.
2. Oracle replication is end-of-life for Oracle Streams. We're concerned about streams in that it's quite complex.

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        From: Jeremy Schneider [mailto:jeremy.schneider_at_ardentperf.com]

        Sent: Tuesday, May 13, 2008 11:22 AM         

	To: Weiss, Stephen E (Stephen)
	Subject: Re: General experience question...

	 

	Replication is probably the best Oracle-centric option.  It

depends a lot on the volume of updates and the data types you're using. There are also some third-party solutions available. This would be a great question to post on the oracle-l list too if you wanted some good feedback. Mind if I forward it over there?         

        -Jeremy         

        http://www.ardentperf.com/category/technical

-- 
Jeremy Schneider
Chicago, IL
http://www.ardentperf.com/category/technical



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Received on Tue May 13 2008 - 11:14:38 CDT