Re: Suitable high availability solution?

From: DA Morgan <damorgan_at_psoug.org>
Date: Sun, 04 Mar 2007 13:13:42 -0800
Message-ID: <1173042822.271734@bubbleator.drizzle.com>

Niall Litchfield wrote:
> gazzag wrote:

>> On 2 Mar, 10:00, "sybrandb" <sybra..._at_gmail.com> wrote:
>>> Oracle Dataguard. Comes with Oracle and is free
>> If you purchase the Enterprise Edition, the above statement is
>> correct.

>
> Actually Gareth, I don't really consider it correct even then, it's true
> that the DataGuard portion doesn't come with a separate price tag, but
> the second server will also have to be licensed at EE price rates
> (including the per-core pricing that no longer applies to SE). That can
> be pretty expensive.

Please correct me if I am incorrect but I don't believe that is the case. Last time I checked the failover server only had to be licensed if it was open and actively applying logs and even then only after 9 days of continuous use in a calendar year.

Depending on the SLA, and how long it would take to apply the logs one could have a failover site with the operating system up, Oracle mounted exclusive but not open, and then open, apply the logs, and then restart before end-user connections and the clock starts ticking.

Whether that would work is more a question of how long one can afford to be down before violating their SLA.

Again, if my understanding is incorrect, I'd appreciate clarification.

Thanks.

-- 
Daniel A. Morgan
University of Washington
damorgan_at_x.washington.edu
(replace x with u to respond)
Puget Sound Oracle Users Group
www.psoug.org

Received on Sun Mar 04 2007 - 15:13:42 CST