From: "Robert Comer" 

>(For the record, Microsoft does
> NOT charge for licenses for standby boxes.)

I'm not so sure of that, at least for the OS, don't know for sure about SQL
Server, but wouldn't that depend on what kind of license you bought to
begin with?

- Bob Comer



"Ellen K."  wrote in message
news:11nva1dh26r1vtult03t58ors3e8aa3fii{at}4ax.com...
> Well, Mike suggested OpenVMS and you guys screamed when I said I was
> looking for an availability / disaster recovery solution for my SQL
> Server databases.  So I was just pointing out that you also didn't
> select something that didn't support the other pieces of your solution.
>
> The latest for Oracle is that we are using something called DataGuard.
> I haven't seen any documentation but it sounds like continuous
> transactional replication with the subscriber box automatically knowing
> if and when it has to take over.  The part that sucks bigtime is that
> ORACLE CHARGES FOR DOUBLE LICENSES IN THIS CASE, i.e. you have to pay
> for full licensing for the standby box.  (For the record, Microsoft does
> NOT charge for licenses for standby boxes.)
>
> I asked whether you were using the ESB to do your replication because
> when I read your previous post a light went on that actually an ESB
> could be used to create multiple "master" copies of the
data, i.e. since
> what it does is send messages, and the number of message receivers is
> not limited, you could have two (or more) boxes listening for "message
> to Oracle database x".  However, that would only work if ALL
> modifications to the data were made via the ESB, which to me seems kinda
> convoluted, but I guess it would certainly be possible.
>
> It also occurred to me that I guess we need two instances of Sonic also,
> because if a whole location is taken out due to some giant disaster, and
> that location is where Sonic is, then duplicate databases are lovely but
> we still can't work.  However, how that could be sync'd I have no idea.
>
> On Mon, 13 Jun 2005 10:18:03 +0100, Adam 
> wrote in message :
>
>>Ellen K wrote:
>>> My point was that you selected an availability / disaster recovery
>>> solution
>>> that works with all the other pieces of your solution.
>>>
>>
>>The foundation was Oracle & how best to create identical replicas of the
>>data where each can be the master & where there are serious implictions
>>wrt the non-availability of the system as a whole.
>>
>>> Does your comment mean you are using the ESB to do the replication?
>>>
>>>
>>That requires a long answer which will use more than a few acronyms.
>>
>>
>>Adam
>

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