Re: Is it possible to achieve five 9's without using OPS ?

While it is a little off-topic, you may find this article interesting.

http://www.codesta.com/knowledge/management/uptime_realities/index.jsp

As to 5-9's uptime, it can be done without using OPS or RAC, but RAC's _DO_ make it easier, and, in my experience, affords a much cheaper solution in the big scheme of things.

I've always found OPS to be a big pain in the butt, not only to develop for, but to deploy and maintain, and will do EVERYTHING I can to stay away from it.

$0.02

Bass Chorng wrote:
> In your opinion about HA, is it possible to reach 5 9's
> (99.999% uptime or 5 minutes of down time per year)
> in an Oracle environment, without using OPS or 9iRAC ?
>
> I am only familiar with VCS, but I think it is the same
> regardless what you use as HA platform, that is, if it
> requires a database startup in the fail-over, then it is
> nearly impossible to reach 5 9's.
>
> Database startup on another node (basically from a shutdown
> abort of the original node) to my experience could take over
> 5 minutes alone. HW failures on a large system are usually
> more than once a year.
>
> Replication tools in the market don't give you real time
> sync. Even if they do, the multiple point of failures and
> performance problem present a bigger issue.
>
> I really can't think of a better way than 9iRAC. But I like
> to hear your opinion.
>
> Thanks.
Received on Mon Jul 22 2002 - 19:20:52 CDT