Re: RAC

Jonathan,
 At the seminars I have attended it was pointed out that the :true RAC" is COMPAQ only. The seminar was hosted by Oracle/Compaq. Compaq RAC allows multiple CPU's to mount and use/share the same datafiles in a true RAC configuration. The drives including the os drive are on a SAN and shared by the CPU's so knowledge is shared. It was pointed out the new Linux RAC can only share a RAW device and not a datafile. I don't know if this is true as I have not tried it yet. The speaker at the seminar said that with other OS's a RAC is like a High Availability (HA) option, one CPU is doing nothing until the first one fails or you only run different applications and datafiles on one CPU and other applications and datafiles on the second CPU. if one fails you have to mount the datafiles and switch applications to the active CPU.   To use a true RAC you have to use Compaq and I think the market share of the OS's are not True64, so there are probably not a lot of users of RAC.
Ron
ROR mª¿ªm

>>> listmail_at_gennick.com 04/17/02 10:18PM >>>
I was talking w/someone today, and we realized that neither of us knows of anyone actually using RAC in production. So now I'm curious. Is anyone?

Jonathan Gennick --- Brighten the corner where you are mailto:jonathan_at_gennick.com
http://Gennick.com * http://MichiganWaterfalls.com * http://ValleySpur.com

--
Please see the official ORACLE-L FAQ: http://www.orafaq.com 
--
Author: Jonathan Gennick
  INET: listmail_at_gennick.com 

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
San Diego, California        -- Public Internet access / Mailing Lists
--------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from).  You may
also send the HELP command for other information (like subscribing).
-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Ron Rogers
  INET: RROGERS_at_galottery.org

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
San Diego, California        -- Public Internet access / Mailing Lists
--------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from).  You may
also send the HELP command for other information (like subscribing).