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Home -> Community -> Mailing Lists -> Oracle-L -> RE: Recipe for application design to run on RAC
If two or more RAC instances will be trying to cache the same data
blocks, then this causes the performance problems that you'll see show
up as lots of time spent on the event called "global cache cr request".
If you can partition your application so that RAC nodes don't have to
share blocks very often through the cache fusion mechanism, then your
system will scale a lot better.
Cary Millsap
Hotsos Enterprises, Ltd.
http://www.hotsos.com
Upcoming events:
- Hotsos Clinic, Dec 9-11 Honolulu
-----Original Message-----
Sent: Tuesday, November 26, 2002 3:34 PM
To: Multiple recipients of list ORACLE-L
Dear List,
Number of times I've seen that one of prerequsites for
switching from single node DB to OPS/RAC is to have an
application specifically designed / architectured to
run on RAC.
Can somebody elaborate? Is it something "visible" on
ERD? That is by looking at the model can RAC guru tell
that it wouldn't work well on RAC?
Or put it another way can one conclude based on the
ERD that app was modeled to run on RAC?
What's the recepie for app design for RAC?
TIA
-- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Boris Dali INET: boris_dali_at_yahoo.ca Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- 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: Cary Millsap INET: cary.millsap_at_hotsos.com Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- 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).Received on Tue Nov 26 2002 - 17:59:18 CST
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