RE: RAC - mix Intel and AMD in same cluster ?
Date: Thu, 23 Jul 2009 15:01:16 -0700
I've never run RAC so not speaking from any experience and it's been a long time since I read anything on how RAC manages the multiple caches, but I'd think the locking delays Mark (or Oracle Support) mentioned would only affect DML, so the faster nodes would still be able to process SELECT queries faster, but might just be limited to the speed of the slower nodes for UPDATE/SELECT/DELETEs. Most of my systems are probably 90% SELECTs so I wouldn't be too concerned about the slower nodes, however in a DML-intensive environment it might be more of a problem.
From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Bobak, Mark
The reasoning behind why faster nodes in a cluster are gated to the performance of the slowest node, is that all nodes potentially participate in any SQL execution . . .
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http://www.freelists.org/webpage/oracle-l Received on Thu Jul 23 2009 - 17:01:16 CDT