Oracle-L: Question about oracle whitepaper casestudy

From: chao_ping <chao_ping_at_vip.163.com>
Date: Thu, 31 Oct 2002 22:58:32 -0800
Message-ID: <F001.004F9721.20021031225832@fatcity.com>

hi, list friends:

	I read the parper on oracle otn network:
	http://otn.oracle.com/products/oracle9i/pdf/email_server_rac_deployment.pdf
 	And i have some question on that paper:

1.Since all node have 32GB (Page 5)RAM,and it is RAC, It does not need other memory for failover from other nodes, why does it configure onlye 9GB(Page 18) data buffer?

2.From statspack report(page 19), the original server have 186 Transactions per second, and later the three nodes have also totol number of 171 Transactions per second.So, the pressure on the servers are less than before.So, physical io should be less than before,and with the RAC cache Fusion, there should be even less physical IO .But from statspack report, in fact,there is more physical io than before? And oracle did not give out the statistics about the Unix CPU load, response time change etc.

3.Page 9, since it has 3 nodes, how can they use the cluster_interconnect parameter? If using two NIC card both node for internode communication, how did they implement it?

Regards
zhu chao
Eachnet DBA
86-21-32174588-667
chao_ping_at_vip.163.com
www.happyit.net

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Author: chao_ping
INET: chao_ping_at_vip.163.com

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