Running Apps 11i on Linux with 200 concurrent users

Hi,
Is there anybody out there running a large apps 11i installation (with the
database and middle tier) on Linux ?
We are currently running 11.5.9 Apps with a 9.2 database on Sun kit but I'd
like to investigate Linux/Intel as we are planning to replace our hardware.
We have about 200 concurrent users, with a total of 1800 registered users, using
Financials, i-Procurement and HR.
Thanks
Tony Vallis

Having worked extensively on Linux, its true that is is limitied in 32 bit mode to addressing a few GB of memory for each application (It is at least better than windows with its 2/3GB limit), although you can play around with it and memory windows to get more out of it for the database tier.
We have used 1 * 6650 with 8GB RAM running AS 2.1 DB Tier
and 2 * 2650 with 8 GB RAM ruuning AS 2.1 Apps Tier with conc mgrs too.
This was with 11.5.10 and it comfortabley supported 200 users. The servers were 2.8GHz Dual core Xeons. Redhat 3 or 4 would have been better becuase of a file cache issue on the database tier.
Also rememeber to consider Oracle licensing, A faster CPU might cost alot more but when oracle licenses are based on core/cpus then you may save alot more by having the highest power cpus u can (MHz rating not ness cores). Sun T2000 servers are quite nifty too if you want to stay with traditional unix kit but not want the price tag.
When workign at internally in Oracle We quoted one client a 3 * 4 CPU 6650 with 8GB in RAC config with 12 * 2 CPU 2650 with 4GB to support 5000 concurrent users. I wasnt convinced this would work at the time but the client had massively over estimated the number of users they would actually have so all was fine.
If I was doing this now I would go for a single 64bit DB tier with 4 CPUs and lots of memory, I would have lots of small8gb mid tiers 2850's, with a hard ware load balancer in front and a dedicated GB backend network. I would ony go for RAC if I needed the resiliance or had a large number of users e.g. 1000+
All in my opinion and I am in no way suggesting this as a solution for any other customers. Always perform a hardware siazing exercise in conjunction with your hardware vendor (remembering they always want you to buy more hadrware than u need).

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null

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<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by JAMES WHITTLE ([email protected]):
Hello -
cpu/ram of unix database server for 11i financials implementation...
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Is the 11i have an app server where concurrent managers run or are they on db server? How about 11?<HR></BLOCKQUOTE>
null

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Running Apps 11i on Linux with 200 concurrent users

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