Powerhouse & database choices.

[Chris Sharman]

>I just wanted to comment on the Alpha/VMS - Oracle Rdb configuration.
>I believe that indeed the performance would be OK for the 4GB database.
>
>However this configuration did not work for us.
>We were running 300Gb Oracle Rdb on Alpha/VMS in cluster environment of 4
>apx4100 machines
>@600Mhz and 8Mb memory against Powerhouse 710g1. We had over 300 users. 

You surely don't mean 8Mb memory ? That's barely enough to boot !

>The performance was very poor with lots of bottlenecks in the area of
>OpenVMS Lock Manager, 
>even though we employed solid state disk and memory channel.

This area's been discussed at length in comp.os.vms & elsewhere: there are
(as I've mentioned recently) extensive performance enhancements in this area
in VMS 7.3 (shipping). VMS has traditionally been written for safety rather
than speed: try unplugging either system (Rdb+VMS or Oracle+Unix) on a busy
afternoon, and seeing which is back up fastest with least loss !
That said, a well tuned Rdb database is reputedly pretty fast, too.

Chris
_______________________________________________________________________
Chris.Sharman@CCAgroup.co.uk		http://www.ccagroup.co.uk/
CCA Stationery Ltd, Eastway, Fulwood, Preston, Lancashire, PR2 9WS.


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