Hi Kim,

Here are things for you to consider...

* Your a500-140 is NOT running at 140mhz as advertised by HP. Due
  to cpu throttling that may or not be as good as could be you are
  actually looking at closer to 72mhz for that a-class. You can check
  this web page for some interesting numbers:
  http://qwebs.qss.com/cobdata.html 

* Throttled 'a' class boxes also exhibit interesting i/o timing
  issues as demonstrated by some very astute folks who would know
  given their intimate knowledge of everything mpe. Here again
  you might not have as big a box as you think you have.

* I haven't managed a production oracle system, but from what I
  have read you probably want more memory than 4gb for that system
  if it is going to be an app and database server. I would start
  at 8gb and consider even more depending on the number of connects.

* Your subject line says 1-way, but your message says 2-way.
  Make sure you are getting a 2-way. I would never recommend running
  a rdbms server with less than a 2-way. And you might even need a 4
  way depending on the number of connects.

* Make sure you connect that new server to your network with
  gigabit lan.

* You didn't mention disk subsystems which have a big impact on
  db performance and no mention of the number of database connects
  which also has an impact.

* I find that moving from TI to relational is about a 10-12x cpu hit
  for the parts of the app that are managing the db. Since your app
  also spends time doing other things you don't necessarily have to
  have 10-12x the cpu, but it might be a reasonable starting point.

* You are wise to get a 3440 system so you can put two more cpus into
  it if needed. Also, the more cpus the more memory... (a vicious
cycle).
  Notice that I assume you are starting with 2x1ghz in that 3440. Once
  again I will point out: minimum config is a 2-way :-)

* The mpe tcp/ip stack is performance challenged so you will see
  networking improvements when migrating to hp-ux.

* TI/odbclink isn't a performance screamer so you might be in for some
  pleasant surprises in the positive direction :-)

* As always, ymmv - HP does have a migration center where you can get
  access to systems. Might be of interest to you...

duane

> 
> Hi all,
> 
> First time posting in here.  Longtime HP3000 person.  Quick 
> question. We currently have an HP3000 A-500 140 2 way running 
> a client server 
> application using an Image DB and ODBCLink as the middleware.  
> 
> Would a RP3440 2 X 1 Ghz PA8900 CPU -4 GB memory, compare in speed 
> preformance, etc.  We are going to convert the image DB to Oracle.
> 
> Just trying to get an idea. Figured some people must have 
> migrated some 
> things.  Any help would be apprieciated.  You can email me 
> directly if you 
> have any info also.
> 
> Thanks
> Kim Moskalewski

* To join/leave the list, search archives, change list settings, *
* etc., please visit http://raven.utc.edu/archives/hp3000-l.html *