| Hello !
You can somehow rape the syssizer tool to give you a wild guess on if
that is possible. First try to find out how many transavtions such a
batchinput will trigger (you can look at the input map within SAP,
but for this you need probably more knowledge then you have).
So you can guesstimate that 1 booking will be something like 2-3
(maybe 4) transactions. This then means in your case
about 1.8Mill transactions. Divided by the acceptable time this would
mean something like 300.000 transactions per hour.
You then have to know in how many maps you can split the stuff
(worst case only 1) and add this numer for the users. Then
you change the transaction rate until the number in the right botton
corner matches the 300.000
If you then ask for a machine you will find out that this is even
beyond what an Alpha (and every competition) can do (the maximum is
about something like 200.000 transactions).
Be also aware that if for example the sizing tool suggests much more
CPUs then you have batchinput maps this will not work, because they are
not so parallelizable.
Forget also the memory calculation of the sizing tool in this case.
So as outlined above you can use the tool only for getting a raw idea
what size the machine will be in this case.
I would suggest to extrapolate from one of my customers in Austria. He
has a 8200 with 4x440MHz CPUs and 1.5 GB Mmeory arunning 2.2 of SAP
and he gets close to 40.000 standard FI bookings (not transactions)
per hour. This customer already does creative things like running the
Oracle logfiles on a Solid state (RAM) disk during this periood and you
have also to turn off some SAP features (like deleting the Updatelog)
during this time.
And be aware the 4th CPU is almost idle, even when he runs about half a
dozend maps at the same time.
So he would be able to do 600.000 in about 15h which is about twice the
time you are looking for.
So in your case the customer will have to look into the
new 'fast' batchinput procedure SAP offers with 3.0
which can give a 200-300% performance increase (at least SAP says so)
I hope this gives you some ideas on how to proceede, generally
said it probably will end up in a try and see approach.
Regards
Thomas Wintersperger, Austria
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