Re: How to estimate Oracle rdbms volumes from vsam legacy system

On Wed, 04 Mar 1998 22:03:27 -0600, vfoster2_at_aol.com wrote: Hi,

take a look into either:

'DBA Handbook' written by Kevin Loney

or

'Tuning Oracle' written by Corey, Abbey, Dechichio

both published by Oracle Press/Osborne.

They both contain algorithms and examples how to estimate the right sizes of your db-objects.

>Help!!
>
>I have converted a legacy mainframe system (4 gig) to an Oracle rdbms
>database. The estimated factor of conversion was the mainframe data volume
>times 3. The actual was 6 (25 gig).
>
>Are there any good methodologies or metrics to measure this more accurately?
>I will begin converting another legacy system soon. This one dwarfts the
>first in mainframe data volumes by 5. How can I estimate the Oracle data
>volumes? (20 * 6=120 gig!!) How can I estimate CPU, memory, etc that will
>get through budget approval but also be realistic??
>
>Our current platform is HP_UX 10.20, Oracle 7.3.4. We will stay with Oracle
>but not necessarily HP.
>
>Any input would be appreciated!!!
>
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--

Regards

Matthias Gresz    :-)

GreMa_at_T-online.de