How to estimate Oracle rdbms volumes from vsam legacy system

From: <vfoster2_at_aol.com>
Date: 1998/03/04
Message-ID: <6dl855$ocj$1@nnrp1.dejanews.com>#1/1

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!!!

-----== Posted via Deja News, The Leader in Internet Discussion ==----- http://www.dejanews.com/ Now offering spam-free web-based newsreading Received on Wed Mar 04 1998 - 00:00:00 CST