RE: Oracle on Sun vs Tru64

Jake,

I have heard horror stories from both Sun *and* Tru64 customers (we were Sequent, and moved to Sun), but your CIO is probably right in moving out since support (people, skills, patch and product/application availability) for Tru64 is slowly vanishing. As well maintenance costs are higher for 'exotic' brands, so the move might make sen$e. For sure, the Sun platform base is larger...

The stickler is the time that will be taken for migration, and that depends on 'how much is the business willing to wait' while the database is down, as this *has* to be done via an export/import. Questions you might want to ask (and follow up for alternate solutions) are:

• Would a read-only copy of the database suffice when you migrate (keeps users somewhat happy, but need to make sure that there are NO updates)
• Is it possible to migrate a set of connected pieces at a time? (reduce a big-bang approach to a series of smaller bangs with interfaces via DB links, etc.)
• Is it possible to create an archive copy and purge the older data? (reduce the amount of data to be exported/imported)
• Is it possible to parallelize export/import (use all available CPU/IO capacity) and use piping rather than perform an export-ftp-import cycle?
• Do you have additional (and equivalent) h/w so that you can test approaches and fine tune the whole thing?

These are some of the questions that you might want to start asking of your CIO!!! John Kanagaraj
DB Soft Inc
Phone: 408-970-7002 (W)

Listen to great, commercial-free christian music 24x7x365 at http://www.klove.com

• The opinions and facts contained in this message are entirely mine and do not reflect those of my employer or customers ** -----Original Message----- Sent: Wednesday, October 15, 2003 8:54 AM To: Multiple recipients of list ORACLE-L

Our CIO is pushing a platform change from Tru64 to Sun. We are currently running a VLDB (~1.5 TB) on Tru64. Does anyone have feedback on the following:

1) Experiences with either/both, preferred platform?
2) Experiences with platform changes? (Time required for migration?)
3) Any other thoughts?

Thanks for your feedback. I am just starting to research the issue so I am interested in any input.

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