Please forgive a question from someone who's completely out of her element...

I'm an application developer with a very small amount of DBA experience with Oracle, from some years ago. Now I work for a firm that wants to purchase Oracle, and a Sun server to run it on. Being the only person here who has the slightest clue about Oracle, I have the joy of doing the research, but I'm just wondering if any of you have tips you could share as to what to look out for when shopping for a server. We have a small budget, so I really need to get this right the first time.

Here are the specs on one of the systems we're considering:
Sun 220R
1 450MHz CPU
1GB RAM
2 18GB HDs
Sun D1000 Array w/ 2 additional 18GB HDs (for mirroring)
Solaris 8

Does anyone have any experience with this? Am I on the right track?

Thanks for any advice.

It all depends a bit an the amount of users.
Oracle is a memory eater!

You could try another database server who handles its resources correctly...
No offence. I used to work with Oracle a lot, but now I 'm glad to work for Informix/db2...