The first thing I always check when CLI works but web doesn't, is that I have my Content-Type line correct.
You need two newlines after it: 
print "Content-Type: text/html\n\n";

[download]
At least about 60% of the time for me, that fixes my main issue of not seeing anything, or rendering the page as text rather than html.
Definitely check out marto's links, those are nice tutorials.

In reply to Re^3: Connecting to Oracle DB using DBI from CGI script by sierpinski
in thread Connecting to Oracle DB using DBI from CGI script by Anonymous Monk

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