> 1) How big (max) can an Oracle SGA be in a 32bit platform (Windows and
> Linux on ia32)?

This doesn't fully answer your question, but you may want to take
a look at this white paper.

http://otn.oracle.com/tech/linux/pdf/9iR2-on-Linux-Tech-WP-Final.PDF

Do realize that PAE (36bit kernel/physical memory addressing on x86) is this
side of black magic -- it (mostly) works, but there are lots of if's, but's,
and other caveats. I would highly recommend testing and talking with oracle if
you were going to deploy such a system in producton to insure that the SGA
size, hardware, and linux distribution you are choosing is a combination which 
would produce sane results.

-- craig



          .-    ... . -.-. .-. . -    -- . ... ... .- --. .

                            Craig I. Hagan
                           hagan(at)cih.com

   "Never let your sense of morals prevent you from doing what is right."
                - Salvador Hardin from Isaac Asimov's Foundation

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