Need advice installing Oracle V6

I am installing multiple copies of Oracle V6 on several SPARC2s, each with a single internal 424 MB disk. This is partitioned thusly:

Filesystem            kbytes    used   avail capacity  Mounted on


/dev/sd0a              15487    6068    7871    44%    /

/dev/sd0g             155015  134990    4524    97%    /usr


/dev/sd0h             187463  157875   10842    94%    /home



All of the oracle products are in /home/oracle:
async/          dbs/            mail/           report/
bin/            dict/           menu5/          sqlcalc/
c/              dnt/            mprodins_at_       sqlplus/
cdes/           easysql/        olprodins_at_      sqlreport/
cgen/           forms30/        orakit/         tcp/
cobol/          fortran/        oraterm/        tpo/
crt/            install/        plsql/
datalens/       loader/         rdbms/

As you can see, I don't have much room for a database or anything else. I am also fairly new to Oracle, particularly doing installations. So, the question is, of these products, which are essential for running the database, and which can I blow away until they are needed (and I have more disk space to work with :)? I plan on getting rid of the CASE stuff, but I don't know what the devil datalens, loader, orakit, oraterm sqlcalc, and tpo are. I can guess that I should keep the other stuff, but is there anything I can trim out that isn't really needed?

Followup to me via email, please. Thanks for any help...

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John de la Garrigue - SAIC   ||  Obligatory disclaimer:
jd_at_archimedes.nws.navy.mil   ||   "I have no clear recollection of
                             ||    the events you are referring to."