Go to http://otn.oracle.com/software/products/database/oracle10g/index.html, and follow the prompts. You'll need to create an account to get the files. Eventually, you will be able to download the following file.
$ md5sum ship.db.cpio.gz
306399691 611574473 ship.db.cpio.gz
Once it's finished downloading, log in as root, decompress and extract the file to end up with a directory called Disk1.
# xhost +
# su
# cd /tmp
gunzip ship.db.cpio.gz
cpio -idmv < ship.db.cpio
double check with the which shell you are using.
echo $SHELL