Installed Oracle last night (to see what it’s got over MySQL) and found that, along with about 1.5 Gb of other stuff, it installed a perfectly functional copy of Apache/1.3.22 (Win32), with mod_perl, mod_ssl and mod_fastcgi, (along with mod_oprocmgr and mod_plsql, which presumably let you get at Oracle’s internals a little better).
Been there. That 1.5 gigs of ‘other stuff’ takes quite a bit to install.