Please take a look at http://www.appsdba.com/papers/oracle_utilities.pdf
I proposed a plan to make a good working Oracle home(with all the patches installed) and making an image and using the same image for all other nodes with the same platform and hardware. The process is tar, untar them and to run clone.pl for the home on target node. This saves us lot of time(for installing 10g R2 using OUI). But my teammates are not okay with that stating that it may get us some problems. We have already cloned it for multiple boxes and ZERO issues. But still people are afraid to put that home in prod.
Thanks -- "Happy people plan actions, they don't plan results." -- http://www.freelists.org/webpage/oracle-l
-- Jared Still Certifiable Oracle DBA and Part Time Perl Evangelist