This installation of Oracle 11.2.0.1 is for HP-UX 11.31 ia64.
1. Create oracle User Account
Login as root and create the user oracle which belongs to oinstall and dba groups.
su -
# /usr/sbin/groupadd dba
# /usr/sbin/groupadd oinstall
# /usr/sbin/useradd -g oinstall -G dba -m -s /usr/local/bin/bash -p /home/oracle oracle
# passwd oracle
# chown -R oracle:oinstall /home/oracle