# install Oracle XE 11g on CentOS

# assumes the installation file has already been copied to /u01/download

# create Oracle user and groups
groupadd oinstall
groupadd dba
useradd -g oinstall -G dba,oinstall oracle
chown -R oracle:oinstall /u01

# change the password
passwd oracle

# unzip the installation files
cd /u01/download
unzip oracle-xe-11.2.0-1.0.x86_64.rpm.zip
cd /u01/download/Disk1

# run installation
rpm -ivh oracle-xe-11.2.0-1.0.x86_64.rpm

# run the configuration script
# accept the defaults (unless you know what you are doing!)
/etc/init.d/oracle-xe configure