Oracle & PHP Installfest guide - Oracle 10gR2 on RHEL4 - OTN Night 2005
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Installing Oracle 10g (10.2.0.1) on RHEL4

*** This guide is for test purposes only - not production ***

Boot from RHEL4 disc1
press enter for graphical install
	** Need at least 512MB RAM / 2.5GB Space **
+ Automaticaly or Manually partition your hard drive with Disk Druid
	/tmp = 512MB ext3 fixed size
	/boot = 128MB ext3 fixed size
	swap = 1024MB fixed size
	/ = fill to maximum allowable size

+ Accept defaults for GRUB boot loader, and configure networking.

+ Most Linux distros and RHEL4 ship with default security preferences locked down.
For testing purposes I typically turn off the firewall and disable SE Linux.

+ Set language preferences and root password

+ Select 'Customize software to be installed'
	- make sure the packages essential for installing Oracle are selected.
		Desktop : X Window System; Gnome or KDE
		Editors : at least one editor - vi etc.
		Graphical Internet : a web browser - firefox
		Development : Development Tools, and Compat Legacy Languages

For post-install configuration login as root
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+ create groups
	/usr/sbin/groupadd oinstall
	/usr/sbin/groupadd dba
	/usr/sbin/groupadd oper

+ create OS user oracle with group permissions and home /opt/oracle
	/usr/sbin/useradd -g oinstall -G dba,oper -d /opt/oracle oracle

+ set user oracle's password
	/usr/bin/passwd oracle

+ Append user oracle's bash profile with PATH and ORACLE:BASE,HOME and SID information
	vi /opt/oracle/.bash_profile

	umask 022
	PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin
	LD_LIBRARY_PATH=/usr/lib:/usr/X11R6/lib

	ORACLE_BASE=/opt/oracle
	ORACLE_HOME=$ORACLE_BASE/product/10gR2
	ORACLE_SID=orcl
	PATH=$ORACLE_HOME/bin:$PATH

	export PATH LD_LIBRARY_PATH ORACLE_BASE ORACLE_HOME ORACLE_SID

+ Create the directory for the software installation and assign ownership to oracle:oinstall
	chown -R oracle:oinstall /opt
	chmod -R 775 /opt

+ Make sure the correct kernel parmeters are appended to sysctl.conf
	vi /etc/sysctl.conf (these can be easily copied from the Quick Installation Guide
                              for Linux x86 doc on the Oracle10g CD)
	kernel.shmall = 2097152
	kernel.shmmax = 2147483648
	kernel.shmmni = 4096
	kernel.sem = 250 32000 100 128
        net.core.rmem_default = 262144
	net.core.rmem_max = 262144
	net.core.wmem_default = 262144
	net.core.wmem_max = 262144
	fs.file-max = 65536
	net.ipv4.ip_local_port_range = 1024 65000

+ set the kernel parameters or reboot
	/sbin/sysctl -p

Login in to xwindows session as user oracle
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+ Mount the Oracle10g CD and run the installer
	mount /media/cdrom
	(cd $HOME && /media/cdrom/runInstaller)
	- follow the installer instructions 
	- use password mgmt to unlock DBuser scott & set password 'tiger'
+ open http://localhost.localdomain:1158/em in a browser or
	As root # vi /etc/oratab  change :N to :Y 
          	# cp /etc/oratab /var/opt/oracle/oratab
+ This enables the oracle user to dbshut, dbstart and lsnrctl start