Install oracle 10g in linux

Oracle Database 10g Release 2 (10.2.0.1) Installation On Red Hat Enterprise Linux 5 (RHEL5)
In this article I'll describe the installation of Oracle Database 10g Release 2 (10.2.0.1) on Red HatEnterprise Linux 5 (RHEL5). The article is based on a server installation similar to this, with a minimum of 2G swap, secure Linux disabled and the following package groups installed:
GNOME DesktopEnvironment
Editors
Graphical Internet
Text-based Internet
Development Libraries
Development Tools
Legacy Software Development
Server Configuration Tools
Administration Tools
Base
LegacySoftware Support
System Tools
X Window System
Alternative installations may require more packages to be loaded, in addition to the ones listed below.
Download Software
Unpack Files
Hosts File
SetKernel Parameters
Setup
Installation
Post Installation
Download Software
Download the following software:
Oracle Database 10g Release 2 (10.2.0.1) Software
Unpack Files
Unzip the files:
unzip10201_database_linux32.zip
You should now have a single directory containing installation files. Depending on the age of the download this may either be named "db/Disk1" or "database".

Hosts FileThe /etc/hosts file must contain a fully qualified name for the server:

Set Kernel Parameters
Add the following lines to the /etc/sysctl.conf file:
#kernel.shmall = 2097152
#kernel.shmmax =2147483648
kernel.shmmni = 4096
# semaphores: semmsl, semmns, semopm, semmni
kernel.sem = 250 32000 100 128
#fs.file-max = 65536
net.ipv4.ip_local_port_range = 1024 65000net.core.rmem_default=262144
net.core.rmem_max=262144
net.core.wmem_default=262144
net.core.wmem_max=262144
Run the following command to change the current kernel parameters:
/sbin/sysctl -p
Add the following lines tothe /etc/security/limits.conf file:
* soft nproc 2047
* hard nproc 16384
* soft nofile 1024
* hard nofile 65536
Add the...