The document provides step-by-step instructions to install Oracle Database 12c. It details downloading the software, checking system requirements, installing prerequisite packages and configuring OS parameters like memory, ports and users. The instructions then cover running the installer, configuring the listener using NetCA and creating a database instance using DBCA.

1. Step by Step to install database 12c
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1. Download the Oracle Database 12.1 Software from OTN
2. Make sure Oracle Database Software and OS are certified using
https://support.oracle.com
3. Make sure of the following
Hardware
you need to configure Swap Memory And make sure you RAM is enough to avoid
Out Of memory during the installation.
Software
as i mention before check certified OS with database, in my case i will use Redhat 6
update 4.
Install Packages:
binutils-2.20.51.0.2-5.11.el6 (x86_64)
glibc-2.12-1.7.el6 (x86_64)
libgcc-4.4.4-13.el6 (x86_64)
libstdc++-4.4.4-13.el6 (x86_64)
libaio-0.3.107-10.el6 (x86_64)
libXext-1.1 (x86_64)
libXtst-1.0.99.2 (x86_64)
libX11-1.3 (x86_64)
libXau-1.0.5 (x86_64)
libxcb-1.5 (x86_64)
libXi-1.3 (x86_64)
make-3.81-19.el6sysstat-9.0.4-11.el6 (x86_64)
compat-libcap1-1.10-1 (x86_64)
compat-libstdc++-33-3.2.3-69.el6 (x86_64)
gcc-4.4.4-13.el6 (x86_64)
gcc-c++-4.4.4-13.el6 (x86_64)
glibc-devel-2.12-1.7.el6 (x86_64)
ksh <== any version of ksh is acceptable
libstdc++-devel-4.4.4-13.el6 (x86_64)
libaio-devel-0.3.107-10.el6 (x86_64)

2. Step by Step to install database 12c
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inside /etc/sysctl.conf
fs.file-max = 6815744
kernel.sem = 250 32000 100 128
kernel.shmmni = 4096
kernel.shmall = 1073741824
kernel.shmmax = 4398046511104
net.core.rmem_default = 262144
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 1048576
fs.aio-max-nr = 1048576
net.ipv4.ip_local_port_range = 9000 65500
Use this command to restart kernel /sbin/sysctl -p
/etc/hosts
Serverip Hostname
/etc/security/limits.conf
oracle soft nofile 1024
oracle hard nofile 65536
oracle soft nproc 2047
oracle hard nproc 16384
oracle soft stack 10240
oracle hard stack 32768
/etc/pam.d/login
session required pam_limits.so

3. Step by Step to install database 12c
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after edit OS parameter you need to create Oracle user :
groupadd -g 101 oinstall
groupadd -g 102 dba
groupadd -g 103 oper
useradd -u 100 -g oinstall -G dba,oper oracle
passwd oracle
copy media to your Server , and do the following :
chown -R oracle:oinstall /u01/database
chmod -R 775 /u0/database
mkdir -p /u01/app/oracle/product/12.1.0/db_1
chown -R oracle:oinstall /u01
chmod -R 775 /u01
Now start installation by ./runInstaller

4. Step by Step to install database 12c
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5. Step by Step to install database 12c
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6. Step by Step to install database 12c
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to Create Database you need to configure listener using netca and after finished
successfully use dbca like below :

7. Step by Step to install database 12c
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8. Step by Step to install database 12c
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9. Step by Step to install database 12c
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Thank you
Osama mustafa