Oracle 12.1.0.2 installation on RHEL/OL 7

Oracle 12.1.0.2 installation steps on Oracle Linux/RHEL 7

Prerequisites
Physical memory = 1024MB
Swap
Min - 1024 MB
Physical memory- 1024 to 2048 then swap 1.5*physical memory
Physical memory> 2048MB then swap=physical memory

Free Space - 6.4GB
temp area=1gB

User required:
INSTALL_USER
BACKUP_USER

Required groups:
INSTALL_GROUP
DBA_GROUP
OPER_GROUP  
BACKUPDBA_GROUP          
DGDBA_GROUP
KMDBA_GROUP
ASM_GROUP

Kernel parameters:
semmsl=250
semmns=32000
semopm=100
semmni=128
shmmax= 0.5*physical ram
shmmni=4096
shmall=physical ram*0.4
file-max=6815744
ip_local_port_range 9000 to 65535
rmem_default=262144
rmem_max=4194304
wmem_default=262144
wmem_max=1048576
aio-max-nr=1048576

OS Packages:

ocfs2 1.2.9
ocfs2-tools 1.2.7
binutils 2.23.52.0.1
compat-libcap1 1.10
compat-libstdc++-33 3.2.3    
libgcc 4.8.2  
libstdc++ 4.8.2
libstdc++-devel 4.8.2
sysstat 10.1.5
gcc 4.8.2
gcc-c++ 4.8.2
make 3.82
glibc 2.17
glibc-devel 2.17      
libaio 0.3.109
libaio-devel 0.3.109

Mount Parameters
nfs  options rw,bg,hard,nointr,rsize=32768,wsize=32768,tcp,noac,vers=3,timeo=600/>

You can ignore if you don't want to configure OUI for MOS access