pre req's for 11g oracle database install

For linux

yum install xorg-x11-apps

yum install xorg-x11-apps.x86_64
xhost +


yum install wget
For linux 7

Oracle Linux 7
cd /etc/yum.repos.d
wget http://yum.oracle.com/public-yum-ol7.repo

yum install oracle-rdbms-server-11gR2-preinstall


after install try to install below rpm's

If fails saying gpgcheck failed

add below line and rerun the commands

yum install --nogpgcheck gcc -y





yum install binutils -y
yum install compat-libstdc++-33 -y
yum install compat-libstdc++-33.i686 -y
yum install gcc -y
yum install gcc-c++ -y
yum install glibc -y
yum install glibc.i686 -y
yum install glibc-devel -y
yum install glibc-devel.i686 -y
yum install ksh -y
yum install libgcc -y
yum install libgcc.i686 -y
yum install libstdc++ -y
yum install libstdc++.i686 -y
yum install libstdc++-devel -y
yum install libstdc++-devel.i686 -y
yum install libaio -y
yum install libaio.i686 -y
yum install libaio-devel -y
yum install libaio-devel.i686 -y
yum install libXext -y
yum install libXext.i686 -y
yum install libXtst -y
yum install libXtst.i686 -y
yum install libX11 -y
yum install libX11.i686 -y
yum install libXau -y
yum install libXau.i686 -y
yum install libxcb -y
yum install libxcb.i686 -y
yum install libXi -y
yum install libXi.i686 -y
yum install make -y
yum install sysstat -y
yum install unixODBC -y
yum install unixODBC-devel -y
yum install zlib-devel -y
yum install elfutils-libelf-devel -y

yum install ksh -y


Once everything is installed.. proceed with installation


while installing oracle database

During the link phase you will encounter an error invoking the "ins_emagent.mk" file. To fix this, edit the "$ORACLE_HOME/sysman/lib/ins_emagent.mk", doing a search and replace for the line shown below.

FROM:
$(MK_EMAGENT_NMECTL)
TO  :
$(MK_EMAGENT_NMECTL) -lnnz11


****************************************************************

For Solaris

pkg install pkg:/x11/diagnostic/x11-info-clients
pkg install oracle-rdbms-server-12-1-preinstall


ndd -set /dev/udp udp_smallest_anon_port 9000
ndd -set /dev/udp udp_largest_anon_port 65500
ndd -set /dev/tcp tcp_smallest_anon_port 9000
ndd -set /dev/tcp tcp_largest_anon_port 65500