Hello Everyone,
Virtual Box Version :- 5.1.10
OS Version :- Oracle Linux 6.8
Windows :- 8.1
Since last a few days I am facing below error while installing 12c on Oracle Linux 6.8 in virtual box.

I have performed below sequence of steps.
-
yum install oracle-rdbms-server-12cR1-preinstall -y
-
vi /etc/security/limits.d/90-nproc.conf
# Changed this
* soft nproc 1024
# To this
* - nproc 16384
-
vi /etc/selinux/config
Change SELINUX=permissive
-
setenforce Permissive
-
service iptables stop
-
chkconfig iptables off
-
mkdir -p /u01/app/oracle/product/12.1.0.2/db_1
-
chown -R oracle:oinstall /u01
-
chmod -R 775 /u01
After performing all this steps I rebooted and this error came during boot time.
Thanks in Advance.