Apache2 NameVirtualHost *:80 has no VirtualHosts Error and Solution

Whenever I try to star my Apache 2 server under UNIX / Linux and get a warning as follows:
[warn] NameVirtualHost *:80 has no VirtualHosts
How do I fix this problem?

The NameVirtualHost directive is a required to configure name-based virtual hosts. You need edit your Apache configuration file httpd.conf or apache2.conf, enter:
# vi httpd.conf
Find line that read as follows:

 
<VirtualHost *>
 

Replace is at follows:

 
NameVirtualHost *:80
<VirtualHost *:80>
 

Save and close the file. Here is the sample config file:

 
# My Virtual Hosts Config File for two Domains
NameVirtualHost *:80
 
<VirtualHost *:80>
    ServerAdmin webmaster@theos.in
    DocumentRoot "/usr/local/docs/theos.in"
    ServerName www.theos.in
    ServerAlias theos.in
    ErrorLog "/var/log/theos.in-error_log"
    CustomLog "/var/log/theos.in-access_log" common
</VirtualHost>
 
<VirtualHost *:80>
    ServerAdmin webmaster@nixcraft.com
    DocumentRoot "/usr/local/docs/nixcraft.com"
    ServerName www.nixcraft.com
    ServerAlias nixcraft.com
    ErrorLog "/var/log/nixcraft.com-error_log"
    CustomLog "/var/log/nixcraft.com-access_log" common
</VirtualHost>
 

Save and close the file. Finally, restart Apache:
# /etc/init.d/apache2 restart
OR
# service httpd restart