Does it is possible to run Apache server and Tomacat server in one Linux server?

Yes it is possible, and very common. You can also run multiple instances of apache and tomcat on the same host is so inclined.

I am very new for Tomcat. and now my server is running Apache. So how i can install Tomcat in my server and how I can run it properly with out any other interruption to my Apache server.

How to Install Tomcat depends primarily on what OS you're using. On RPM and DEB based linux it's rather easy and straight forward, others like Slackware/Gentoo will be a bit more involved.

Most modern distros usually include Tomcat with the distribution, you may want to have a look there first.

What flavor/version of linux are you running ?
What version of Tomcat do you need to install ?
Remember, Tomcat is a java servlet and thus requires Java. Older versions of Tomcat require the full JDK, newer versions can get by with just the JRE.

Feel free to review the documentation on the Tomcat website. http://tomcat.apache.org/

The documentation here is rather good, make sure you read the FAQ section too.

Thanks dbogdan ! My OS is CentoS 5.2. I have already installed Apache and PHP in my Server and I am running it as live web-server. Now I like to run tomcat sever as a webserver. I mean I want to run 2 webservers (Apache and Tomcat) simultaneously. How it will be possible?

Centos is based on Redhat so you may want to look at installing tomcat from an RPM (should be easier) than installing from source.

Here's a link that goes into the details
http://www.howtoforge.com/forums/sho...d.php?p=113304

I don't have access to any redhat/centos builds so I can't give you step by step instructions unfortunately but a quick google search shows quite a few hits...

http://www.google.com/search?q=hot+t...rch&hl=en&sa=2

And this one that may present the most help...

http://www.centos.org/modules/newbb/...forumpost55054