tomcat configuring with eclipse

Question

whats the cause of this error while running tomcat 6.0 on eclipse ide helious:

Several ports (8005, 8080, 8009) required by Tomcat v6.0 Server at localhost are already in use. The server may already be running in another process, or a system process may be using the port. To start this server you will need to stop the other process or change the port number(s).

Answer 1

Just read the error message: Tomcat is already running.

Answer 2

Some application is using the ports configured in Tomcat.

Either check the applications using these ports with netstat and kill them, or configure different ports for Tomcat.

Check if there's any Java Application Server running, they generally use these ports.

Sometimes when you run Tomcat from within Eclipse, you stop Tomcat from the Servers view, and it keeps running on the background. I've found that restarting Eclipse makes it stop for good.

Answer 3

Or:

• you have tomcat running in your eclipse workspace (solution: stop the server in eclipse or the eclipse process from your task manager)
• your tomcat is running in the background as a service (solution: kill the tomcat process from your task manager and disable the windows service)
• the ports tomcat use are used by other programs running in the background (solution: kill the processes using these ports from your task manager)