Stop your server before you start to clean.
Stopping a server
You can stop the server from the Servers view.
To stop the server:
If for some reason the server fails to stop, you can terminate the process as follows:
a. Switch to the Debug perspective.
b. In the Process view, select the server process that you want to stop.
c. Click the Terminate icon in the toolbar.
Note: When terminating a server, the server process will end and the server will not go through the normal routine of stopping, for example calling the destroy() method on a servlet.
Source: Eclipse Help
~ Answered on 2013-10-21 08:46:00