java.sql.SQLException: Already closed..strange!

Hello guys, I've a strange problem with my jsp application. I use Tomcat 6.0.18. I use connection pool with dbcp and this is context.xml of my application > When I run application it works correctly. Sometimes (I'm not able to understand why) I've got, running application, this error:

LifecycleException: Manager has not yet been started

Hello guys, I need your help to solve my question. I developed a jsp application. I tested it in local with tomcat 5.5 and it works correctly. I bought a web space with the same web server, I copied file of web application on web server, I run application and index page is shown. I do login and a