java.net.BindException: RMI 端口已在使用错误

Question

I have a web application running on Tomcat and after weekly maintenance it has suddenly stopped working. Looking into the logs, I get the following error:

2015-06-22 10:10:03,351 [RMIStartThread] ERROR com.corda.ccutil - Found an  existing RMI
registry on 10.0.5.143 with port: 2021
java.net.BindException: RMI port already in use
    at com.corda.ccutil.te.a(te.java:43)
    at com.corda.cvserver.kb.run(kb.java:50)
    at java.lang.Thread.run(Unknown Source)

As indicated in some of other blogs where people had this problem ( Getting Port already in use: 6969; nested exception on tomcat while start up? ), I looked up what was using port 2021 using netstat -anob command. Here is the output:

Using tasklist to then find the process with PID 2700, i get the output:

If its tomcat using the port 2021, why is there a problem then? I have tried restarting the server, stopping and starting tomcat and the web application. The application seems to work fine locally, but doesn't open up on any other remote location.

Does anyone have any ideas about what might have gone wrong ?

Thanks!

Answer 1

Probably because your tomcat had stopped suddenly without liberating the used port and resources. You can face this situation for example if you're running Tomcat in your IDE like eclipse and then close Eclipse without shutting down the server so the resources used by the server will not be liberated.

Just kill the process that use the ports and then restart your server and it will work fine.