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I have RAD(Rational Application Developer) version 9.00. I have created a "Dynamic web project" and I want test it using "Web preview server" which is already listed under available run times.

I tried run my application using Run As -> run on server and selected the "web preview server" from the existing server list. When I clicked finish after about 30 seconds below mentioned message was shown.

Starting web preview server" has encountered a problem.
 Server Web Preview Server was unable to start within 30 seconds. If the 
 server requires more time, try increasing the timeout in the server editor.

Below mentioned log messages were displayed in console:

Launching defaultServer0 (WebSphere Application Server 8.5.5.0/wlp-1.0.3.20130510-0831) on Java HotSpot(TM) Client VM, version 1.6.0_02-b06 (en_US)
[AUDIT   ] CWWKE0001I: The server defaultServer0 has been launched.
[ERROR   ] CWWKF0001E: A feature definition could not be found for security-1.0
[ERROR   ] CWWKO0221E: TCP Channel defaultHttpEndpoint initialization did not succeed.  The socket bind did not succeed for host * and port 8080.  The port might already be in use.
[AUDIT   ] CWWKZ0058I: Monitoring dropins for applications.

any idea what I am doing wrong here? Regards

dan1st
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Riaz Ahmed Rajput
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  • It seems that the port 8080 is already in use. Either make sure that it is not (by stopping the application currently listening on port 8080) or choose another port. – dan1st Apr 21 '21 at 06:08
  • How do I check which application is using port 8080? – Riaz Ahmed Rajput Apr 21 '21 at 06:16
  • [`netstat -ab` on windows (as administrator)](https://superuser.com/q/707249/1079262) and [`netstat -lp` on linux](https://www.tecmint.com/find-out-which-process-listening-on-a-particular-port/) – dan1st Apr 21 '21 at 06:21
  • Port 8080 is in use the process "[tnslsnr.exe]" is using it, how can I change port for web preview server? – Riaz Ahmed Rajput Apr 21 '21 at 06:32
  • [WTP HTTP Preview server - How can I re-configure default server port?](https://stackoverflow.com/q/741871/10871900) – dan1st Apr 21 '21 at 06:35
  • I added attribute port="8181" for web preview server and restarted the rad IDE but error is still the same... – Riaz Ahmed Rajput Apr 21 '21 at 07:13

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