Configuring UIs After Deployment > Configure and Start Tomcat > Update Tomcat Port Numbers
  
Update Tomcat Port Numbers
Use these steps to update the server.xml configuration file for Tomcat with the new port.
1 In a text editor, open TomcatInstallDir/conf/server.xml.
2 Look for the following parameter block and update the port reference:
<!-- Define a non-SSL Coyote HTTP/1.1 Connector on port 8080 -->
<Connector port="8900"
maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
enableLookups="false" redirectPort="8443" acceptCount="100"
debug="0" connectionTimeout="20000"
compression="on"
disableUploadTimeout="true" />
<!-- Note : To disable connection timeouts, set connectionTimeout value to 0 -->
3 If you need to change the server port from the default 8005 value, locate the following parameter and update the port reference:
<Server port="8905" shutdown="SHUTDOWN" debug="0">
4 Save the file.