Setting port numbers

By default, Derby using the Network Server listens on TCP/IP port number 1527. If you want to use a different port number, you can specify it on the command line when starting the Network Server. For example:

java org.apache.derby.drda.NetworkServerControl start -p 1088

However, it is better to specify the port numbers by using any of the following methods

Change the startNetworkServer.bat or startNetworkServer.ksh scripts
Use the derby.drda.portNumber property in derby.properties

See Starting the Network Server for more information.