Setting port numbers By default, 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. Network Serversetting port numbers for Port numbersNetwork Server and

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 script Use the derby.drda.portNumber property in derby.properties See for more information.