The Derby database shipped with Applicare starts and listens on localhost and the standard Derby port 1527. If this IP/port needs to be changed, you can start Derby on a different IP and port number by editing startNetworkServer.bat (Windows) or startNetworkServer.sh (Unix/Linux) in the <Applicare Dir>/javadb/bin directory. Add -p <new port number> after the -h <new IP> text
For example:
org.apache.derby.drda.NetworkServerControl start -h 192.168.0.70 -p 1728
You will have to edit the Applicare.props file in the Applicare directory to reflect the new port number. Look for the line starting with applicare.dburl= and change IP and port 1527 to new port number on that line. Restart the Applicare server and the servers running Applicare agents for the changes to take effect.