The port of the demo databases are by default 62210 and 62211.
It is possible to change it in :
<stambiaRuntime>\external\hsqldb\bin\baseHotel.bat
and
<stambiaRuntime>\external\hsqldb\bin\baseDatamart.bat
or the .sh equivalent for Linux.
Windows :

Linux :

Note :
- You'll have to indicate this files in the
protection.rulesfile of the runtime to avoid them being rewritten with defaults at each Designer restart. See this article for further information. - If you want to be able to stop the databases with the
Stop demo Databasesbutton in the Designer (or thestopdemo.batscript), you'll have to modify the port in<stambiaRuntime>\external\hsqldb\bin\demoRcFile.txttoo


