You need to make a connection via jdbc on a glassfish application server, your database is postgresql
First thing to do is download your jdbc driver. For postgres you can find this on the postgres website.
Now you need to copy it in the lib directory of your domain. If you are working with the default domain, then this must be domain1.
e.g. on windows
e.g. on linux
After copying the driver you can setup and configure the data source. For more information look at the article "Howto configure a connection pool for a postgres database in glassfish".
About the Author
Wim Peeters is electronics engineer with an additional master in IT and over 30 years of experience including time spent in support, development, consulting, training and database administration. Wim has worked with SQL Server since version 6.5. He has developed in C/C++, Java and C# on Windows and Linux in different European countries and different European languages. He writes knowledge base articles to solve IT problems and publishes them on the Lubby Knowledge Platform where he is one of the most important contributors and the main developer.