I am just using the VM image available from Pega Academy (v7.1) for normal Pega 7 CSA /CSSA /CLSA courses. Kindly suggest if i need to do any change in connection settings in DBvisualiser as shown above.
I don't know DBVis but, from what I am just now reading, it seems trying to connect to a PostgreSQL db with DBVisualizer is much more effort than it needs.
I have no idea if the DB2 JDBC driver you have specififed is workable or not. You will need to confirm you have the appropriate JDBC driver for PostgreSQL installed and configured.
Also, it seems to me that the connection settings you have specified are not right. From what I am reading, it seems the Database Server is supposed to be the IP address of the host where the db is installed. dbvis.com has articles on their website that show you how to set up and configure the connection.
The credentials you need are:
db to connect to is: postgres
the credentials are as originally noted
Make sure PostgreSQL will accept the connection. Login into to the vm as root/password and check the following PostgreSQL config files: