During the installation of Netweaver 7.3 on Oracle 19, we faced a scenario where the SWPM stopped while installing the primary application server at the stage where it tends to restart the SAP instance. Further investigation led to the log which suggested that the application host was unable to connect to the database
"R3trans -d" was failing
On checking further it was revealed that the Listener was not running and when an attempt was made to start the listener, it failed
