Create Oracle Net Listener that is a network service on Oracle.Login with the “oracle” user and input a command “netca”  or [oracle@ermantestdb ~] $cd $ORACLE_HOME/network/bin/ [oracle@ermantestdb ~] $ ./netca Check a box “Listener Configuration” and go next. Go next. Set Listner’s name. This example goes next with keeping default TCP (Transmission Control Protocol ) Set a […]