LISTENER:AWSBXZNVAL004W.JNJ.COM        : STATUS: The listener is down: TNS-12541: TNS:no listener .   
system is down due to maintenance. now system is up and running fine. since we are closing the ticket. 
[vsiramse@AWSBXZNVAL004W ~]$ ps -ef|grep tns 
root          41       2  0 10:41 ?        00:00:00 [netns] 
oracle    232073       1  0 13:01 ?        00:00:00 /oracle/P18/19/bin/tnslsnr LISTENER_P18 -inherit 
vsiramse 3109657 3109253  0 16:49 pts/4    00:00:00 grep --color=auto tns