ORA-12541 and TNS-12541 ORA-12541 is the same as TNS-12541, they all indicate that the listener is not running according to your specified destination. Let’s see… Read More »How to Resolve ORA-12541: TNS:no listener
TNS-12546: TNS:permission denied I got TNS-12546 when I tried to start the listener as oracle. oracle@solaris11vm:~$ lsnrctl startLSNRCTL for Solaris: Version 11.2.0.4.0 - Production on… Read More »How to Resolve TNS-12546 Error Message
sqlplus, tnsping or lsnrctl Hangs I can't cover all situations in this post, but I have some cases to share with you. Those hanging all… Read More »Why Tnsping Hang
You may found out the listener seems not working:[oracle@primary01 ~]$ lsnrctl statusLSNRCTL for Linux: Version 12.1.0.2.0 - Production on 05-JUN-2016 19:40:08Copyright (c) 1991, 2014, Oracle.… Read More »When Listener Seems Not Working in RAC
Earlier databases like 9i should set password for listeners, otherwise, they could be accidentally stopped by someone unknown. Here in this post, I will introduce… Read More »How to Set Password for Listener