Tell us your listener.ora and tnsnamed.ora.

andrei@localhost:~$ lsnrctl status
lsnrctl: команда не найдена
andrei@localhost:~$ sqlplus64
sqlplus64: команда не найдена

andrei@localhost:~$ sqlplus64

SQL*Plus: Release 11.2.0.4.0 Production on Sun Jul 31 17:44:33 2016

Copyright (c) 1982, 2013, Oracle.  All rights reserved.

Enter user-name: hr
Enter password: 
ERROR:
ORA-12162: TNS:net service name is incorrectly specified

andrei@kidstore:~$ lsnrctl status
lsnrctl: команда не найдена

andrei@localhost:~$ sudo telnet localhost 1521
[sudo] password for andrei: 
Trying 127.0.0.1...
telnet: Unable to connect to remote host: Connection refused

andrei@localhost:~$ sudo netstat -p | grep 1521
unix  2      [ ]         DGRAM                    1521     1259/dhclient       

andrei@localhost:~$ sudo ps aux | grep pid_from_netstat
andrei   21455  0.0  0.0  17184   948 pts/6    S+   18:05   0:00 grep --color=auto pid_from_netstat

andrei@localhost:~$ sudo find / -name "sqlplus*"
/usr/bin/sqlplus64
/usr/bin/sqlplus
/usr/lib/oracle/11.2/client64/bin/sqlplus