TNS-12560 TNS-00583

-bash-3.2$ lsnrctl start

LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 30-NOV-2014 14:01:24

Copyright (c) 1991, 2005, Oracle.  All rights reserved.

Starting /u01/app/oracle/product/10.2.0/db_1/bin/tnslsnr: please wait...

TNSLSNR for Linux: Version 10.2.0.1.0 - Production
System parameter file is /u01/app/oracle/product/10.2.0/db_1/network/admin/listener.ora
Log messages written to /u01/app/oracle/product/10.2.0/db_1/network/log/listener.log
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost.localdomain)(PORT=1521)))
TNS-12560: TNS:protocol adapter error
 TNS-00583: Valid node checking: unable to parse configuration parameters


Listener failed to start. See the error message(s) above...


Cause:-
Not Proper entry in sqlnet.ora file
sqlnet.authentication_services=



Solution:-
Not Proper entry in sqlnet.ora file
sqlnet.authentication_services=(NTS)

Some TNS-errors