When I am trying to connect to the database as sqlplus / as sysdba.It is throwing following exception.
Please any one give suggestions.
C:\>sqlplus "/as sysdba"
SQL*Plus: Release 18.104.22.168.0 - Production on Wed Jan 2 10:38:52 2013
Copyright (c) 1982, 2008, Oracle. All rights reserved.
ORA-12560: TNS:protocol adapter error
Thanks in advance.