I tried to login using
sqlplus / as sysdba in Oracle 11g, but it is asking for a password. So I tried to login using
sqlplus "/ as sysdba" since I'm using Windows. But it is showing the following error:
sqlplus "/ as sysdba" SQL*Plus: Release 184.108.40.206.0 Production on Mon May 22 12:51:22 2017 Copyright (c) 1982, 2013, Oracle. All rights reserved. ERROR: ORA-12560: TNS:protocol adapter error
I googled this same issue,But nothing could help me out.