hi am not able to connect with sysdba i have done the following
C:\>tnsping mcor
TNS Ping Utility for 64-bit Windows: Version 12.1.0.2.0 - Production on 28-JAN-2017 08:54:36
Copyright (c) 1997, 2014, Oracle. All rights reserved.
Message 3511 not found; No message file for product=NETWORK, facility=TNSTNS-03505: Message 3505 not found; No message file for product=NETWORK, facility=TNS
C:\>set ORACLE_HOME=D:\App\OracleUser\product\12.1.0\dbhome_1
C:\>tnsping dbname
TNS Ping Utility for 64-bit Windows: Version 12.1.0.2.0 - Production on 28-JAN-2017 08:55:39
Copyright (c) 1997, 2014, Oracle. All rights reserved.
Used parameter files:
D:\App\OracleUser\product\12.1.0\dbhome_1\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = hostname)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = dbname)))
OK (110 msec)
C:\>SQLPLUS /NOLOG
SQL*Plus: Release 12.1.0.2.0 Production on Sat Jan 28 08:55:54 2017
Copyright (c) 1982, 2014, Oracle. All rights reserved.
SQL> connect /as sysdba
ERROR:
ORA-12560: TNS:protocol adapter error
SQL> exit
C:\>set ORACLE_SID=dbname
C:\>sqlplus /nolog
SQL*Plus: Release 12.1.0.2.0 Production on Sat Jan 28 08:56:46 2017
Copyright (c) 1982, 2014, Oracle. All rights reserved.
SQL> connect /as sysdba
ERROR:
ORA-01017: invalid username/password; logon denied
