Oracle 11.2.0.4.0 SE-One on Windows 7 Professional.
Connect as sysdba, shutdown, but on startup (in the same sqlplus session) ...
g:\scripts>sqlplus / as sysdba
SQL*Plus: Release 11.2.0.4.0 Production on Wed Nov 29 07:52:06 2017
Copyright (c) 1982, 2013, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Release 11.2.0.4.0 - 64bit Production
SQL> shutdown immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> create spfile from pfile;
File created.
SQL> startup
ORA-01017: invalid username/password; logon denied
SQL> exit
Disconnected from Oracle Database 11g Release 11.2.0.4.0 - 64bit Production
g:\scripts>sqlplus / as sysdba
SQL*Plus: Release 11.2.0.4.0 Production on Wed Nov 29 07:55:48 2017
Copyright (c) 1982, 2013, Oracle. All rights reserved.
ERROR:
ORA-01017: invalid username/password; logon denied