'Initorcl' file missing I recently installed Oracle 12c on my system on windows10. On sqlplus " /as sysdba"
I get connected to an idle instance.
So I executed startup. Now I get error 

SQL&gt; startup
ORA-01078: failure in processing system parameters
LRM-00109: could not open parameter file 
'C:\ORACLE12C\12C\PRODUCT\12.2.0\DBHOME_1\DATABASE\INITORCL.ORA'


I checked the path, the Initorcl file does not exist at the path.

What is the next step to get this configured?
You need to create new parameter file,search for file alert_orcl.log ,open that file copy all parameters(only lines with "=" signs) after the line "System parameters with non-default values:" to a new file orcl.ora in any location e.g C:\orcl.ora 

Next start the database 

  startup pfile='C:\orcl.ora'; -- if successful go to next step
  create spfile from memory;    --create spfile 
  create pfile='C:\oracle12c\initORCL.ora' from memory --backup pfile


Always use rman to backup spfile and controlfiles.

Note:-You'll find alert_orcl.log in ORACLE_BASE\diag\rdbms\orcl\orcl\trace(start from diag folder in oracle base directory)