Parameter File Could Not Open

Hellow,

I'm facing problem with my database ERROR : ORA-01033
I have done the following
Opened Dos command Prompt
c:> sqlplus /nolog
SQL> connect sys/oracle as sysdba
Connected.
SQL> shutdown immediate;
ORA-01109: database not open

Database dismounted.
ORACLE instance shut down.

SQL> startup
could not open parameter file 'C:\ORACLE\ORA10\DATABASE\INITIRMS.ORA'


Kindly assit me with this problem.

the file doesnt exist, what did you do with it?

I have done nothing the database was working fine when I left the Office yesterday but on opening it today the problem was detected (not opening)

well someone removed the parameter file, go restore it from your backup

If you have a copy of param file in some other location then mention that location during the startup.
STARTUP