ORA-01033: ORACLE initialization or shutdown in progress or Process ID: 0 & Session ID: 0

ORA-01033: ORACLE initialization or shutdown in progress  or Process ID: 0 & Session ID: 0

Some times database will not mount correctly. we need to mount it manually step by step..

C:\Users\Administrator>sqlplus

SQL*Plus: Release 11.2.0.2.0 Production on Mon Jul 25 14:59:33 2016

Copyright (c) 1982, 2010, Oracle.  All rights reserved.

Enter user-name: system
Enter password:
ERROR:
ORA-01033: ORACLE initialization or shutdown in progress
Process ID: 0
Session ID: 0 Serial number: 0


Enter user-name:

For manual  shutdown and startup the database you need to follow the steps, first Shut down it and start it up then mount.see following commands and how to run the commands.

1. sqlplus / as sysdba;
2. shutdown immediate;
3. startup nomount;
4. alter database mount;
5. alter database open;

in case when you run the fist command " sqlplus / as sysdba;"  and if you get any errors like "ERROR:
ORA-01031: insufficient privileges.

then you have to run it as  "sys as sysdba"  and followed by the sequence.

Please check the below image I have executed the commands and able to connect the sysdba user.

Once all the commands were executed successfully, now oracle is mounted and open state and your able to connect the users.

In the above image also I am not able to connect sysdba, the I will use the sys as sysdba to connect.