ORA-1033: ORACLE initialization or shutdown in progress
For your database to open and mount, first ensure that you are logged in as the user oracle
Then start by checking whether your listener has been started, using the command
lsnrctl status

Also, please provide the details of the environment in which you are running Oracle, i.e as an active/standby in dataguard, or standalone, and also what version of Oracle you are using. Also check your alertlog /opt/oracle/admin/databasename/bdump/alert_databasename.log if there are any clues here.