Starting and Shutting Down Oracle Single Instance Database

To stop oracle single instance database SQL> shut immediate; OR SQL> shut abort; OR SQL> alter database close;  SQL> alter database dismount; SQL> shut immediate; OR SQL> shut normal        OR        SQL> shut       To start oracle single instance database SQL> startup; OR SQL> startup pfile='/pfile_location/pfile.ora'; OR SQL> startup nomount; SQL> alter database mount; SQL> alter database open; OR SQL> startup pfile='/pfile_location/pfile.ora'; OR SQL> startup nomount pfile='/pfile_location/pfile.ora'; SQL> alter database mount; SQL> alter database open; OR SQL> startup mount; SQL> alter database open; OR SQL> startup mount pfile='/pfile_location/pfile.ora'; SQL> alter database open;