Oracle Message ORA-01033 - ORACLE initialization or shutdown in progress

ERRORORACLE initialization or shutdown in progress
CAUSEAn attempt was made to log on while Oracle is being started up or shutdown.
ACTIONWait a few minutes. Then retry the operation.

655240Composite SAP note: ORA-01033
759839Termination in BRARCHIVE when database has a MOUNT status
556232Environment settings for R/3/Oracle on Windows
1915317Migrating Software Owner to 'oracle'