Learn the motive and how to get to the bottom of the ORA-01033 error message in Oracle.
When you come across an ORA-01033 error, the following error message will appear:
ORA-01033: Oracle startup or shutdown in progress
You have tried to log onto Oracle while Oracle used to be being both shut down or commenced up.
The option(s) to resolve this Oracle error are:
Wait till the Oracle database has been top restarted earlier than trying to log in.