How to check the running status of an Oracle database o…

In the Linux system, you can check the running status of an Oracle database by the following method:

1. Check the process status of the database using the ps command.
2. List all processes using the ‘oracle’ user.
3. This will list all processes containing the keyword “oracle”, displaying information such as the process ID, user, and start time.
4. Check the status of the database instance.
5. – Accessing SQLplus as the sysdba, retrieve the STATUS column from the V$INSTANCE table.
6. This will display the current status of the database instance, such as OPEN (opened), MOUNTED (mounted), or STARTED (started).
7. Check the status of the listener using the lsnrctl command.
8. Check the listener status.
9. This will display the status of the listener, including the listening address, listening port, and the Listener’s operational status.
10. Viewing the log files of the database:
11. Monitor the live updates of the alert log file located in $ORACLE_HOME/admin//bdump/alert_.log.
12. This will display real-time logs of the database, including information on the database’s startup and shutdown.

Note: In the above operation, replace with the name of your database instance.