How to view the database status in Oracle?

There are several methods available in Oracle database to view the status of the database.

1. Connect to the database using SQL*Plus or SQL Developer, and then execute the following SQL statement to view the status of the database:

SELECT STATUS FROM V$INSTANCE;

1. Additionally, you can use the following SQL statement to monitor the performance of the database:

SELECT * FROM V$DATABASE;

1. You can also use the following SQL statement to view performance metrics for the database:

SELECT * FROM V$SYSSTAT WHERE NAME='user commits';

These SQL statements can help you view the operational status and performance metrics of an Oracle database.