How can I check the version of the Oracle database?

To check the version of the Oracle database, you can use one of the following methods:

1. Connect to the database using SQL*Plus and execute the following command:
2. Show me all the information from the V$VERSION table.
3. This will display information about the database version, including the major version number, minor version number, and patch level.
4. Connect to the database using SQL Developer or a similar database management tool and navigate to the “Database” > “Information” option in the view menu to display the version information of the database.
5. Execute the following command in the operating system command line:
6. What is the version of sqlplus?
7. This will display the version information of SQL*Plus, including the version of the connected database.

Regardless of the method used, one should be able to locate the version information of the Oracle database.