How can you check the version of Oracle?
To determine the version of Oracle database, one of the following methods can be used:
- Login to the Oracle database and use the following command to query the version information:
SELECT * FROM v$version;
This command will display the database version number and other relevant information.
- If you are unable to log in to the database, you can check the installation directory of the Oracle database. Within the installation directory, there is usually a folder named inventory. Inside this folder, you can find a folder named Components. Open this folder and look for a folder named oracle.rdbms, and open it. Within this folder, you will find a folder named catproc. Inside this folder, there will be a folder named sql. Inside this folder, there will be a file named version.sql. Open this file to view the database version information.
- If you are unable to access the file system on the database server, you can try using tools or scripts provided by Oracle to retrieve version information. For example, you can use the opatch tool to query installed patches and version information. Run the opatch tool with the following command:
opatch lsinventory
This will display the installed patches and version information.
You can find the version information of the Oracle database using any method.
