How to check the installed version of Oracle

How to check the Oracle installation version and specific code examples

Oracle database is one of the most popular relational database management systems in the world, with many versions. Each version has different features and functions. When performing Oracle database management and maintenance work, it is very important to understand the installed version of the database. This article will introduce how to check the installed version of Oracle database and provide specific code examples.

The installed version of the Oracle database can be viewed in two ways: through the SQL command of the Oracle database or through the metadata table of the database. These two methods will be introduced below.

Method 1: Check the installation version of the Oracle database through SQL commands
Execute the following SQL statement in the SQL command line of the Oracle database to check the version information of the database:

SELECT * FROM v$version;

Execute the above SQL After the statement, Oracle database will return version information, including database version, PL/SQL version, etc. Through this information, you can obtain the specific version number of the database and other related information.

Method 2: View the installed version of the Oracle database through the database metadata table
In addition to querying using SQL statements, you can also obtain the version information of the Oracle database by accessing the metadata table of the database. The following is a specific code example to obtain the Oracle database version information by querying the metadata table:

SELECT banner FROM v$version WHERE banner LIKE 'Oracle%';

After executing the above SQL statement, the Oracle database will return version information containing the "Oracle" keyword, including The specific version number of the database. This method can also help users obtain the installation version information of the database.

Summary
Through the above two methods, you can easily check the installation version information of the Oracle database. When performing database management and maintenance work, knowing the version number of the database is very important for debugging and troubleshooting problems. We hope that the above methods and code examples can help readers obtain the installation version information of Oracle database more easily.

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