How to query Oracle version

How to query the Oracle version requires specific code examples

Oracle database is a commonly used relational database management system. Different versions of Oracle database may have different Features and functionality. Therefore, when performing database development or maintenance, it is sometimes necessary to query the version information of the Oracle database for better database operations. The following will introduce how to query the version information of the Oracle database and provide specific code examples.

In the Oracle database, you can query the version information of the database by executing SQL statements. Generally speaking, the version information of the database can be obtained by querying the system view of the database or through database functions. The following will introduce two methods to query the version information of the Oracle database.

1. Obtain Oracle database version information by querying the system view

In the Oracle database, you can obtain the database version information by querying the system view v$version Version Information. This view contains the database version number, version name, and other related information.

The following is an example SQL statement for querying the version information of the Oracle database:

SELECT banner
FROM v$version;

Execute the above SQL statement to obtain the version information of the database, for example:

Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production
PL/SQL Release 12.2.0.1.0 - Production

The above query results display the version information of the Oracle database, including the database version number and other related information.

2. Get Oracle database version information through database functions

In Oracle database, you can also obtain the database version information by using database functions. Oracle provides a function SELECT * FROM PRODUCT_COMPONENT_VERSION; that can be used to query the version information of the database.

The following is an example SQL statement, used to obtain the version information of the Oracle database through database functions:

SELECT * FROM PRODUCT_COMPONENT_VERSION;

Execute the above SQL statement, and you can also obtain the version information of the database, for example:

PRODUCT                                VERSION        STATUS
-------------------------------------- -------------- -------
NLSRTL                                 19.0.0.0.0     Production
Oracle Database 19c Enterprise Edition 19.0.0.0.0     Production
PL/SQL                                 19.0.0.0.0     Production

The above query results display the version information of the Oracle database, including the version numbers and status information of different components.

In summary, you can easily obtain the version information of the Oracle database by querying the system view or using database functions. When developing and maintaining a database, querying the version information of the database is a common operation, which can help developers better understand the functions and features of the database, and thus perform better database operations.

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