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Oracle Getting started with PL SQL

Hello World

SET serveroutput ON
 message CONSTANT VARCHAR2(32767):= 'Hello, World!';

Command SET serveroutput ON is required in SQL*Plus and SQL Developer clients to enable the output of DBMS_OUTPUT. Without the command nothing is displayed.

The END; line signals the end of the anonymous PL/SQL block. To run the code from SQL command line, you may need to type / at the beginning of the first blank line after the last line of the code. When the above code is executed at SQL prompt, it produces the following result:

Hello, World!
PL/SQL procedure successfully completed.


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