Mega'/**/and/**/dbms_pipe.receive_message('a',2)='a Apr 2026

: This completes the logical condition. If the database pauses and then returns the page normally, the attacker confirms the application is vulnerable to SQL injection. How the Attack Works

The string MEGA'/**/and/**/DBMS_PIPE.RECEIVE_MESSAGE('a',2)='a is a classic example of a payload specifically targeting Oracle databases. Analysis of the Payload MEGA'/**/and/**/DBMS_PIPE.RECEIVE_MESSAGE('a',2)='a

The second parameter ( 2 ) tells the database to wait for for a message. : This completes the logical condition