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

Since no message named 'a' is likely to be sent, the database simply pauses for those 2 seconds before continuing.

To protect against this type of vulnerability, you should implement the following: MEGA'/**/and/**/DBMS_PIPE.RECEIVE_MESSAGE('a',2)='a

: This is the most effective defense. It ensures the database treats the input as data only, never as executable code. Since no message named 'a' is likely to

: A logical operator used to append a new condition to the original query. : A logical operator used to append a

The second parameter ( 2 ) tells the database to wait for for a message.

In a "blind" injection, the database doesn't return error messages or data directly to the screen. Instead, the attacker observes the : The attacker sends the request.

: This is likely a placeholder or a legitimate input value followed by a single quote ( ' ). The quote is used to "break out" of the intended SQL query string.