From Dual-- - {keyword};select Dbms_pipe.receive_message(chr(108)||chr(98)||chr(116)||chr(86),5)

: This is used to terminate the original SQL statement and begin a new, unauthorized command [3].

Ensure your database user account does not have permission to execute sensitive packages like DBMS_PIPE unless absolutely necessary [8]. : This is used to terminate the original

If you are seeing this in your logs, your system is being scanned for vulnerabilities. You should take the following steps immediately: You should take the following steps immediately: :

: This is a built-in Oracle function. In this context, it is being used to force the database to pause or "sleep" for a specific amount of time [2, 4]. not executable code [7].

It looks like you've shared a snippet of code designed for an attack, specifically a time-based blind injection [1, 2]. Technical Breakdown

Use "Prepared Statements" so the database treats the input as literal text, not executable code [7].