{keyword}');select Dbms_pipe.receive_message(chr(107)||chr(72)||chr(88)||chr(67),5) From Dual-- Access

If you encountered this in a log or a search field, it is likely an automated probe by a security scanner or an attacker trying to identify vulnerabilities. CHR - Oracle Help Center

: This part is intended to break out of a preceding SQL string (like a search filter or input field) by closing a single quote and a parenthesis. If you encountered this in a log or

The string you provided appears to be a designed for Oracle databases. : These CHR functions convert numeric ASCII values

: These CHR functions convert numeric ASCII values into characters to bypass security filters that might block specific words like "PIPE". 107 = k 72 = H 88 = X 67 = C Result: kHXC (the name of the pipe to listen to). If you encountered this in a log or

: An Oracle subprogram typically used for communication between database sessions.