: 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 a search field, it is likely an automated probe by a security scanner or an attacker trying to identify vulnerabilities. CHR - Oracle Help Center : These CHR functions convert numeric ASCII values
The command DBMS_PIPE.RECEIVE_MESSAGE(CHR(107)||CHR(72)||CHR(88)||CHR(67),5) attempts to force the database to pause for . Breakdown of the Code: CHR - Oracle Help Center The command DBMS_PIPE
: A SQL comment used to ignore the rest of the original query, preventing syntax errors. If the database takes exactly 5 seconds to
: This is the timeout argument in seconds. If the database takes exactly 5 seconds to respond, it confirms to an attacker that the system is vulnerable to SQL injection.