10일 20일 30일 1 1 2 dbms_pipe.receive_me 3 SLEEP20 2 4 kYHv. 6 5 PG_SLEEP20 1 6 OR 3 7 6145 1 8 kYHv 1 9 kYHvGXUndFhLsqWm 2 10 dbms_pipe.receive_messagea20 3 11 WAITFOR 7 1 1 2 dbms_pipe.receive_me 3 OR 4 SLEEP20 5 PG_SLEEP20 6 WAITFOR 7 kYHv. 8 dbms_pipe.receive_messagea20 1 9 6145 10 kYHv 11 kYHvGXUndFhLsqWm 1 1 1 2 dbms_pipe.receive_me 1 3 OR 2 4 SLEEP20 1 5 PG_SLEEP20 1 6 WAITFOR 2 7 dbms_pipe.receive_messagea20 8 kYHv. 9 6145 10 kYHv 11 kYHvGXUndFhLsqWm 11위 - 20위