重做日志时间戳说明

declare

stime timestamp;

dtime timestamp;

etime timestamp;

begin

for i in 1 .. 10 loop

stime := systimestamp;

insert into tim values (i, systimestamp);

etime := systimestamp;

select itime into dtime from tim where tn = i;

dbms_output.put_line('start time: ' || to_char(stime,'HH24:MI:SS:FF') || ' doing time: ' ||

to_char(dtime,'HH24:MI:SS:FF') || ' end time:' || to_char(etime,'HH24:MI:SS:FF'));

dbms_lock.sleep(2.9);

commit;

end loop;

end;

start time: 15:10:06:986235000 doing time: 15:10:06:987493000 end time:15:10:06:987962000

start time: 15:10:09:894372000 doing time: 15:10:09:894505000 end time:15:10:09:894738000

start time: 15:10:12:796921000 doing time: 15:10:12:797057000 end time:15:10:12:797293000

start time: 15:10:15:698497000 doing time: 15:10:15:698642000 end time:15:10:15:698856000

start time: 15:10:18:601077000 doing time: 15:10:18:601222000 end time:15:10:18:601451000

start time: 15:10:21:502664000 doing time: 15:10:21:502803000 end time:15:10:21:503044000

start time: 15:10:24:405294000 doing time: 15:10:24:405435000 end time:15:10:24:405673000

start time: 15:10:27:307828000 doing time: 15:10:27:307979000 end time:15:10:27:308193000

start time: 15:10:30:209477000 doing time: 15:10:30:209619000 end time:15:10:30:209865000

start time: 15:10:33:112033000 doing time: 15:10:33:112173000 end time:15:10:33:112397000