SELECT
  to_char(first_time,'DD.MM.YYYY') DAY,
  to_char(SUM(decode(substr(to_char(first_time,'HH24'),1,2),'00',1,0)),'999') "00",
  to_char(SUM(decode(substr(to_char(first_time,'HH24'),1,2),'01',1,0)),'999') "01",
  to_char(SUM(decode(substr(to_char(first_time,'HH24'),1,2),'02',1,0)),'999') "02",
  to_char(SUM(decode(substr(to_char(first_time,'HH24'),1,2),'03',1,0)),'999') "03",
  to_char(SUM(decode(substr(to_char(first_time,'HH24'),1,2),'04',1,0)),'999') "04",
  to_char(SUM(decode(substr(to_char(first_time,'HH24'),1,2),'05',1,0)),'999') "05",
  to_char(SUM(decode(substr(to_char(first_time,'HH24'),1,2),'06',1,0)),'999') "06",
  to_char(SUM(decode(substr(to_char(first_time,'HH24'),1,2),'07',1,0)),'999') "07",
  to_char(SUM(decode(substr(to_char(first_time,'HH24'),1,2),'08',1,0)),'999') "08",
  to_char(SUM(decode(substr(to_char(first_time,'HH24'),1,2),'09',1,0)),'999') "09",
  to_char(SUM(decode(substr(to_char(first_time,'HH24'),1,2),'10',1,0)),'999') "10",
  to_char(SUM(decode(substr(to_char(first_time,'HH24'),1,2),'11',1,0)),'999') "11",
  to_char(SUM(decode(substr(to_char(first_time,'HH24'),1,2),'12',1,0)),'999') "12",
  to_char(SUM(decode(substr(to_char(first_time,'HH24'),1,2),'13',1,0)),'999') "13",
  to_char(SUM(decode(substr(to_char(first_time,'HH24'),1,2),'14',1,0)),'999') "14",
  to_char(SUM(decode(substr(to_char(first_time,'HH24'),1,2),'15',1,0)),'999') "15",
  to_char(SUM(decode(substr(to_char(first_time,'HH24'),1,2),'16',1,0)),'999') "16",
  to_char(SUM(decode(substr(to_char(first_time,'HH24'),1,2),'17',1,0)),'999') "17",
  to_char(SUM(decode(substr(to_char(first_time,'HH24'),1,2),'18',1,0)),'999') "18",
  to_char(SUM(decode(substr(to_char(first_time,'HH24'),1,2),'19',1,0)),'999') "19",
  to_char(SUM(decode(substr(to_char(first_time,'HH24'),1,2),'20',1,0)),'999') "20",
  to_char(SUM(decode(substr(to_char(first_time,'HH24'),1,2),'21',1,0)),'999') "21",
  to_char(SUM(decode(substr(to_char(first_time,'HH24'),1,2),'22',1,0)),'999') "22",
  to_char(SUM(decode(substr(to_char(first_time,'HH24'),1,2),'23',1,0)),'999') "23",
  COUNT(*) TOT
FROM
  v$log_history
WHERE first_time > SYSDATE-14
GROUP BY
  to_char(first_time,'DD.MM.YYYY')
ORDER BY
  to_date(DAY, 'DD.MM.YYYY');