oracle實用sql(1)--redolog歸檔頻率

selectshen發表於2016-06-03
OracleSQL

點選(此處)摺疊或開啟

  1. SELECT trunc(first_time) "Date",
  2.         to_char(first_time, 'Dy') "Day",
  3.         count(1) "Total",
  4.         SUM(decode(to_char(first_time, 'hh24'),'00',1,0)) "h0",
  5.         SUM(decode(to_char(first_time, 'hh24'),'01',1,0)) "h1",
  6.         SUM(decode(to_char(first_time, 'hh24'),'02',1,0)) "h2",
  7.         SUM(decode(to_char(first_time, 'hh24'),'03',1,0)) "h3",
  8.         SUM(decode(to_char(first_time, 'hh24'),'04',1,0)) "h4",
  9.         SUM(decode(to_char(first_time, 'hh24'),'05',1,0)) "h5",
  10.         SUM(decode(to_char(first_time, 'hh24'),'06',1,0)) "h6",
  11.         SUM(decode(to_char(first_time, 'hh24'),'07',1,0)) "h7",
  12.         SUM(decode(to_char(first_time, 'hh24'),'08',1,0)) "h8",
  13.         SUM(decode(to_char(first_time, 'hh24'),'09',1,0)) "h9",
  14.         SUM(decode(to_char(first_time, 'hh24'),'10',1,0)) "h10",
  15.         SUM(decode(to_char(first_time, 'hh24'),'11',1,0)) "h11",
  16.         SUM(decode(to_char(first_time, 'hh24'),'12',1,0)) "h12",
  17.         SUM(decode(to_char(first_time, 'hh24'),'13',1,0)) "h13",
  18.         SUM(decode(to_char(first_time, 'hh24'),'14',1,0)) "h14",
  19.         SUM(decode(to_char(first_time, 'hh24'),'15',1,0)) "h15",
  20.         SUM(decode(to_char(first_time, 'hh24'),'16',1,0)) "h16",
  21.         SUM(decode(to_char(first_time, 'hh24'),'17',1,0)) "h17",
  22.         SUM(decode(to_char(first_time, 'hh24'),'18',1,0)) "h18",
  23.         SUM(decode(to_char(first_time, 'hh24'),'19',1,0)) "h19",
  24.         SUM(decode(to_char(first_time, 'hh24'),'20',1,0)) "h20",
  25.         SUM(decode(to_char(first_time, 'hh24'),'21',1,0)) "h21",
  26.         SUM(decode(to_char(first_time, 'hh24'),'22',1,0)) "h22",
  27.         SUM(decode(to_char(first_time, 'hh24'),'23',1,0)) "h23",
  28.         decode(trunc(first_time),
  29.                trunc(sysdate), round(count(1) / (24 * to_number(to_char(sysdate, 'sssss')+1) / 86400),2),
  30.                round(count(1) / 24, 2)) "Avg"
  31. FROM V$log_history
  32. group by trunc(first_time), to_char(first_time, 'Dy')
  33. Order by 1;

來自 “ ITPUB部落格 ” ，連結：http://blog.itpub.net/28539951/viewspace-2113727/，如需轉載，請註明出處，否則將追究法律責任。

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