归档日志的切换频率

SELECT   TRUNC (first_time) "Date", TO_CHAR (first_time, 'Dy') "Day",
         COUNT (1) "Total",
         SUM (DECODE (TO_CHAR (first_time, 'hh24'), '00', 1, 0)) "h0",
         SUM (DECODE (TO_CHAR (first_time, 'hh24'), '01', 1, 0)) "h1",
         SUM (DECODE (TO_CHAR (first_time, 'hh24'), '02', 1, 0)) "h2",
         SUM (DECODE (TO_CHAR (first_time, 'hh24'), '03', 1, 0)) "h3",
         SUM (DECODE (TO_CHAR (first_time, 'hh24'), '04', 1, 0)) "h4",
         SUM (DECODE (TO_CHAR (first_time, 'hh24'), '05', 1, 0)) "h5",
         SUM (DECODE (TO_CHAR (first_time, 'hh24'), '06', 1, 0)) "h6",
         SUM (DECODE (TO_CHAR (first_time, 'hh24'), '07', 1, 0)) "h7",
         SUM (DECODE (TO_CHAR (first_time, 'hh24'), '08', 1, 0)) "h8",
         SUM (DECODE (TO_CHAR (first_time, 'hh24'), '09', 1, 0)) "h9",
         SUM (DECODE (TO_CHAR (first_time, 'hh24'), '10', 1, 0)) "h10",
         SUM (DECODE (TO_CHAR (first_time, 'hh24'), '11', 1, 0)) "h11",
         SUM (DECODE (TO_CHAR (first_time, 'hh24'), '12', 1, 0)) "h12",
         SUM (DECODE (TO_CHAR (first_time, 'hh24'), '13', 1, 0)) "h13",
         SUM (DECODE (TO_CHAR (first_time, 'hh24'), '14', 1, 0)) "h14",
         SUM (DECODE (TO_CHAR (first_time, 'hh24'), '15', 1, 0)) "h15",
         SUM (DECODE (TO_CHAR (first_time, 'hh24'), '16', 1, 0)) "h16",
         SUM (DECODE (TO_CHAR (first_time, 'hh24'), '17', 1, 0)) "h17",
         SUM (DECODE (TO_CHAR (first_time, 'hh24'), '18', 1, 0)) "h18",
         SUM (DECODE (TO_CHAR (first_time, 'hh24'), '19', 1, 0)) "h19",
         SUM (DECODE (TO_CHAR (first_time, 'hh24'), '20', 1, 0)) "h20",
         SUM (DECODE (TO_CHAR (first_time, 'hh24'), '21', 1, 0)) "h21",
         SUM (DECODE (TO_CHAR (first_time, 'hh24'), '22', 1, 0)) "h22",
         SUM (DECODE (TO_CHAR (first_time, 'hh24'), '23', 1, 0)) "h23",
         ROUND (COUNT (1) / 24, 2) "Avg"
    FROM gv$log_history
   WHERE thread# = inst_id
GROUP BY TRUNC (first_time), TO_CHAR (first_time, 'Dy')
ORDER BY 1

 

 

 

 

 

 

 

 

 

 

 

SELECT
TO_CHAR(first_time,'MM/DD') DAY
--, TO_CHAR(first_time,'YYYY/MM/DD') DAY2
, SUM(DECODE(TO_CHAR(first_time, 'HH24'),'00',1,0)) H00
, SUM(DECODE(TO_CHAR(first_time, 'HH24'),'01',1,0)) H01
, SUM(DECODE(TO_CHAR(first_time, 'HH24'),'02',1,0)) H02
, SUM(DECODE(TO_CHAR(first_time, 'HH24'),'03',1,0)) H03
, SUM(DECODE(TO_CHAR(first_time, 'HH24'),'04',1,0)) H04
, SUM(DECODE(TO_CHAR(first_time, 'HH24'),'05',1,0)) H05
, SUM(DECODE(TO_CHAR(first_time, 'HH24'),'06',1,0)) H06
, SUM(DECODE(TO_CHAR(first_time, 'HH24'),'07',1,0)) H07
, SUM(DECODE(TO_CHAR(first_time, 'HH24'),'08',1,0)) H08
, SUM(DECODE(TO_CHAR(first_time, 'HH24'),'09',1,0)) H09
, SUM(DECODE(TO_CHAR(first_time, 'HH24'),'10',1,0)) H10
, SUM(DECODE(TO_CHAR(first_time, 'HH24'),'11',1,0)) H11
, SUM(DECODE(TO_CHAR(first_time, 'HH24'),'12',1,0)) H12
, SUM(DECODE(TO_CHAR(first_time, 'HH24'),'13',1,0)) H13
, SUM(DECODE(TO_CHAR(first_time, 'HH24'),'14',1,0)) H14
, SUM(DECODE(TO_CHAR(first_time, 'HH24'),'15',1,0)) H15
, SUM(DECODE(TO_CHAR(first_time, 'HH24'),'16',1,0)) H16
, SUM(DECODE(TO_CHAR(first_time, 'HH24'),'17',1,0)) H17
, SUM(DECODE(TO_CHAR(first_time, 'HH24'),'18',1,0)) H18
, SUM(DECODE(TO_CHAR(first_time, 'HH24'),'19',1,0)) H19
, SUM(DECODE(TO_CHAR(first_time, 'HH24'),'20',1,0)) H20
, SUM(DECODE(TO_CHAR(first_time, 'HH24'),'21',1,0)) H21
, SUM(DECODE(TO_CHAR(first_time, 'HH24'),'22',1,0)) H22
, SUM(DECODE(TO_CHAR(first_time, 'HH24'),'23',1,0)) H23
, COUNT(*)||'('||trim(to_char(sum(blocks*block_size)/1024/1024,'99,999.9'))||'M)' TOTAL
FROM
(select max(blocks) blocks,max(block_size) block_size,max(first_time) first_time
from
v$archived_log a
where COMPLETION_TIME > sysdate - &day
and dest_id = 1
group by sequence#
)
group by TO_CHAR(first_time,'MM/DD'), TO_CHAR(first_time,'YYYY/MM/DD')
order by TO_CHAR(first_time,'YYYY/MM/DD') desc