Log Switch History Matrix
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- The matrix of log switch history
Reference: http://www.confio.com/English/Tips/Log_File_Switch_Completion.php
SET lines 120 col "DAY(YYYY-MM-DD)" format A13 col "00" format A3 col "01" format A3 col "02" format A3 col "03" format A3 col "04" format A3 col "05" format A3 col "06" format A3 col "07" format A3 col "08" format A3 col "09" format A3 col "10" format A3 col "11" format A3 col "12" format A3 col "13" format A3 col "14" format A3 col "15" format A3 col "16" format A3 col "17" format A3 col "18" format A3 col "19" format A3 col "20" format A3 col "21" format A3 col "22" format A3 col "23" format A3 SELECT to_char(first_time,'YYYY-MM-DD') "DAY(YYYY-MM-DD)", to_char(sum(decode(to_char(first_time,'HH24'),'00',1,0)),'99') "00", to_char(sum(decode(to_char(first_time,'HH24'),'01',1,0)),'99') "01", to_char(sum(decode(to_char(first_time,'HH24'),'02',1,0)),'99') "02", to_char(sum(decode(to_char(first_time,'HH24'),'03',1,0)),'99') "03", to_char(sum(decode(to_char(first_time,'HH24'),'04',1,0)),'99') "04", to_char(sum(decode(to_char(first_time,'HH24'),'05',1,0)),'99') "05", to_char(sum(decode(to_char(first_time,'HH24'),'06',1,0)),'99') "06", to_char(sum(decode(to_char(first_time,'HH24'),'07',1,0)),'99') "07", to_char(sum(decode(to_char(first_time,'HH24'),'08',1,0)),'99') "08", to_char(sum(decode(to_char(first_time,'HH24'),'09',1,0)),'99') "09", to_char(sum(decode(to_char(first_time,'HH24'),'10',1,0)),'99') "10", to_char(sum(decode(to_char(first_time,'HH24'),'11',1,0)),'99') "11", to_char(sum(decode(to_char(first_time,'HH24'),'12',1,0)),'99') "12", to_char(sum(decode(to_char(first_time,'HH24'),'13',1,0)),'99') "13", to_char(sum(decode(to_char(first_time,'HH24'),'14',1,0)),'99') "14", to_char(sum(decode(to_char(first_time,'HH24'),'15',1,0)),'99') "15", to_char(sum(decode(to_char(first_time,'HH24'),'16',1,0)),'99') "16", to_char(sum(decode(to_char(first_time,'HH24'),'17',1,0)),'99') "17", to_char(sum(decode(to_char(first_time,'HH24'),'18',1,0)),'99') "18", to_char(sum(decode(to_char(first_time,'HH24'),'19',1,0)),'99') "19", to_char(sum(decode(to_char(first_time,'HH24'),'20',1,0)),'99') "20", to_char(sum(decode(to_char(first_time,'HH24'),'21',1,0)),'99') "21", to_char(sum(decode(to_char(first_time,'HH24'),'22',1,0)),'99') "22", to_char(sum(decode(to_char(first_time,'HH24'),'23',1,0)),'99') "23" FROM v$log_history group by to_char(first_time,'YYYY-MM-DD') ORDER BY "DAY(YYYY-MM-DD)"; DAY(YYYY-MM-D 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 ------------- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- 2011-01-08 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2011-01-09 0 0 0 0 0 0 0 0 4 5 0 0 0 0 0 3 4 0 1 7 3 11 1 1 2011-01-10 1 0 0 0 0 0 0 0 4 7 16 0 2 2 9 14 7 0 4 7 7 10 2 11 2011-01-11 7 0 4 0 1 8 9 7 9 12 6 21 3 7 8 15 0 6 9 10 9 0 13 8 2011-01-12 8 0 1 7 11 13 0 4 0 23 8 13 2 9 10 14 0 3 5 13 2 6 9 22 2011-01-13 0 8 10 4 8 1 2 0 14 17 10 0 0 7 8 15 12 0 16 8 9 16 6 14 2011-01-14 11 1 8 18 6 9 6 15 0 7 18 14 0 7 18 27 0 1 11 7 12 6 8 16 2011-01-15 10 9 8 19 6 9 6 10 9 18 6 12 12 11 6 13 6 9 9 0 6 15 16 12
