确认oracle是否繁忙,数据库繁忙程度监控

繁忙,数据库繁忙程度监控"/>

确认oracle是否繁忙,数据库繁忙程度监控

获取最近时间数据库redolog切换频率分布数据

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", to_char(ROUND (COUNT (1) / 24, 2),'fm99999999990.00') "Avg"

FROM gv$log_history

WHERE first_time >= trunc(SYSDATE) - 30

and thread# = inst_id

GROUP BY TRUNC (first_time), TO_CHAR (first_time, 'Dy')

ORDER BY 1 DESC;