归档特别多用以下语句查下,几点的归档切换量特别大,然后针对性的去抓AWR,然后贴出来看:
- SELECT A.THREAD#, SUBSTR(TO_CHAR(FIRST_TIME, 'MM/DD/RR HH:MI:SS'),1,5) DAY,
- SUM(DECODE(SUBSTR(TO_CHAR(FIRST_TIME, 'MM/DD/RR HH24:MI:SS'),10,2),'00',1,0)) H00,
- SUM(DECODE(SUBSTR(TO_CHAR(FIRST_TIME, 'MM/DD/RR HH24:MI:SS'),10,2),'01',1,0)) H01,
- SUM(DECODE(SUBSTR(TO_CHAR(FIRST_TIME, 'MM/DD/RR HH24:MI:SS'),10,2),'02',1,0)) H02,
- SUM(DECODE(SUBSTR(TO_CHAR(FIRST_TIME, 'MM/DD/RR HH24:MI:SS'),10,2),'03',1,0)) H03,
- SUM(DECODE(SUBSTR(TO_CHAR(FIRST_TIME, 'MM/DD/RR HH24:MI:SS'),10,2),'04',1,0)) H04,
- SUM(DECODE(SUBSTR(TO_CHAR(FIRST_TIME, 'MM/DD/RR HH24:MI:SS'),10,2),'05',1,0)) H05,
- SUM(DECODE(SUBSTR(TO_CHAR(FIRST_TIME, 'MM/DD/RR HH24:MI:SS'),10,2),'06',1,0)) H06,
- SUM(DECODE(SUBSTR(TO_CHAR(FIRST_TIME, 'MM/DD/RR HH24:MI:SS'),10,2),'07',1,0)) H07,
- SUM(DECODE(SUBSTR(TO_CHAR(FIRST_TIME, 'MM/DD/RR HH24:MI:SS'),10,2),'08',1,0)) H08,
- SUM(DECODE(SUBSTR(TO_CHAR(FIRST_TIME, 'MM/DD/RR HH24:MI:SS'),10,2),'09',1,0)) H09,
- SUM(DECODE(SUBSTR(TO_CHAR(FIRST_TIME, 'MM/DD/RR HH24:MI:SS'),10,2),'10',1,0)) H10,
- SUM(DECODE(SUBSTR(TO_CHAR(FIRST_TIME, 'MM/DD/RR HH24:MI:SS'),10,2),'11',1,0)) H11,
- SUM(DECODE(SUBSTR(TO_CHAR(FIRST_TIME, 'MM/DD/RR HH24:MI:SS'),10,2),'12',1,0)) H12,
- SUM(DECODE(SUBSTR(TO_CHAR(FIRST_TIME, 'MM/DD/RR HH24:MI:SS'),10,2),'13',1,0)) H13,
- SUM(DECODE(SUBSTR(TO_CHAR(FIRST_TIME, 'MM/DD/RR HH24:MI:SS'),10,2),'14',1,0)) H14,
- SUM(DECODE(SUBSTR(TO_CHAR(FIRST_TIME, 'MM/DD/RR HH24:MI:SS'),10,2),'15',1,0)) H15,
- SUM(DECODE(SUBSTR(TO_CHAR(FIRST_TIME, 'MM/DD/RR HH24:MI:SS'),10,2),'16',1,0)) H16,
- SUM(DECODE(SUBSTR(TO_CHAR(FIRST_TIME, 'MM/DD/RR HH24:MI:SS'),10,2),'17',1,0)) H17,
- SUM(DECODE(SUBSTR(TO_CHAR(FIRST_TIME, 'MM/DD/RR HH24:MI:SS'),10,2),'18',1,0)) H18,
- SUM(DECODE(SUBSTR(TO_CHAR(FIRST_TIME, 'MM/DD/RR HH24:MI:SS'),10,2),'19',1,0)) H19,
- SUM(DECODE(SUBSTR(TO_CHAR(FIRST_TIME, 'MM/DD/RR HH24:MI:SS'),10,2),'20',1,0)) H20,
- SUM(DECODE(SUBSTR(TO_CHAR(FIRST_TIME, 'MM/DD/RR HH24:MI:SS'),10,2),'21',1,0)) H21,
- SUM(DECODE(SUBSTR(TO_CHAR(FIRST_TIME, 'MM/DD/RR HH24:MI:SS'),10,2),'22',1,0)) H22,
- SUM(DECODE(SUBSTR(TO_CHAR(FIRST_TIME, 'MM/DD/RR HH24:MI:SS'),10,2),'23',1,0)) H23,
- COUNT(*) TOTAL
- FROM GV$LOG_HISTORY A
- WHERE FIRST_TIME>=TO_CHAR(SYSDATE-30)
- GROUP BY A.THREAD#,
- SUBSTR(TO_CHAR(FIRST_TIME, 'MM/DD/RR HH:MI:SS'),1,5)
- ORDER BY A.THREAD#,SUBSTR(TO_CHAR(FIRST_TIME, 'MM/DD/RR HH:MI:SS'),1,5) DESC;
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