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Top 5 Timed Events Avg %Total
~~~~~~~~~~~~~~~~~~ wait Call
Event Waits Time (s) (ms) Time Wait Class
------------------------------ ------------ ----------- ------ ------ ----------
library cache pin 3,357 9,211 2744 29.6 Concurrenc
SGA: allocation forcing compon 788,976 7,746 10 24.9 Other
latch: library cache 20,840 5,135 246 16.5 Concurrenc
CPU time 2,103 6.8
latch: shared pool 7,214 1,527 212 4.9 Concurrenc
这个是15点到14点的awrrpt中的一段。
看来shared pool 的问题很严重啊。
Time Model Statistics DB/Inst: WBOEE/wboee Snaps: 12839-12840
-> Total time in database user-calls (DB Time): 31116.2s
-> Statistics including the word "background" measure background process
time, and so do not contribute to the DB time statistic
-> Ordered by % or DB time desc, Statistic name
Statistic Name Time (s) % of DB Time
------------------------------------------ ------------------ ------------
parse time elapsed 22,288.6 71.6
sql execute elapsed time 8,693.2 27.9
DB CPU 2,102.6 6.8
hard parse elapsed time 1,378.4 4.4
connection management call elapsed time 180.4 .6
failed parse elapsed time 106.5 .3
PL/SQL execution elapsed time 92.9 .3
sequence load elapsed time 40.8 .1
而且sql编译的时间很多。 |
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