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V$EVENT_HISTOGRAM

Li-Shan Cheng

2007-05-25

Replies:

Hi all
 
I was wondering if any of you got some statistics from V$EVENT_HISTOGRAM in a busy system.
 
I am interested in these statistics:
 
db file parallel read
db file parallel write
db file scattered read
db file sequential read
log file parallel write
log file sequential read
 
I have a Oracle E-Business Suite 11.5.10.2 running on HP-UX with 8 CPUs and 400 concurrent users (Active any time around 10 to 15) and EMC DMX Symmetrix SAN, the average time I am getting for
 
db file parallel read
db file parallel write
db file scattered read
db file sequential read
 
is around 16ms
 
for
 
log file parallel write
log file sequential read
 
I am getting around 50ms average, rather high but I would like have some comparisons before going to some conclusion!
 
As many statistics as possible ;-)
 
 
Thanks!
 
--
LSC
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