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Home -> Community -> Mailing Lists -> Oracle-L -> RE: gathering history v$ to predict system change
Zhu - You can use STATSPACK to gather the statistics into its tables and
then query those tables directly. In the book ORACLE High-Performance Tuning
with STATSPACK, Don Burleson describes how to do this in detail and provides
many example queries. He advocates gathering STATSPACK statistics over a day
or week, then reviewing them to identify the times your system is performing
the most processing. Based on that, you can gather statistics for the peak
times with shorter time intervals.
Oracle 8i
http://search.barnesandnoble.com/booksearch/isbnInquiry.asp?userid=0E2CIPD0W
9&isbn=0072133783
Oracle9i
http://search.barnesandnoble.com/booksearch/isbnInquiry.asp?userid=0E2CIPD0W
9&isbn=007222360X
If you need more explanation, reply back.
Dennis Williams
DBA
Lifetouch, Inc.
dwilliams_at_lifetouch.com
-----Original Message-----
From: zhu chao [mailto:chaospku_at_163.net]
Sent: Tuesday, September 10, 2002 10:44 AM
To: Multiple recipients of list ORACLE-L
Subject: gathering history v$ to predict system change
hi, list friends:
We know statspack can gather history data and let you compare statistics from different time snapshot.But it is something difficult, for you must make multiple report and open them one by one and compare data between different reports.
Now i want to gather some information about the system ,put them in log file and draw pictures(using mrtg from log) about the statistics change,so that i can see which statistics is changing recent time and find problem before it became performance bottleneck or before it stuck the system.
In fact, the most useful data i want to get is like the content in the statspack, but i want to get them into one file from different time snapshot.The data i want to gather is like: wait event change trend,instance load profile change trend, the most cost sql change.Is it possible to get these data directly from some join of v$views? Or i can gather such valuable information from some v$view?
Please share your experience about performance monitoring and capacity planning:)
Regards
zhu chao
Eachnet DBA
86-21-32174588-667
chao_ping_at_vip.163.com
www.happyit.net
--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author: zhu chao
INET: chaospku_at_163.net
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