RE: WAITS

Check out the "statspack viewer" tool at http://www.geocities.com/alexdabr/

                                                                                                                    
                    mkb                                                                                             
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                    .com>                cc:                                                                        
                    Sent by:             Subject:     RE: WAITS                                                     
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                    May 13, 2002                                                                                    
                    10:03 AM                                                                                        
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That's neat. I working on HTML/GUI interface to statspack. I think I've got most of the thing figured out. Right now, I'm able to display phys read/write IO directly from one of the statspack tables every hour displayed in graphincal format on a web page. Working on other reports as well.

Would love to be able to pool resources here and bounce off some ideas.

mkb

• "Orr, Steve" <sorr_at_rightnow.com> wrote:
  > > Each morning I produce graphs...
  > I think this is key. Having historical data
  > graphically presented helps to
  > establish the norm and when there may be performance
  > issues to investigate.
  > This follows step 2 of Gaja's "Oracle Performance
  > Tuning 101 Methodology"
  > which says, "Measure and document current
  > performance."
  >
  > To do this I created a DBA monitoring HTML display
  > tool which gets data from
  > V$SYSSTAT and V$SYSTEM_EVENT once a minute, stores
  > it in a round robin
  > database and displays it with RRDTool. I've
  > accumulated 2 months of this
  > data and it's amazing how lightweight it is. With
  > graphs it's easy to see
  > when something's amiss. We capture expensive SQL via
  > StatsPack every 15
  > minutes and I have correlated a spike on a graph to
  > specific SQL executed 2
  > hours earlier.
  >
  > Now I'm trying to decide on my next enhancement: 1)
  > HTML/GUI interface to
  > StatsPack data or; 2) Drill down to V$SESSION_WAIT
  > ???
  >
  >
  > Steve Orr
  > Bozeman, Montana
  >
  >
  >
  > -----Original Message-----
  > Sent: Thursday, May 09, 2002 5:23 PM
  > To: Multiple recipients of list ORACLE-L
  > Importance: High
  >
  > In general There are two problems in using the "top
  > five waits" out of
  > statspack: it reports idle waits; no matter how
  > well-tuned your database
  > there will always be a top five. The numbers
  > presented show total
  > time-waited in csecs for the time period. As Jared
  > said we don't know the
  > time period. We don't know the average wait time.
  >
  > I have learned some rudimentary gnuplot skills.
  > Each morning I produce
  > graphs of what went on the in the databases the
  > previous day on and hour by
  > hour basis. If something is really askew I break
  > the hour down into ten
  > minute blocks. This helps me to better recognize
  > patterns of database
  > usage.
  >
  > Ian MacGregor
  > Stanford Linear Accelerator Center
  > ian_at_slac.stanford.edu
  > --
  > Please see the official ORACLE-L FAQ:
  > http://www.orafaq.com
  > --
  > Author: Orr, Steve
  > INET: sorr_at_rightnow.com
  

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
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Author: 
  INET: Rajesh.Rao_at_jpmchase.com

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