Craig Shallahamer's Blog
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You were brought to this page based on an internet search
and as a free service to Oracle DBAs.
The text below is an except from the book,
Oracle Performance Firefighting, written by
Craig Shallahamer of
OraPub, Inc.
Figures and tables are not included on this page, only their reference.
To order the book in either print or PDF form, click
here.
©2009, 2010 by Craig Shallahamer. This is copyrighted material.
Please—Out of respect for those involved in the creation of the book and also for
their familes, we ask you to respect the copyright both in intent and deed. Thank you.
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<p>Most of us would guess at just how familiar the person asking the question is with IT, and more specifically with Oracle systems, and then make our first shot at explaining what we do. I usually start at a high level with something like, "I work with computers." If the person seems interested, I slowly work my way into more detail until I can tell I've reached his technical limit or he simply doesn't care to know more.
p><p>My point is that to effectively communicate technical topics, we must understand our audience and our objectives. And all this must occur without misleading or being condescending.
p><p>From Chapter 1's description of ORTA, you know that response time is the sum of service time and queue time. From the previous discussion of the wait event views, you know that through Oracle's wait interface, you can collect very detailed queue time information. Oracle also allows service time collection with some level of breakdown. We can combine our objectives to simplify and to effectively communicate response time by categorizing the detailed time components.
p>
©2009, 2010 by Craig Shallahamer. This is copyrighted material.
Please—Out of respect for those involved in the creation of the book and also for
their familes, we ask you to respect the copyright both in intent and deed. Thank you.
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