Скачать или смотреть NYOUG Webinar: “Tune that SQL” now what do I do?

Tuning SQL statements in Oracle is more of an art than a science. In this session we will cover the basic tools and steps to tuning a SQL statement. Starting with finding the SQL statement and collecting the right information. How does the Optimizer work to transform SQL into an execution plan? What information is an execution plan is trying to show? Finally, what are some of the things that can be tuned as well as tools Oracle has provided to make things easier. If you are new to tuning SQL in Oracle or trying to freshen up your skills, this session should have enough information for everyone.


Finding SQL statement
Top SQL by?
what information about a SQL to collect


The Oracle Optimizer
steps
explain plan - execution plan
bind peaking
soft parse vs hard parse


Details in explain plan
basic plan
collected statistics
estimate vs actual


What to tune?
change the code
change the statistics
change the way Oracle works


Tools to help
SPM
Profiles
Patches
SQL Tuning Advisor


Q&A


Presented by Gary Gordhamer, Managing Principal Consultant, Viscosity North America


Co-Hosted by the New York Oracle Users group (http://nyoug.org/) and Viscosity North America.