DB Optimizer: calculating the SQL_ID hash from the SQL

Wednesday, March 31, 2010

This really cool:

http://www.slaviks-blog.com/2010/03/30/oracle-sql_id-and-hash-value/

he explains a how to calculate the sql_id from the SQL_TEXT. The SQL_ID is just a hash of the text.

(saw on Tanels blog at http://blog.tanelpoder.com/2010/03/31/calculate-sql_id-and-sql_hash_value-from-sql-text/ ) calculating

Kyle Hailey

I'm Kyle Hailey and I'm the designer and product manager behind Embarcadero's

DB Optimzer

Before working at Embarcadero I redesigned the performance pages in Oracles OEM 10g (see a before and after example). I am on the patent from the team for our tuning methodology (Patents: 20060059205) . I freely provide graphical monitoring tools such as ASHMON (TCL/TK) as well as scripts to profile database load such as S-ASH ie Simulated ASH (PLSQL). S-ASH, ASHMON and more are available at my old site http://ashmasters.com/ . I have made available C code to directly read profiling data out of Oracle's memory structures, called Direct Memory Access. I speak at conferences and give classes around the world.This blog has some of my new ideas on Visual SQL Tuning (VST), work on DB Optimizer, possibly some past material on DB performance monitoring as well as lots of references and pointers to other information on the web that I find important and worth emphasizing.

DB Optimizer

Wednesday, March 31, 2010

calculating the SQL_ID hash from the SQL_TEXT

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