Comments on: SQL Plan Baselines http://jonathanlewis.wordpress.com/2011/01/07/sql-plan-baselines/ Just another Oracle weblog Wed, 22 May 2013 12:40:08 +0000 hourly 1 http://wordpress.com/ By: Outline, SQL profile and SQL Plan Management(SPM) « Oracle Explorer: Standing on the shoulders of giants http://jonathanlewis.wordpress.com/2011/01/07/sql-plan-baselines/#comment-41048 Fri, 22 Jul 2011 06:00:21 +0000 http://jonathanlewis.wordpress.com/?p=5347#comment-41048 [...] http://kerryosborne.oracle-guy.com/2009/04/oracle-11g-sql-plan-management-sql-plan-baselines/ http://jonathanlewis.wordpress.com/2011/01/07/sql-plan-baselines/ GA_googleAddAttr("AdOpt", "1"); GA_googleAddAttr("Origin", "other"); GA_googleAddAttr("theme_bg", [...]

]]> By: Pavol Babel http://jonathanlewis.wordpress.com/2011/01/07/sql-plan-baselines/#comment-39102 Sat, 08 Jan 2011 23:32:37 +0000 http://jonathanlewis.wordpress.com/?p=5347#comment-39102 Interestingly, Kerry didn’t understand quite a long time that SQL Profiles are not supposed to freeze execution plans. Most of DBA Instructors at Oracle University would learn you this basic fact, probably thanks to execlent Joan-Fransois Verrier, who was preraing most of materials for courses.
I can rember situation, when a SQL statement with subobtiomal exectuiion plan was tuned by SQL TUNING ADVISOR (STA) and an underlying SQL profile was created. As data growed and distributaion of them changed, the same SQL statement had became unefficient, STA had benn ran again, finding different (better again) SQL Profile.

SQL Baselines one of the best features in Oracle database introduced for last 10 years. I do not like automatic evolving and automatic tuning,, but I am now finally able to change execuition plans without changing source code of an application in supported way. Excellent for black box application tuning! I was not very keen on hacking Outlines and SQL profiles, to be honest..

]]> By: Tweets that mention SQL Plan Baselines « Oracle Scratchpad -- Topsy.com http://jonathanlewis.wordpress.com/2011/01/07/sql-plan-baselines/#comment-39095 Sat, 08 Jan 2011 15:45:05 +0000 http://jonathanlewis.wordpress.com/?p=5347#comment-39095 [...] This post was mentioned on Twitter by jarneil, Surachart Opun. Surachart Opun said: SQL Plan Baselines: http://t.co/bEui5K3 [...]

]]> By: Jonathan Lewis http://jonathanlewis.wordpress.com/2011/01/07/sql-plan-baselines/#comment-39090 Sat, 08 Jan 2011 10:27:23 +0000 http://jonathanlewis.wordpress.com/?p=5347#comment-39090 Bryan,

Thanks for that – I’ve added the link (and the follow-up link).

]]> By: bryan grenn http://jonathanlewis.wordpress.com/2011/01/07/sql-plan-baselines/#comment-39088 Sat, 08 Jan 2011 01:48:13 +0000 http://jonathanlewis.wordpress.com/?p=5347#comment-39088 Kerry just had a new post on dynamic sampling with baselines and profiles.

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