Oracle Training Oracle Support Development Oracle Apps

 E-mail Us
 Oracle Articles
New Oracle Articles

 Oracle Training
 Oracle Tips

 Oracle Forum
 Class Catalog

 Remote DBA
 Oracle Tuning
 Emergency 911
 RAC Support
 Apps Support
 Oracle Support

 SQL Tuning

 Oracle UNIX
 Oracle Linux
 Remote s
 Remote plans
 Application Server

 Oracle Forms
 Oracle Portal
 App Upgrades
 SQL Server
 Oracle Concepts
 Software Support

 Remote S


 Consulting Staff
 Consulting Prices
 Help Wanted!


 Oracle Posters
 Oracle Books

 Oracle Scripts

Don Burleson Blog 








Millsap offers Laredo Oracle predictive tool

January 5, 2006

Cary Millsap, author of the bestselling book "Optimizing Oracle Performance" has developed a new product dubbed "Laredo".  Laredo claims to assist with Oracle predictive analysis and predict the changes from changing initialization parameters (i.e. optimizer_index_cost_adj) and predicting the impact of adding or deleting a new index.  Laredo also has a trend analysis tool for time-series analysis.


Laredo, an innovative solution for predicting the performance impact of any changes introduced into your production Oracle environment . . .

The P5 Performance Console is to become an integrated solution allowing performance analysts to extend their reach from analytics into predictive analysis, capacity planning, and service level management.

Future products to be integrated into the P5 Performance Console include:

·         Profiler

·         Skew Analyzer

·         SQL Optimization Suite

·         Application Workload Characterization System

·         Trend Analyzer

·         Predictive Analyzer

Cary Millsap notes that Laredo is useful for a variety of DBA functions and helps remove the guesswork from global Oracle tuning activities:

Laredo is an execution plan manager. It collects text and context information about all SQL running on a system, and it stores those statements in a database. The scenario creator produces execution plans for a collection of SQL and stores them. A common workflow through Laredo for a given collection of SQL statements (that is, application) is this:

  1. Create a baseline scenario (list of plans; one plan for each SQL statement on the system).
  2. On a test system, make the proposed change. (For example, collect statistics, create/drop the index, change the instance parameter, etc.)
  3. On the test system, create a new scenario (new list of plans).
  4. Use the Laredo difference reporter to report on which statements have different plans.

Typical uses include:

-          Application with 40,000 SQL statements. How many of these statements will be affected if I drop this index? Answer: “You only need to test these 27.” Or maybe, “You’ll need to test 8,419.”

-          How many plans will change if I change the value of db_file_multiblock_read_count? “These 2,154.” Or maybe just, “these 4.”

-          How many plans will change if I collect schema statistics right now? “Only these 7.” Or maybe, “27,419 of them.”



Oracle Training at Sea
oracle dba poster

Follow us on Twitter 
Oracle performance tuning software 
Oracle Linux poster


Burleson is the American Team

Note: This Oracle documentation was created as a support and Oracle training reference for use by our DBA performance tuning consulting professionals.  Feel free to ask questions on our Oracle forum.

Verify experience! Anyone considering using the services of an Oracle support expert should independently investigate their credentials and experience, and not rely on advertisements and self-proclaimed expertise. All legitimate Oracle experts publish their Oracle qualifications.

Errata?  Oracle technology is changing and we strive to update our BC Oracle support information.  If you find an error or have a suggestion for improving our content, we would appreciate your feedback.  Just  e-mail:  

and include the URL for the page.


Burleson Consulting

The Oracle of Database Support

Oracle Performance Tuning

Remote DBA Services


Copyright © 1996 -  2017

All rights reserved by Burleson

Oracle ® is the registered trademark of Oracle Corporation.

Remote Emergency Support provided by Conversational