Solved

Read Explain Plan table in Oracle

Posted on 2013-01-08
2
519 Views
Last Modified: 2013-01-12
How to analyze  explain plan table for sql tuning ? I am not clear idea about it. Please let me know.
0
Comment
Question by:snoor07
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 22

Accepted Solution

by:
Steve Wales earned 250 total points
ID: 38756324
There's a lengthy article here that talks about a lot of what you'll see:
http://www.akadia.com/services/ora_interpreting_explain_plan.html

You can use DBMS_XPLAN to pretty up the output of the PLAN_TABLE (which helps make it easier to understand):
http://www.oracle-base.com/articles/9i/dbms_xplan.php

They would be two places to start reading to get an overview of what you're seeing, to start with.
0
 
LVL 77

Assisted Solution

by:slightwv (䄆 Netminder)
slightwv (䄆 Netminder) earned 250 total points
ID: 38756326
I suggest you start with the online docs:
http://docs.oracle.com/cd/E11882_01/server.112/e16638/ex_plan.htm#PFGRF009

If you have specific questions after reviewing the docs, just ask.
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Working with Network Access Control Lists in Oracle 11g (part 1) Part 2: http://www.e-e.com/A_9074.html So, you upgraded to a shiny new 11g database and all of a sudden every program that used UTL_MAIL, UTL_SMTP, UTL_TCP, UTL_HTTP or any oth…
Background In several of the companies I have worked for, I noticed that corporate reporting is off loaded from the production database and done mainly on a clone database which needs to be kept up to date daily by various means, be it a logical…
This video shows how to recover a database from a user managed backup
Via a live example, show how to restore a database from backup after a simulated disk failure using RMAN.

688 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question