Solved

Read Explain Plan table in Oracle

Posted on 2013-01-08
2
516 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
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 76

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

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

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

Cursors in Oracle: A cursor is used to process individual rows returned by database system for a query. In oracle every SQL statement executed by the oracle server has a private area. This area contains information about the SQL statement and the…
How to Unravel a Tricky Query Introduction If you browse through the Oracle zones or any of the other database-related zones you'll come across some complicated solutions and sometimes you'll just have to wonder how anyone came up with them.  …
This video shows setup options and the basic steps and syntax for duplicating (cloning) a database from one instance to another. Examples are given for duplicating to the same machine and to different machines
This video shows syntax for various backup options while discussing how the different basic backup types work.  It explains how to take full backups, incremental level 0 backups, incremental level 1 backups in both differential and cumulative mode a…

809 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