My Oracle Support Banner

Simple Tuning Example Using 10046 and explain plans (Doc ID 386360.1)

Last updated on OCTOBER 30, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 6.0.0.0 to 11.1.0.7 [Release 6.0 to 11.1]
Oracle Database - Personal Edition - Version 7.1.4.0 and later
Oracle Database - Standard Edition - Version 7.0.16.0 and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Information in this document applies to any platform.
***Checked for relevance on 04-Nov-2010***

ALL PRODUCT ACCESS - Version: 8.1.7.4 to 11.1.0.7



Purpose

To enable the reader to begin the tuning process on poor performing queries and enable them to 
understand how plans and 10046 can be used for this purpose. The article assumes the problem SQL
can be run using sqlplus and uses a simple testcase to demonstrate.

Scope

DBAs, Developers and Support personnel

Details

To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!


In this Document
Purpose
Scope
Details
 Scenario
 Test Environment
 Gathering 10046 trace
 Getting the explain plan
 DIAGNOSIS
 What Happened ?
 How can this be Resolved?
References

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.