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

Last updated on APRIL 02, 2022

Applies to:

Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Cloud Service - Version N/A and later
Information in this document applies to any platform.

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

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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

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