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Troubleshooting Database Contention With V$Wait_Chains (Doc ID 1428210.1)

Last updated on OCTOBER 30, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 11.1.0.6 to 12.1.0.2 [Release 11.1 to 12.1]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.

Purpose

The purpose of this document is to provide a fast and easy way to troubleshoot database contention and hangs via SQL in version 11g  with v$wait_chains.

Troubleshooting Steps

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In this Document
Purpose
Troubleshooting Steps
 Introduction
 Basic Information
 Additional Information (formatted) - Top 100 wait chain processes
 Final Blocking Session in 11.2
 Example of Output of Query 1 using Oracle Enterprise Manager
References

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