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Resolving Issues Where 'enq: UL - contention' Waits are Occurring (Doc ID 1915980.1)

Last updated on NOVEMBER 04, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 9.2.0.1 and later
Oracle Database - Personal Edition - Version 9.2.0.1 and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Information in this document applies to any platform.

Purpose

Disclaimer: This note is written in the context that the Performance Guided Resolution tool was used and recommended this article. It may not make as much sense if read standalone or by other audiences.

Troubleshooting Steps

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In this Document
Purpose
Troubleshooting Steps
 Brief Definition:
 Problem Confirmation:
 Troubleshooting 'enq: UL - contention'  waits
 Potential Causes:
 Measuring Success
 Known Issues
References

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