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Troubleshooting Library Cache: Lock, Pin and Load Lock (Doc ID 444560.1)

Last updated on FEBRUARY 03, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 8.1.7.4 and later
Oracle Database - Personal Edition - Version 8.1.7.4 and later
Oracle Database - Standard Edition - Version 8.1.7.4 and later
Information in this document applies to any platform.

Purpose

This document provides brief information on Library cache lock, Library cache pin and Library cache load lock wait events.

Troubleshooting Steps

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In this Document
Purpose
Troubleshooting Steps
 What is "Library cache lock"?
 What is "Library cache pin"?
 Why are these two type of locks needed? 
 How can Library Cache Contention be reduced in General?
 How can Library cache lock be reduced?
 How can Library cache pin be reduced?
 What is Library cache load lock?
 How can Library cache load lock be reduced?
 How are library cache pins and library load lock related?
 Hints
 Known Issues:
References

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