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Linux: Out-of-Memory (OOM) Killer (Doc ID 452000.1)

Last updated on AUGUST 22, 2022

Applies to:

Oracle Cloud Infrastructure - Version N/A and later
Linux OS - Version Enterprise Linux 3.0 and later
Oracle Database - Enterprise Edition - Version 11.2.0.4 to 11.2.0.4 [Release 11.2]
Linux x86-64
Linux x86

Purpose

This document aims to provide basic information about OOM Killer.

Scope

This document covers OOM Killer basic knowledge, and explain the reason that lead to OOM error. It also provides some methods to avoid this error.

Details

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In this Document
Purpose
Scope
Details
 What is OOM Killer?
 Implementation of OOM Killer Based on 2.6 Kernel?
 What Causes OOM Killer Event?
 How to Avoid OOM Situation?
 Tuning OOM Killer
References

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