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

Last updated on OCTOBER 27, 2023

Applies to:

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


This document aims to provide basic information about OOM Killer.


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.


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In this Document
 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

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