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Oracle Linux: How to Configure "kdump" on Oracle Linux 7 (Doc ID 2049919.1)

Last updated on MARCH 04, 2024

Applies to:

Linux OS - Version Oracle Linux 7.0 to Oracle Linux 7.9 [Release OL7 to OL7U9]
Oracle Cloud Infrastructure - Version N/A and later
Linux x86-64


Kdump is an advanced crash dumping mechanism. When enabled, the system is booted from the context of another kernel. This second kernel reserves a small amount of memory, and its only purpose is to capture the core dump image in case the system crashes. Since being able to analyze the core dump helps significantly to determine the exact cause of the system failure, it is strongly recommended to have this feature enabled. 

This Note explains how to configure, test, and use the kdump service in Oracle Linux (OL) 7.


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In this Document
 Install the kexec-tools package if not already installed
 Configuring kdump
 Start  kdump daemon
 kdump configuration file - /etc/sysconfig/kdump
 Testing  kdump

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