Linux kernel could not recognize whole RAM

(Doc ID 1448147.1)

Last updated on MAY 08, 2017

Applies to:

Linux OS - Version Oracle Linux 5.5 with Unbreakable Enterprise Kernel [2.6.32] and later
Information in this document applies to any platform.

Symptoms

Physical server running kernel-uek has 256GB RAM but only recognize 3.5GB after bootup.

System log shows:

Cause

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