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In Exalogic X6-2 with 768 GB memory, Oct 2018 PSU overwrites 'dom0_mem' value (Doc ID 2530837.1)

Last updated on JULY 22, 2022

Applies to:

Oracle Exalogic Elastic Cloud Software - Version 2.0.6.3.181016 to 2.0.6.3.181016
Exalogic Elastic Cloud X6-2 Hardware - Version X6 to X6 [Release X6]
Information in this document applies to any platform.

Symptoms

In X6-2 rack with 768 GB memory or higher, when upgrading to Oct 2018 PSU, the patching is changing GRUB configuration and not reflecting total memory installed.

As per our memory recommendations (Doc ID 1582091.1),

  For X5-2 and X6-2 (with 768 GB of memory):
  kernel /xen.gz dom0_mem=18432M
  kernel /xen.gz console=com1,vga com1=9600,8n1 dom0_mem=18432M


After applying the Oct 2018 PSU, the grub.conf entry 'dom0_mem' is assigned a value of '12800M', instead of '18432M'.

Changes

 Apply Oct 2018 PSU in X6-2 rack with 768 GB of memory

Cause

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