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Exalytics Server Will Not Boot Up: Gets Stuck During Boot Sequence or Fails to Load Grub (Doc ID 1961318.1)

Last updated on SEPTEMBER 10, 2021

Applies to:

Exalytics In-Memory Machine X3-4 - Version All Versions and later
Oracle Exalytics Software - Version and later
Information in this document applies to any platform.


An Exalytics server was restarted after planned reboot.  System will now not boot up. The Service Processor (SP) light comes on but then the [OK] light flashes and a console window cannot be rendered.  When the machine boots it may start the boot sequence and get stuck at "loading grub" or run through a boot sequence like:

It may then get stuck at the "Checking NVRAM..." and then starts the boot process all over again without ever successfully rebooting.

In these cases, no keyboard, or user input option is available and the machine never fully boots.

This problem may occur on Exalytics bare metal or Exalytics Oracle Virtual Machine (OVM) servers.


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