Oracle Linux: How To Manually Capture Vmcore Dump When Linux OS Hangs On Baremetal Hosts And Virtual Machines (VMware Guest /Oracle VM)
(Doc ID 2091397.1)
Last updated on OCTOBER 12, 2022
Applies to:Linux OS - Version Oracle Linux 5.2 and later
Oracle Cloud Infrastructure - Version N/A and later
Oracle Exalogic Elastic Cloud X2-2 Hardware - Version X6 and later
Generating vmcore from a hung machine.
To view full details, sign in with your My Oracle Support account.
Don't have a My Oracle Support account? Click to get started!
In this Document
|1. Configure kdump and make sure the core is generated by issuing "echo c > /proc/sysrq-trigger" .|
A working config will dump the vmcore in the mentioned location.
|2. Edit the file /etc/sysctl.conf and add the below lines to enable panic on different scenarios.|
|3. Trigger the crash.|