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OCI : How to Manually Generate a Memory Dump/Crashdump of an Unresponsive/Hung OCI instance

edited Aug 31, 2022 3:11PM in Linux

Applies to:

Oracle Cloud Infrastructure

Linux x86-64

Oracle Linux Cloud Service


Goal

How to generate a memory dump/Crashdump of an unresponsive/hung OCI instance

A diagnostic interrupt can be sent to troubleshoot an unresponsive or unreachable compute virtual machine (VM) instance.

A diagnostic interrupt causes the instance's OS to crash and reboot. Before sending a diagnostic interrupt, must configure the OS to generate a crash dump (also called a memory dump file) when it crashes.

The crash dump captures information about the state of the OS at the time of the crash. After the OS restarts, Please create an SR with Oracle support and upload the vmcore file for analysis.

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