This read-only integer reports the time, in seconds, of the last memory allocation failure caused by no more physical memory being available to the agent. An admin treats a recent or recurring value here as a sign the switch's management agent is running low on memory, potentially due to too many configured RMON entries or other resource exhaustion. For example, an admin who just enabled several new RMON alarms and then sees this timestamp update would suspect those new entries pushed the agent past its available memory.