Database - RAC/Scalability (MOSC)

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Cluster Health Monitor (CHM): What is it? What does it do? Where can I get it?

edited Jan 4, 2016 2:06AM in Database - RAC/Scalability (MOSC) 7 commentsAnswered

The Cluster Health Monitor (CHM) collects OS statistics (system metrics) such as memory and swap space usage, processes, IO usage, and network related data. The Cluster Health Monitor collects information in real time and usually once a second. The Cluster Health Monitor collects OS statistics using OS API to gain performance and reduce the CPU usage overhead. The Cluster Health Monitor collects as much of system metrics and data as feasible that is restricted by the acceptable level of resource consumption by the tool.

If you're using RAC and you're not yet familiar with CHM, look to this FAQ document:

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