alerts about EM Overall Capacity

Document ID : KB000110539
Last Modified Date : 10/08/2018
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Issue:
We are getting alerts about EM Overall Capacity (%)
The "EM Overall Capacity (%) - Caution" is set at 75& and  "EM Overall Capacity (%) -  Danger" is set at 90%.
How can we avoid unnecessary alerts?
Resolution:
The Alert came with "Supportability.jar" Manage Module which could have threshold based on the old GC settings (CMS parallel GC and GC kickoff at 50%). We are now changing the default GC algorithm to G1GC for newer JVM versions and also bigger heap size. For the Alert definition, it is hard to configure a proper threshold for every environment -- each one might have different configurations. Based on this information, it would be better to make additional adjustments to threshold, so that we do not get unnecessary alerts.