ColdFusion Limits – Coldfusion.util.MemorySemaphor

August 2, 2018

In the course of uploading large files to a ColdFusion server you may encounter this error:

coldfusion.util.MemorySemaphore$MemoryUnavailableException:Memory required (XXXXXXXXX bytes) exceeds the maximum allowed memory.

The solutions I was able to find; suggest only increasing the “Maximum Size of Post Data” setting within the ColdFusion Administrator. However, you also need to increase the “Request Throttle Memory” settings. The limits must be greater than the size of the file being uploaded.


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An information technology professional with twenty four years experience in systems administration, computer programming, requirements gathering, customer service, and technical support.