Is there a memory limit for a single .NET process

.net memory .net-3.5 process limit
Mats picture Mats · Oct 14, 2008 · Viewed 61.6k times · Source

We are currently thinking of building a cache-system to hold data pulled out of an SQL database and make it available to a couple of other applications (website, webservice, etc). We imagine the cache to be running as a windows service and basically consist of a smart dictionary which holds the cache entries. My question is, is there a limit to the working set of the application (it will be running under windows server 2003)? Or is the amount of physical memory the limit?

Answer

Chris S picture Chris S · Oct 14, 2008

32bit or 64bit? 32bit is 2gb (for a process), 64 bit is 1TB (enterprise edition 2003 server).

However, the maximum size of a CLR Object is 2gb even on 64bit.

Update: the information above was correct in 2008. See Ohad's answer for more recent information. Windows 2016 server can have a maximum of 24TB.

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