EPPlus Large Dataset Issue with Out of Memory Exception

Question

System Out of Memory Exception. I see the memory Stream is only flushed when saved. We have 1.5 - 2GB Datasets.

I am using EPPlus Version 3.1.3.0

We do the following in code.

We loop through

     --> Create a Package
        --> each table in the datareader
            -->   Add WorkSheet to the Package 
        --> Dispose Each table.
     --> Save the  Package.

Each Datatable is of a 300Mg Size up to 15 Tables out form the System.

This is causing a issue, I have logged this in detail @ https://epplus.codeplex.com/workitem/15085

I still want to be able to use EPPlus its very nice API. but is there a better way to free up a worksheet once we add it to the package.

Thank you for helping.

Answer 1

I had this problem, but I fixed it by switching the option of "Platform target", from x86 to x64 or "Any CPU". ( right click on the project, then select "Properties", then the tab "Build", then on "Platform target" select "x64" )

The problem is that for platform x86 you can use only about 1.8 GB of RAM. For platform x64, you do not have this limitation.