Hi Harry,
It's not possible to define the maximum size of the file itself, but it is possible to define the maximum size of the request that'll be accepted by the dispatcher.
"To protect your system from malicious denial-of-service attacks, you can set a limit on the request body length that can be accepted by the HTTP Provider Service on the Java dispatcher."
(quote from <a href="http://help.sap.com/saphelp_nw04/helpdata/en/start.htm">SAP NetWeaver Library</a> / Application Platform / Java Technology in SAP Web Application Server / Administration Manual / Server Administration / J2EE Engine Administration / Web Container / HTTP Provider Service / Limiting the Length of the Request Body)
The documentation mentions the default value is 128MB, but on my SP15 Sneak Preview it was 1GB.
This is defined at dispatcher level. As far as I know it cannot be limited more strictly at the level of the Web Dynpro FileUpload component instance itself. I also couldn't find a way to define a certain threshold size as of which the uploaded file is directly written to disk instead of being loaded in memory.
Kind regards,
/Sigiswald
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