Payload
You will have to calculate the amount of memory required to process documents simultaneously (see question 3 in section
Questions on Sizing). Use the following equation to calculate your needs:
Payload consumption = (document size x memFactor + RFCSize) x number of parallel documents, where:
memFactor = 3 + the number of INVOKE statements in the adapter or notification service (if there are mappings between document formats and different XML dialects) + the SSL value. The SSL value = 0 or 1, according to whether documents are encrypted with SSL or not.
RFCSize = 28KB x number of IDocs in package, if the IDocs are either sent or received via RFC.
If you are in doubt about your assumptions for these values, you should run a few tests and watch by how much the memory actually increases during processing of one document.
Important:
By default, Integration Server starts with 128MB RAM. After you have calculated the memory that your Adapter for SAP should use, you have to modify the setting:
set JAVA_MAX_MEM=128M
in Integration Server_directory\instances\instance_name\bin\server.bat (or server.sh on UNIX) before starting the Integration Server.