J2EE engine shuts down and restarts....

Hi,

I am doing a scenrio using BPM with multiple parallel process. I am using a inbound file adapter for the incoming message to feed the BPM process. I have set 500 messages/per recordset.The process is stable when the message size is small but when the message size increases may be to 2MB,the J2EE engine collapses and restarts a certain period of time.

When I look at the incoming messages they seem to have failed at the BPM process. I am not sure what is causing the J2EE engine to collapse and restart...It works fine with less than 1MB incoming messages....Does it mean XI cannot support messages greater than 1MB? I know its absurd but this is very interesting..Checking the SMICM, I find the processes are all normal...

-Teresa