Max Instance Size?

Question

Hey all,
Does anyone know where/how you set the max process instance size? I created a BPM Object with a string attribute. I then created a quick presentation so that I could cut and past an xml document into the text area and submit the form. When I submit the form, I get the following error:
Caused by: Process execution engine execution error.
Caused by: Max instance size exceeded.
Current size is 23461, whereas the maximum size is 16384.
My code seems to work fine with a smaller xml document. Any ideas would be much appreciated.
Thanks,
Graham

Answer 1

Hi Graham,
In Studio you can change the max instance size by going to the Project Navigator tab -> right mouse clicking the project -> click "Engine Preferences" -> with the "Engine" catagory selected in the upper left corner click the "Advanced" tab in the upper middle portion of the dialog -> change the value in the "Maximum Instance Size" field.
There's a similar setting on Enterprise you'll need to change before you start deploying the project to this.
You'll get a warning message if you've made it too big ("The amount of memory used to store instance in memory (instance max size * cache size) should be less than half the maximum JVM Heap Size). If you see this error, pull out your calculator and click on the "Details" tab (to the right of the "Advanced" tab you just clicked"). Note the "Maximum JVM Heap Size" (typically 256mb). As an example, if you change the instance size in the "Advanced" tab from 16kb to 32kb, you might want to change the "Instances Cache" setting from 5000 to 2500.
Hope this helps,
Dan