What is the Oozie Heap size recommendation for production?

[#1]

If a cluster needs to run 100 Oozie workflow concurrently, is there any formula to estimate oozie_heapsize?

Or is there any internal/external best practice document mentioning about heap size?

[#2]

Thanks! Does this mean Oozie's Tomcat heap size would not be important to run 100 concurrentworkflow?

[#3]

If I am in your shoes then I will be focusing on this thread