Difference between javacore, thread dump and heap dump in Websphere

Question

Can someone tell me the exact difference between javacore, thread dump and heap dump? Under which situation each of these are used??

Answer 1

Heap dumps anytime you wish to see what is being held in memory Out-of-memory errors Heap dumps - picture of in memory objects - used for memory analysis Java cores - also known as thread dumps or java dumps, used for viewing the thread activity inside the JVM at a given time. IBM javacores should a lot of additional information besides just the threads and stacks -- used to determine hangs, deadlocks, and reasons for performance degredation System cores