The Java Virtual Machine (JVM) heap is an independent memory allocation that can reduce the capacity of the main memory heap.
Every execution group creates its own Java Virtual Machine (JVM). The execution group then uses the JVM to execute the internal administration threads that require Java. This usage can be minimal. The primary use of the JVM is for IBM primitive nodes that make use of Java functionality. These primitives include:
From V5 onwards, the JVM is created with a minimum of 128MB of space allocated and reserved for its use. As with any JVM, parameters can be passed in to set the minimum and maximum heap sizes.
To give more capacity to a message flow that is going to process large messages, reduce the minimum JVM heap size to allow the main memory heap to occupy more address space.
Notices |
Trademarks |
Downloads |
Library |
Support |
Feedback
![]() ![]() |
ac55030_ |