December 2006
Intermediate to advanced
166 pages
3h 59m
English
book
Java Stand-alone Applications on z/OS Volume II
by Alex Louwe Kooijmans, Jonathan M Barney, Patrick Bruinsma, Venugopal Kailaikurthi, Christian Strauer, Kenichi Yoshimura
Content preview from Java Stand-alone Applications on z/OS Volume II
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136 Java Stand-alone Applications on z/OS Volume II
4. Java classes and objects in the heap.
For more details about DTFJ, refer to Chapter 37 of IBM Developer Kit and
Runtime Environment, Java 2 Technlogy Edition, Version 5.0 Diagnostics Guide,
SC34-6650:
http://download.boulder.ibm.com/ibmdl/pub/software/dw/jdk/diagnosis/
diag50.pdf
8.3 Guidelines - using Java and tuning options
In the following sections we provide guidelines for using Java and we explain
tuning options.
8.3.1 Guidelines for using 31-bit versus 64-bit Java
The guidelines to consider when using 31-bit or 64-bit Java are as follows:
1. If an application requires a Java heap larger than the maximum provided by
31-bit Java, or if the application must communicate with a 64-bit
process/database ...
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