Migrating Java Applications to HP-UX

Introduction

HP offers a full range of Java technology products on HP-UX 11i systems. We provide solutions to

develop or deploy Java applications with the best performance on HP PA-RISC 11i v1(11.11), 11i v2

(11.23), 11i v3 (11.31), and HP Itanium 11i v2 (11.23) and 11iv3 (11.31).

This document provides guidance on how to easily migrate your existing java applications from other

platforms to HP-UX. The topics covered are:

• Essential Tools on HP-UX for Java Applications

• Configuring Patches and Kernel Parameters for Java on HP-UX

• Key Factors Affecting Performance

• Memory Footprint of Migrated Java Applications

Essential Tools on HP-UX for Java Applications

HP-UX provides a variety of tools to assist you in deploying Java applications on HP-UX. These tools

help with initial machine setup with patches and kernel parameters, monitoring performance of your

application, and troubleshooting problems that arise.

We recommend starting with these three tools:

HPjconfig (or JavaOOB)

HPjmeter

HP glance/gpm

The following provides a brief description of these essential HP-UX tools and some of the features you

are likely to use.

HPjconfig

HPjconfig is a tool used in configuring and tuning HP-UX 11i systems for running Java workloads. It

provides recommended kernel parameter settings and patch information needed for running Java on

HP-UX.

HPjconfig is a pure Java application. To run, it requires the following:

Java 1.4.2.x or later

HP-UX 11i v1 or later

HP Integrity Itanium or HP 9000 PA-RISC system

To download HPjconfig, go to:

https://h20392.www2.hp.com/portal/swdepot/displayProductInfo.do?productNumber=HPJCONFIG

Refer to the HPjconfig release notes at:

http://www.hp.com/go/hpux-java-docs