HP-UX 11i Java™ JDK/JRE Version 6.0.22 Release Notes

For information about the PA add-on bundle required to run C++ applications compiled

with -AA, see “PA-RISC add-on package” (page 12).

Usage documentation

See the HP-UX Programmer's Guide for Java 2 under “User guide” at http://

www.hp.com/go/hpux-java-docs for usage documentation for developers. There you

will find information on HotSpot options, HP-specific options and features, suggestions

and examples for allocating memory, how to use WDB to examine backtraces in Java

threads, code examples for using Java Native Interface, and more. You might find the

JDK/JRE 6.0.n Usage Notes appendix especially useful.

X/Open Socket Support for Itanium

Starting in JDK/JRE 6.0.18, support for X/Open sockets has been added only for Itanium.

This corrects the behavior of the java.net.Socket.setSoLinger() method. Java

native methods outside the JDK that call socket functions are not affected.

To enable this support, use the option:

-XX:+UseXOpenSockets

You must also have the following X/motif patch installed on your system:

• PHSS_43341 (11.23)

• PHSS_43291 (11.31)

Handling large GC log files

In JDK/JRE 6.0.16 new Oracle command line options were introduced to support GC

log file rotation. These options are

-XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=<num_of_files>

-XX:GCLogFileSize=<logsize>

Prior to JDK/JRE 6.0.17, this option could be used with -Xloggc, but was not supported

with -Xverbosegc. Starting in JDK/JRE 6.0.17, this option is also supported with

-Xverbosegc.

HP's GC log rotation option, -XX:GCLogLimits, introduced in JDK/JRE 6.0.05,

remains unchanged and is still supported with both-Xloggc and –Xverbosegc.

Change in loading of .hotspot_compiler and .hotspotrc files

Starting in JDK/JRE 6.0.15, the default implicit loading of the .hotspot_compiler

and .hotspotrc file from the current working directory has changed. These files are

no longer loaded by default. For existing deployments that rely on .hotspot_compiler

(for example, to exclude a method from hotspot compilation), and .hotspotrc, an