Important Information

This section contains the latest information that is not contained in the core product documentation. This section covers the following topics:

• Installation Notes

• Compatibility Issues

• Documentation Updates for Message Queue 4.1

Installation Notes

Refer to the Sun Java System Message Queue 4.1 Installation Guidefor information about pre-installation instructions, upgrade procedures, and all other information relevant to installing Message Queue, Platform Edition on the Solaris, Linux, and Windows platforms.

Refer to the Sun Java Enterprise System Installation Guide for information about pre-installation instructions and all other information relevant to installing Message Queue, Enterprise Edition on the Solaris, Linux, and HPUX platforms.

Refer to the Sun Java Enterprise System Upgrade and Migration Guide for information about upgrade and migration instructions relevant to upgrading to Message Queue Enterprise Edition on the Solaris, Linux, HPUX, and Windows platforms.

Compatibility Issues

This section covers compatibility issues in Message Queue 4.1.

Interface Stability

Sun Java System Message Queue uses many interfaces that may change over time. Appendix B, Stability of Message Queue Interfaces, in Sun Java System Message Queue 4.1 Administration Guide classifies the interfaces according to their stability. The more stable an interface, the less likely it is to change in subsequent versions of the product.

Issues Related to the Next Major Release of Message Queue

The next major release of Message Queue may introduce changes that make your clients incompatible with that release. This information is provided now to allow you to prepare for these changes.

• The locations of individual files installed as part of Sun Java System Message Queue might change. This could break existing applications that depend on the current location of certain Message Queue files.

• 3.5 and earlier brokers may no longer be able to operate in a cluster with newer brokers.

• In future releases, Message Queue clients may not be able to use JDK versions that are earlier than 1.5.

Documentation Updates for Message Queue 4.1

Other than this Release Notes document, Message Queue 4.1 includes only one new document: Sun Java System Message Queue 4.1 Developer’s Guide for JMX Clients. This document was introduced with the 4.0 release of Message Queue. In the 4.1 version, conceptual information has been added that introduces the JMX model.

The Message Queue documentation that was published for Message Queue 3.6 SP3, 2005Q4, is up to date with respect to the needs of Application Server 9 PE clients. This documentation set is available at the following location.

http://docs.sun.com/app/docs/coll/1307.1

Installation and Upgrade Information

The Sun Java System Message Queue 4.1 Installation Guide was updated to reflect platform-specific information. This document now contains installation and upgrade information relevant to Message Queue 4.1.

Administration Guide

The Administration Guide was updated to provide information about high availability clusters, JAAS support, and JMX support.

Developer's Guide for Java Clients

TheDeveloper’s Guide for Java Clients was updated to reflect the addition of client runtime logging support and of connection event notifications.

Developer’s Guide for C Clients

TheDeveloper’s Guide for C Clients was updated to reflect the addition of the MQGetDestinationName function, of the MQ_Message message type, and of fixed ports.