What's changed in IBM MQ 9.2.0 Long Term Support

The Long Term Support (LTS) release is a recommended product level for which support, including defect and security updates, is provided over a specified period of time.

LTS releases do not deliver new functional enhancements. They contain only defect fixes and security updates, and are made available at regular intervals. They are intended for systems that demand maximum stability over a long term deployment period.

For more information see IBM® MQ release types and IBM MQ FAQ for Long Term Support and Continuous Delivery releases.

Note: From 1Q 2023, for Multiplatforms, there are two types of maintenance:

Fix packs, which contain roll-ups of all defects fixed since the previous fix pack delivery (or GA). Fix packs are produced exclusively for Long Term Support (LTS) releases during their normal support lifecycle.
Cumulative security updates (CSUs), which are smaller updates and contain security patches released since the previous maintenance (GA). CSUs are produced for LTS releases (including releases in extended support), and also for the latest IBM MQ Continuous Delivery (CD) release, as required to deliver relevant security patches.

For maintenance releases in or after 1Q 2023, the fourth digit in the VRMF represents either a fix pack number or a CSU number. Both types of maintenance are mutually cumulative (that is, they contain everything included in older CSUs and fix packs), and both are installed using the same mechanisms for applying maintenance. Both types of maintenance update the F-digit of the VRMF to a higher number than any previous maintenance: fix packs use "F" values divisible by 5, CSUs use "F" values not divisible by 5.

For maintenance releases before 1Q 2023, the fourth digit in the VRMF always represents the fix pack level. For example, the first fix pack of the IBM MQ 9.2.0 LTS release is numbered 9.2.0.1.

For more information, see Changes to IBM MQ's maintenance delivery model.

For Long Term Support, maintenance updates for IBM MQ 9.2.0 for Multiplatforms and IBM MQ Appliance are provided as fix packs or cumulative security updates (CSUs).

[z/OS] For z/OS®, maintenance updates are provided as PTFs or cumulative security updates (CSUs). For z/OS UNIX System Services features (that is, JMS, REST API and MQ Console, Connector Pack, and Managed File Transfer) the z/OS PTFs are aligned directly with the Multiplatforms fix packs. Other PTFs are made available as and when they are produced.

IBM MQ 9.2.0 CSU 36

Changes to IBM MQ classes for Java and IBM MQ classes for JMS

From IBM MQ 9.2.0 CSU 36, Known Issue (KI) DT434353 has added support for Java 17 and later to the IBM MQ classes for Java and IBM MQ classes for JMS. As a result of this, the finalize() method has been removed from the following classes in the IBM MQ classes for Java:

com.ibm.mq.MQDistributionList
com.ibm.mq.MQManagedObject
com.ibm.mq.MQQueueManager

and an internal class used by JMS connections, because the use of the finalize() method has been deprecated from Java 9 onwards.

This has implications for applications that do not explicitly close these objects once they have finished with them. Prior to the changes for the KI, the underlying Java Virtual Machine (JVM) would have called the finalize() method on them at some point after they had dropped out of scope. However, this will no longer happen and so applications that do not close the objects could end up leaking them and reporting java.lang.OutOfMemoryError exceptions after upgrading to a Fix Pack or Cumulative Security Update (CSU) that contains the fix for DT434353.

Changes to the IBM MQ Bridge to Salesforce

From IBM MQ 9.2.0 CSU 36, the IBM MQ Bridge to Salesforce has been updated to use Eclipse Jetty 12 and an IBM Semeru Runtime 21. The JRE is included as part of the MQSeriesSFBridge rpm, and can only be used to run the IBM MQ Bridge to Salesforce. Using it to run other applications is not supported.

The IBM Semeru Runtime 21 used to run the IBM MQ Bridge to Salesforce does not support the following CipherSuites that were supported by the IBM Java 8 that the IBM MQ Bridge to Salesforce used to use:

TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA
TLS_ECDHE_ECDSA_WITH_NULL_SHA
TLS_ECDHE_ECDSA_WITH_RC4_128_SHA
TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA
TLS_ECDHE_RSA_WITH_NULL_SHA
TLS_ECDHE_RSA_WITH_RC4_128_SHA
TLS_RSA_WITH_3DES_EDE_CBC_SHA
SSL_RSA_WITH_DES_CBC_SHA
TLS_RSA_WITH_NULL_SHA256
SSL_RSA_WITH_RC4_128_SHA

If the IBM MQ Bridge to Salesforce was previously configured to use one of these to create a secure TLS connection to IBM MQ, it will need to be reconfigured to use a different CipherSuite. For more information about CipherSuites, see TLS CipherSpecs and CipherSuites in IBM MQ classes for JMS.

IBM MQ 9.2.0 Fix Pack 35

IBM MQ 9.2.0 Fix Pack 30

IBM MQ 9.2.0 Fix Pack 25

IBM MQ 9.2.0 CSU 21

[Deprecated] The IBM MQ Bridge to blockchain is deprecated across all releases from November 22 2022 (see US Announcement letter 222-341).

[Removed] For Long Term Support, IBM MQ Bridge to blockchain is removed at IBM MQ 9.2.0 CSU 21.

IBM MQ 9.2.0 Fix Pack 20

IBM MQ 9.2.0 Fix Pack 15

Change to spelling of Java system property used by Managed File Transfer

IBM MQ 9.2.0 Fix Pack 10

New OAMLdapResponseWarningTime parameter in TuningParameters stanza of qm.ini

IBM MQ 9.2.0 Fix Pack 7

IBM MQ 9.2.0 Fix Pack 7 adds the following support:

Support for RHEL 9
For queue managers in IBM MQ Long Term Support (LTS), you must download the manufacturing refresh from Passport Advantage®: M098CML IBM MQ 9.2.0.7 Long Term Support for Linux on x86 64-bit eImage
Support for Ubuntu 22.04
For queue managers in IBM MQ Long Term Support (LTS), you must download the manufacturing refresh from Passport Advantage: M0988ML IBM MQ 9.2.0.7 Long Term Support for Ubuntu on x86 64-bit eImage
Support for Windows 11 and Windows Server 2022
For queue managers in IBM MQ Long Term Support (LTS), you must download the manufacturing refresh from Passport Advantage: M0985ML => IBM MQ 9.2.0.7 Long Term Support for Windows 64-bit elmage

IBM MQ 9.2.0 Fix Pack 6

There are no documentation updates relating to changes to functions and resources in IBM MQ 9.2.0 Fix Pack 6.

IBM MQ 9.2.0 Fix Pack 5

IBM MQ 9.2.0 Fix Pack 4

IBM MQ 9.2.0 Fix Pack 3

IBM MQ 9.2.0 Fix Pack 2