What's New in IBM MQ - Version 8

© 2014 IBM Corporation
Session 1863:
What's new in IBM Messaging
Mark Taylor
marke_taylor@uk.ibm.com
IBM Hursley

Please Note
IBM’s statements regarding its plans, directions, and intent are subject to change or
withdrawal without notice at IBM’s sole discretion.
Information regarding potential future products is intended to outline our general product
direction and it should not be relied on in making a purchasing decision.
The information mentioned regarding potential future products is not a commitment, promise,
or legal obligation to deliver any material, code or functionality. Information about potential
future products may not be incorporated into any contract. The development, release, and
timing of any future features or functionality described for our products remains at our sole
discretion.
Performance is based on measurements and projections using standard IBM benchmarks in a
controlled environment. The actual throughput or performance that any user will experience
will vary depending upon many factors, including considerations such as the amount of
multiprogramming in the user’s job stream, the I/O configuration, the storage configuration,
and the workload processed. Therefore, no assurance can be given that an individual user will
achieve results similar to those stated here.

IBM Messaging – Market segments
Deliver Messaging Backbone for Enterprise
Focus on traditional MQ values, rock-solid enterprise-class
service, ease-of-operation, breadth of platform coverage,
availability, z/OS exploitation
Capture Big Data from Mobile and Internet of Things
Focus on Internet-scale events, m2m device enablement,
zero-admin, security and privacy, feed into real-time
analytics, location-based notifications
Enable Developers to build more scalable, responsive
applications
Focus on new app dev use cases, breadth of languages, ease-of-
deployment, lightweight services, integration with developer
frameworks

Notes
IBM Messaging – Market segments

1990s 2000s 2010s
JMS
MQI
Assured
delivery
IBM
MQSeries
Multi-platform
Mobile
.NET
Common criteria
Eclipse
JMS 1.1
RCMS
IBM MQ
Low
Latency
V1.1
V2
V5
V5.1
V5.3
V2.1
V5.2
V6
V7
V7.0.1
SSL
SOAP
XML
IBM MQ
Managed File
Transfer
IBM
MQTT
HTTP
AJAX
REST
Web 2.0
Managed
File Transfer
Pub/sub
IBM MQ
Everyplace
IBM MQ
Advanced
Message
Security
V7.1
V7.5
Integrated
Messaging
Hypervisors
IBM MQ
Advanced
System Pattern
Application Pattern
IBM MQ
Advanced for
Developers
IBM
MessageSight
Multiple cluster
XMIT queue
Multi-instance
QMGR
IBM MQ
Low
Latency
20th
Anniversary
of MQ at
IMPACT
V8
Timeline

WebSphere MQ V7.1: Feature Summary (Nov 2011)
New Feature Benefits Details
Multi-Version Install
capability on Distributed
platforms
Makes it easier to deploy and upgrade
systems and stage version to version
migration
Unix and Windows support for multiple versions of MQ V7.x (AND
one copy of MQ V7.0.1) down to fixpack levels.
Relocatable installation support.
Applications can connect to any Qmgr
Enhanced Security
Simplified Configuration
Enhanced Authorisation and Auditing
IP address Authorisation capability
Additional crypto algorithms
More granular authorisation for non-local queues
Application Activity Reports
Cloud Support Simplifies and support Cloud deployments Additional HVE images
Enhanced Clustering Improves ease-of-use
Authorisation on Cluster Q rather than XMIT Q on Dist. Platforms
Bind-on-Group Support
Multicast capability
New messaging QoS provides low latency
with high fan-out capability
MQ Pub/Sub Topic space can now map to multicast Group
Addresses
Provides direct interoperability with MQ LLM
Improved scalability and
availability on z/OS
Further exploitation of z196
Customer control over CF storage use
CF Connectivity Loss improvements
Code contention reduced to improve multi-processor linear scaling
Use of MQ Datasets rather than DB2 significantly improves “large”
message capability
Structure rebuild capability for CF Connectivity Loss scenarios
Improved Performance on
Dist platforms
Improved multiprocessor exploitation Various code improvements

WebSphere MQ V7.5: Feature Summary (June 2012)
• For Windows, Unix and Linux
Integrated Installation
Makes it easier to deploy systems
Simpler licensing
Combines several products into a single package
Common experience
Enhanced Clustering
Improves ease-of-use
Improves application isolation
Split Cluster Transmission Queue
Java Application
Identification
Makes it easier to distinguish applications Applications no longer to all have the same name
AMS channel interception
Provides a level of message protection even
when application environment cannot run
AMS
Interception in the SVRCONN still protects messages before
hitting queues
FTE Logger Options Can write FTE audit records to flat file
No longer a requirement for an enterprise database
Easier to read data immediately

2013 Updates

WebSphere MQ: Feature Summary (2013)
• Updates to pricing and function during 2013
MQ 7.1 Value Unit Edition
introduced for z/OS
One time charge (OTC) pricing for zNALC
workloads
Queue managers supporting qualified workloads on System z
New Application License Charge (zNALC) LPARs
Includes WebSphere MQ Client Attach, allowing free-of-charge
connections from MQ Clients to z/OS
SHA-2 CipherSpecs for
SSL/TLS on z/OS
Stronger hashing algorithms
Required/recommended by some authorities
Available from V7.1 GA on distributed platforms
Now also available on z/OS 7.1, with two APARs*
Internet PassThru (MS81)
refresh
Updates to SOE and crypto algorithms
Consistent SSL/TLS support and certificate
DN attributes with MQ V7.1
Uses JRE-provided Java Secure Sockets Extension (JSSE)
Support for SHA-2 and elliptic curve encryption, in line with US
NIST standard SP800-131A recommendation
MQ JCA RA support in WAS
Liberty profile
MQ 7.5.0.2 RA is easily configured in Liberty
Connects to any supported version of MQ
Liberty profile expects resource providers (database, messaging)
to supply provider-specific classes
Configure “wmqJmsClient.rar.location” variable in server.xml
MQ 7.1 Extended
Transactional client for HP
NSS platform
MQ V7.1 function for NonStop applications
accessing MQ on other systems
Free and fully supported
Supports C/C++, COBOL, pTAL, JMS
Supports Guardian and OSS applications including OSS multi-
threaded applications
Available as SupportPac MAT1
*APAR OA39422 needed on z/OS V1R13 for System SSL
*APAR PM77341 for MQ on z/OS V7.1

SHA-2 for SSL/TLS on z/OS
• SHA-2 CipherSpecs available at V7.1 GA on Distributed platforms
– Stronger hashing algorithms
– Required/recommended by some authorities
• Now also available on z/OS
• APAR OA39422 needed on z/OS V1R13 for System SSL
• APAR PM77341 for MQ on z/OS V7.1

Internet Pass-Thru – SupportPac MS81
• Previous MQIPT 2.0 release was in 2008
– Many new operating systems have been released since then
– New cryptographic algorithms since then
• Redesigned to use the JRE-provided Java Secure Sockets Extension (JSSE)
– Previously used a separate SSL implementation
• This gives consistent SSL/TLS support
– Also has consistent certificate DN attributes with MQ V7.1
• US NIST standard SP800-131A recommends:
– Support for SHA-2 (e.g. SHA-256, SHA-384 and SHA-512)
– Elliptic Curve encryption

MQ V7.1 VUE for z/OS
• MQ Value Unit Edition product introduced for z/OS
• One time charge (OTC) pricing for zNALC partition workloads
– OTC price metric instead of MLC
• Run new workloads that are qualified to run on System z New Application
License Charge (zNALC) LPARs
• Includes code and entitlement for WebSphere MQ Client Attach, allowing
free-of-charge connections from MQ Clients to z/OS

JMS in Liberty Profile
• WAS Liberty profile does not include a copy of the MQ JMS client
– For consistency with other resource providers such as databases
– Provider specific classes come from the resource provider
• The RA provided with MQ can be easily configured in Liberty
– Define one variable in server.xml to tell the wmqJmsClient-1.1 where the client is
<variable name="wmqJmsClient.rar.location"
value="${shared.resource.dir}/wmq/wmq.jmsra.rar"/>
• Requires the MQ 7.5.0.2 rar or a fix on top of 7.5.0.1
• More information is at
– https://www.ibmdw.net/wasdev/2013/06/14/using-websphere-mq-with-the-liberty-profile/
– http://www-01.ibm.com/support/docview.wss?uid=swg21633761

New client support for HP NSS (aka Tandem)
• Extended Transactional client support at an MQ V7.1 release level
• Full MQ V7.1 function for NonStop applications accessing MQ on other systems
• Client is free and fully supported
– C / C++ extended transactional client
– Cobol
– pTAL support
– JMS client
• Supports both Guardian and OSS applications
– including OSS multi-threaded applications
• Available as SupportPac MAT1

MQ MFT and Sterling
• For comprehensive file transfer needs IBM provides integration between MQ
Managed File Transfer, and Sterling Connect:Direct, with monitoring by Sterling
Control Center
• Sterling Control Center provides real time visibility into file-driven information
exchanges within and between businesses, and this now supports MQ Managed
File Transfer as well as Sterling Connect:Direct
• New licensing terms give entitlements to MQ MFT alongside Sterling
Connect:Direct and Sterling Control Center

Now available

Reuse is not just for code
• Another new book where the MQ chapter may look familiar

End of Service for old platforms and versions
• MQ V7.0.0 and V7.0.1 for multiplatforms – EOM, EOS effective September 2015
– V7.0 will have had more than 7 years of support
• MQ V7.0.1 for z/OS – EOM, EOS effective September 2015
– V7.0 .0 already out of service

2013 enhancements: Developer
J
r
r
r
Enhancement Benefits Details
MQ Advanced for
Developers – free for devt
use!!
Development use only edition
Free of charge
Full MQ Advanced V7.5 functionality
Available free of charge for development use only
Download from developerWorks, MQdev community
Best effort community assistance
IBM MessageSight for
Developers – free for devt
use!!
Development use only edition
Free of charge
Virtual MessageSight image, updated to V1.1
Available free of charge for development use only
Download from developerWorks, IBM Messaging community
Best effort community assistance
Mosquitto - Open source
MQTT server
Simple, open access to get on-board
with MQTT and MQTT-SN
Proposed Eclipse Mosquitto project for open-source MQTT
server for lightweight devt use
MQTT-SN (MQTT for sensor networks) specification available
IBM MQ Light – alpha
release
Straight forward, easy to use
messaging API for writing scalable
and responsive applications
Download and feedback via developerWorks community
Available free of charge for development use
Currently new API available in Java, more languages to come
Regular updates planned introducing new features and
responding to feedback

IBM MQ Light
• Simplifying Development for developer-led Messaging Applications
• “MQ Light” - a new messaging form factor, easy for developers
– Straightforward download and unzip – zero install
– Simple Web UI– no need to be an infrastructure specialist
• Focus on your application – using simplified messaging API
• Support for popular languages and tooling with seamless migration from
development into production
• MQ Light runtime not for advanced messaging uses cases, enterprise backbone or
highly available/scalable apps
Developer coding in
JavaScript, Java, Python,
Ruby, C#, PHP
Builds messaging into applications
using preferred IDE or CLI
and tests in developer sandbox

Download “MQ Light” alpha and try it today
https://www.ibmdw.net/messaging/mq-light

2013 enhancements: Internet of Things, mobile & m2m
J
r
r
r
Enhancement Benefits Details
IBM MessageSight V1.1
High-performance, reliable, and
scalable messaging - designed
specifically for M2M and Mobile
scenarios
Balance mobile workloads across your enterprise application
server clusters
Single sign-on from mobile devices to your enterprise apps
Disconnected app notification that messages are waiting
IBM Internet of Things
Cloud – statement of
direction
Fully cloud hosted solution for
internet of things
Freemium, PAYG & custom pricing
Scalable connectivity for small and large numbers of devices
Uses industry-standard, MQTT transport
Registration of devices for access to the cloud service offering
Ability for devices to produce and consume events and
messages in near real-time
Mobile Messaging clients
Updated clients for mobile
platforms
Updated clients for Android, iOS & hybrid mobile apps

IBM MessageSight – a messaging Appliance
• Extends the IBM Messaging family with a secure, easy to deploy appliance-based
messaging server, optimized to address the massive scale requirements of
machine to machine (m2m) and mobile use cases
• A million connections, and millions
of messages per second
– Exploits hardware acceleration for
performance
• Designed to sit at the edge of the
enterprise
• Can extend your existing messaging infrastructure or used standalone
• Complements MQ - provides an offload/accelerator for edge of enterprise
scenarios
• Supports familiar APIs with a mixture of standard and high-speed protocols

IBM MessageSight V1.1 - Major enhancements
• Mobile to Enterprise
– Balance mobile workloads across your enterprise application server clusters
– Single sign-on from mobile devices to your enterprise apps
– Disconnected app notification that messages are waiting
• Security
– Implements the Federal government recommendations with NIST SP 800-131A
strengthened security
– Uses client certificate identity for authentication and authorization
• Developer Operations
– New “at-a-glance” system dashboard
– Flexible work environments supported with remote monitoring of MessageSight from
client devices
– Virtual MessageSight image speeds mobile and machine-to-machine app development

2014 Updates

Elastic MQ Open Beta
IBM’s fully managed cloud messaging service
The same straightforward experience as MQ Light, aimed at
developers available as a fully managed public cloud service
in BlueMix
Integrated into the
BlueMix experience
Simple API for node.js
JMS API for Java
Development
focused tooling
Push application into BlueMix and
use Elastic MQ
Develop cloud application
using node, java, etc
Develop offline
using MQ Light
Elastic MQ
1897:
Messaging
in cloud

Notes
2014 Updates – MQ V8
• The rest of this presentation goes into details about MQ V8

IBM MQ V8 delivering best in class enterprise messaging
Platforms &
Standards
Security Scalability System z exploitation
64-bit for all platforms
Userid authentication
via OS & LDAP
Multiplexed client
performance
64-bit buffer pools in MQ for z/OS
means less paging, more
performance
Multiple Cluster
Transmit Queue on all
platforms
User-based
authorisation for Unix
Queue manager vertical
scaling
Performance and capacity
Support for JMS 2.0 AMS for IBM i & z/OS
Publish/Subscribe
improvements
Performance enhancements for
IBM Information Replicator
(QRep)
Improved support for
.Net and WCF
DNS Hostnames in
CHLAUTH records
Routed
publish/subscribe
Exploit zEDC compression
accelerator
SHA-2 for z, i & NSS
Multiple certificates per
queue manager
SMF and shared queue
enhancements

MQ V8 Dates
• Announce: 22 April 2014
• Availability:
– 23 May 2014 (eGA Distributed)
– 13 June 2014 (z/OS and pGA Distributed)

Notes
Dates
• Nothing more to say here

MQ platform and product consistency
• 64-bit server support for all queue manager platforms
– Completion of platform coverage by adding Windows 64-bit engine
– Requires Windows 7 or later
• Multiple Cluster Transmit Queue availability on z/OS and IBM i platforms
– Permits separate monitoring of cluster traffic and prevents one message stream from
affecting throughput of others
• Integration of AMS and MFT capabilities into z/OS and IBM i platforms
– Previously separately installable products
• Client Attach Feature no longer needed on z/OS
– Single price includes support for clients

Notes
MQ platform and product consistency
• This release has all the Distributed queue managers fully supporting 64-bit operations. The final
remaining platform had been Windows, but now the queue manager runs as 64-bit processes.
Existing 32-bit applications continue to work of course, but this should bring additional capacity
and scalability to the queue managers on that OS. The lowest level of Windows now supported is
Windows 7; older versions are not supported. A client-only package for 32-bit versions of Windows
is provided, but the qmgr requires the 64-bit OS.
• MQ V7.5 had one significant new technical feature, the ability to use multiple transmission queues
within MQ clusters. That feature was not available on z/OS or IBM i, where a V7.5 was not
released. MQ V8 brings consistency to those platforms for this feature.
• Another big feature of V7.5 was the closer integration of AMS and File Transfer (MFT). As we will
see later, this pattern has been followed on z/OS and IBM i. On z/OS the features are still
separately licensed, but are better integrated than previously.
• On z/OS, the CAF has been removed both as an installable feature and as a licensing option. All V8
queue managers are now capable of having any number of MQ clients directly connected. For
customers who previously used the lack of a CAF to block client connections, we would strongly
recommend they look at the other security-related controls such as CHLAUTH and SSL/TLS, or
MAXINST values, to continue to prohibit clients. If you extend the number of directly-attached
clients in your environment, make sure you first evaluate things such as CPU costs, performance,
capacity etc.

MQ Security - Authentication
• Verify userid and password
– Typically supplied in MQI CSP structure or from channel security exit
– Or JMS connect(user,pass) method
– New client exit and tool provided to help unchanged applications insert passwords
• Can verify against operating system
– Including PassPhrase for z/OS
• Can verify against LDAP repository on Distributed platforms
– Enabling centralised identity control
• Still constrained to 12 character userids
– With LDAP, supplied username may be "long" (eg an email address or full DN)
– But must have an associated 12 character shortname
• Independent configuration for local bindings and clients
– Ignored, Optional, Required, Required for admin id
1873:
MQ
Security

Notes
MQ Security - Authentication
• Applications can now be authenticated with a userid/password. This can be provided explicitly by the application as
parameters in the MQCONNX verb or equivalent. This builds on features originally implemented in the MQI for MQ
v6, but which were never exploited until now.
• Also, to support client applications, a security exit is provided that can add the userid/password to a connection
request if it is not supplied by the app. The exit reads the qmgr name from an ini file; the file contains the userid
and a protected form of the password – ie not plaintext. The protection of the password is done by a tool that is
also provided.
• When V8 clients connect to V8 qmgrs, the userid/password information is protected against casual wire-sniffing,
even when SSL/TLS is not used. This protection is not as strong as a full TLS-encrypted session, which is preferred,
but is better than sending data in the clear. Obviously both the client and the qmgr must be at V8 for this
protection to work; older clients can still send passwords but they are not protected.
• Authentication is performed against the local OS (all platforms) or against an LDAP directory (Distributed only).
Some operating systems may integrate LDAP services into their local user registry, in the same way as NIS, but
when this is done transparently MQ does not know about it explicitly and can use the OS authentication method.
• Using a central LDAP server means that passwords can be set in a single place. For example, we have used IBM's
LDAP services (BluePages) to authenticate userids. When using LDAP, there is lots of flexibility in what the "userid"
is – in BluePages it is generally the email address – but there must be a field in the schema to return a short name
that can fit into the 12 character MQMD.UserIdentifier field. This short name is also used for authorisation and
must be locally defined to the OS so that permissions can be calculated.
• There are various configuration rules for different modes of connection, to specify whether a password is required,
optional or ignored.

MQ Security - Authorisation
• Make Unix OAM userid-based
– Optional configuration
– Consistent with other platforms
– Will no longer add primary group to authorities during setmqaut
– Chosen at queue manager creation or by editing qm.ini
• Default is still group-based authorisations
$ crtmqm –oa user QMU
----------------
Service:
Name=AuthorizationService
EntryPoints=14
SecurityPolicy=User

Notes
MQ Security - Authorisation
• One further point of consistency in this release is making the Unix authorisation model the same as
for Windows – permissions can now be set for individual users, and not just groups. So running a
command such as "setmqaut –t qmgr –p usr1 +connect" works for just that user, and not the
primary group.
• This is configured by either creating the queue manager with the "-oa user" option or by editing
the ini file as shown for existing queue managers – restarting the queue manager sets it to work in
the new mode. The change is deliberately not dynamic, and requires the restart, because it is so
fundamental to how the queue manager permissions operate, and is not something we would
expect to be done frequently.
• All existing permissions are left unchanged when you switch to user-mode authorisations, so the
group permissions that have been set remain, but new permissions can be set for the users.
• The user-based model is not the default for new queue managers; to keep compatibility with older
systems, the default is still the group-based model.

MQ Security - Other
• Use DNS hostnames in CHLAUTH records
– Also provide a way to disable reverse lookup
• Configurable default certificate label for qmgrs and clients
– Instead of "ibmwebspheremq<qmgr>" or "ibmwebspheremq<userid>"
• Channel-level certificates
– To support different business partners using different CAs.
– For queue managers and C clients
• Not Java yet, because Java 7 JSSE does not fully support SNI
– Both ends must be V8
• Delete Authority record by SID
– Solve problem of orphaned authorities when Windows id is deleted

Notes
MQ Security - Other
• The CHLAUTH rules that were introduced in V7.1 have been extended to meet the most frequently-requested
enhancement – the ability to use hostnames in the rules as well as IP addresses. Names can be used all the same
rules, and in the same way, as IP addresses with the one exception of the listener blocking which is still only
address-based.
• The hostnames can include wildcard patterns such as "*.example.com". The matching is simple string-based; the "."
characters are not treated as special separators.
• The label used to find the queue manager or client's certificate in the SSL keystore is now configurable. This gives
more flexibility in naming, and can even permit sharing of the keystore between multiple queue managers if you
wish. On z/OS, there is in addition a configuration attribute for the QSG-related certificate (traditionally
"ibmwebspheremq<qsgname>".
• A further extension for certificate use is designed for scenarios where you may wish to use different certificates
when communicating with different partners. A common reason for this is when a queue manager is used for both
"internal-facing" channels and for connections to a partner, who may have different certificate requirements, such
as using a different CA. You can now configure a different certificate label to be used on individual channels. The
implementation of this requires both ends of the channel to be at MQ V8, as there has to be cooperation between
the sending side and the receiving side of the channel. And it is not available in all environments; in particular, Java
clients cannot currently participate as the standard JSSE provider does not yet support the Server Name Indication
(SNI) flows that go alongside the socket setup calls.
• One final security feature is specifically for Windows, to deal with situations where users have been deleted from
the system but their MQ permissions have not been deleted from the OAM. You can now use the setmqaut
command to delete permissions based on SID instead of name, and this will remove the orphaned entries.

Pub/sub scalability - cluster behaviour before V8
• All queue managers in a cluster know everything and need to be able to connect
to anyone
CLUS1
FR
TOPIC(T1) CLUSTER(CLUS1)
Sub to T1
Pub to T1
Queue manager
CLUSQMGR knowledge
Channel
Proxy subscription

Notes
Pub/sub scalability - cluster behaviour before V8
• Every queue manager is aware of every subscribed topic string and queue manager in the cluster
• It’s very easy to end up with a fully interconnected cluster
• The load per queue manager is proportional to the total number of queue managers in the cluster
• Many systems in larger clusters are not designed to support such a configuration
• Imagine what is happening in a busy cluster with hundreds of queue managers or more

Pub/sub scalability - cluster behaviour with V8
• New concept of "routed" topics
• Configure subset of queue managers to know everything and connect to everyone
• Publications sent via these queue managers
Queue manager
CLUSQMGR knowledge
Channel
Proxy subscription
CLUS1
TOPIC(TOPIC1) CLUSTER(CLUS1)
FR
Sub to T1
Pub to T1
1870:
MQ
Pub/Sub

Notes
Routed topics
• Publish/subscribe across a cluster previously required direct connectivity between all publishing queue managers
and subscribing queue managers.
• Now routing via intermediary queue managers in the cluster is possible
– The aim is to allow topologies where queue manager-to-queue manager connectivity and knowledge is restricted
• With DIRECT pub/sub:
– Direct publication routing
– Every queue manager must scale with the size of the system
• With ROUTED pub/sub
– The load on the majority of queue managers is independent from the size of the system
– Publications may incur additional hops
• Messages published on topic host routed topics are similar to messages put to clustered queues:
– Think of a routed topic def as a clustered queue and a publisher to the topic as an app putting to that queue
– Each message published is sent to one of the topic host queue managers, and from there onto the queue managers
where subscriptions exist
– Messages are workload balanced across all topic hosts with available channels from the publishing queue manager to
the topic hosts
• Unavailable topic hosts are avoided
– Workload balancing behaviour is as for a clustered queue using all default settings (CLWLPRTY, CLWLRANK, etc.) except
for DEFBIND, which is effectively set to NOT_FIXED
• Each individual message is ‘evenly’ workload balanced across topic hosts
• Workload balancing is based on the cluster channel rather than the topic (as for queues), so channel workload
balancing control still applies (CLWLPRTY, CLWLRANK, CLWLWGHT)

Configuration of routed topics
• Topic routing is configured in the TOPIC object definition
– Uses the CLROUTE property:
– DIRECT: Provides V7 behaviour, publications travel directly from publishing queue
managers to subscribing queue managers
– TOPICHOST: publications travel via a topic hosting queue manager
• New function in MQ V8
– Only V8 queue managers can participate in routed clustered publish/subscribe
– Full repositories must also be at V8
– Older queue managers are not told of the routed topic definitions and
therefore behave as if the topic was not clustered.
– All V7 queue managers can continue to participate in direct clustered pub/sub
DEFINE TOPIC(topic)
CLUSTER(clustername)
CLROUTE(DIRECT|TOPICHOST)

Improved pub/sub status reporting
• Additional display attributes on DISPLAY PUBSUB.
• Permits detection of unexpected growth in topics/subscriptions
– Can gauge the magnitude of a DISPLAY TPSTATUS/SUB/SBSTATUS command.
DISPLAY PUBSUB ALL
3 : DISPLAY PUBSUB ALL
AMQ8723: Display pub/sub status details.
QMNAME(QMGR3) TYPE(LOCAL)
STATUS(ACTIVE) SUBCOUNT(241)
TPCOUNT(105)

General pub/sub improvements
• More efficient handling of subscriptions for popular topic sub-trees and
dynamic subscriptions
– MQ V7.x behaviour sends out individual proxy subscriptions
– MQ V8 topic object with PROXYSUB set to FORCE
• Generates a single wildcarded subscription
• Disables individual proxy subs for topic strings lower in the topic tree
• Better pub/sub error handling in multi-queue manager environments
• Selectors are evaluated on the message as published, before modification
by the publish operation, for delivery to each subscriber
• More efficient handling of large numbers of topics
– Linear scaling to at least a million topics

Notes
General pub/sub improvements

Changes to runmqsc
• Can now be run by any user (not just mqm group)
– Can take a userid/password for authentication: new "-u" flag
• Can now connect as a client to remote systems: new "-c" flag
– Client channel definitions located by MQSERVER -> MQCHLLIB -> MQCHLTAB
• Can act as standalone program to create local CCDT: new "-n" flag
– Does not connect to queue manager; commands subset to update local
channel definition file
$ ls –l runmqsc
-r-xr-xr-x 1 mqm mqm 25930 06 Mar 04:46 runmqsc
$ export MQPROMPT="MQ +MQ_INSTALLATION_NAME+> "
$ runmqsc –u metaylor QM1
5724-H72 (C) Copyright IBM Corp. 1994, 2014.
Enter password:
******
Starting MQSC for queue manager QM1.
MQ Installation5> DIS QMGR
…
• Ease of use
– Customisable prompt
using environment
variable
– New "exit" and "quit"
synonyms for "end"

Notes
Changes to runmqsc
• This release introduces a number of changes to the runmqsc program
• Firstly, it is now exectuable by any user, not just members of the mqm group. Security controls still apply of course,
but the security is checked on each individual command. This makes it easier to have MQ administrators who have
been granted full access to objects, but who are not in the mqm group.
• Another reason for making runmqsc world-executable was to make it usable on machines which do not have queue
managers installed. It is now installed even on client-only systems, and it can be run either as a client program
connecting directly to a remote queue manager, or as a completely standalone program to permit local creation of
the Client Channel Definition Table. So you can create and modify a CCDT with no queue manager access at all.
• The program is one of several that have been updated to accept a userid for authentication. If the –u flag is given,
then a password is requested. Note that the password is read from stdin so that it can be redirected from a file if
necessary. If you also use scripts piped into runmqsc, then you can group commands to avoid having to put the
password in the same script as the MQSC commands.
– Unix: (cat password.stash ; cat script.mqsc) | runmqsc –u userid QM1
– Windows: (type password.stash & type script.mqsc) | runmqsc –u userid QM1
• There are also a couple of usability enhancements. Firstly, there are some synomyms added to complete an MQSC
session – END, QUIT and EXIT can all be used so you don't have to try them all. Different scripting environments for
different products typically use one of these commands, and it's annoying to have to remember which goes with
which.
• Secondly, you can now make it easier to see that you are in an MQSC command environment and some details of
the current environment by setting the MQPROMPT environment variable. Replaceable inserts are recognised such
as date and time, and installation-specific details. These are the same variable subsitutions as available for SERVICE
objects.

Distributed Performance
• Improvements to distributed queue manager scaling
– Improve efficiency
– Better exploitation of wider SMP machines
• Multiplexed client performance
– Increase the performance of multiplexed client channels (SHRCONV > 0)
– Especially for SHRCONV=1
• Other areas that helped:
– Cache alignment for internal structures
– Extended 64-bit exploitation for locking primitives
– RFH2 handling, particularly for waiting-getter
• Fewer copies of data are needed
– Better compiler optimisations
– Faster data conversion (especially for 1208)
• Many messages are in 1208 codepage
• Optimised handling when the queue manager needs to convert them

Distributed Performance: Object Catalogue restructure
• This test has a reliance on repeatedly opening and closing queues
• Although old, this shows the kind of detail investigated during development

Distributed Performance: Persistent Messaging
• A realistic view of how persistent message performance has improved

Distributed Performance: Non-persistent Messaging
• CPU Limited example

Distributed Performance: Non-persistent Messaging
 Lock Limited example

Notes
Performance improvements
• These charts are examples of some of the performance improvements made in this release. They
are not from the GA level but are representative; the official performance reports will come later.
• Measurements have been made of not just "traditional" benchmarks but also of other patterns
that we have seen as being typical application designs.
• The first chart in this batch is several months old, but shows an example of how testing
progressed. Rather than using the optimal application pattern (basically open the queues at the
start and then keep putting/getting messages), this was looking at what happens as applications
frequently start and stop, causing lots of inquiries to the Object Catalogue (the list of queues and
key attributes). Looking at where the bottlenecks were in that scenario allowed us to reduce some
contention points and therefore increase the parallelism and the number of transactions. The
"dip" in this chart was then investigated further to deal with it.
• Other charts show typical performance improvements for persistent and non-persistent
messaging.
• To repeat though, numbers will always vary by platform and workload. The new performance
reports will show the more formal and official numbers.

MQ for z/OS: 64-bit bufferpools
• 64-bit buffer pools in MQ for z/OS
– Allows large numbers of messages to be cached before writing to pagesets
– Allows MQ to exploit the vast amount of storage on today's machines
• Improves performance of putting/getting messages by minimizing disk I/O
• Minimizes administrative overhead of managing buffer pools
• Buffer pool LOCATION attribute says where it is located relative to the bar
– BELOW: The default. Buffer pool is located below the bar in 31 bit storage
– ABOVE: Buffer pool is located above the bar in 64 bit storage
– This can be altered dynamically
• Storage can be pinned based on pageclass attribute
1876: MQ
z/OS Deep
Dive

Notes
Buffer pool problems before V8
• There is not much space below the bar for buffer pools once queue manager code and data is
taken into account. Maximum 1.6GB available for buffer pools depending on common area
• Putting/getting messages into the buffer pool works at 'memory' speed, putting/getting messages
from the page set works at 'disk' speed
• For scenarios where several applications read and/or write large number of messages to the same
buffer pool a lot of time is spent getting pages from page set into buffer pool and getting pages
from buffer pool into page set
– This is detrimental for performance
• A maximum of 16 buffer pools are supported while up to 100 page sets are supported
• This can result in a lot of time spent tuning buffer pool sizes and the relationship between queues,
buffer pools and page sets
• These problems are resolved by allowing bufferpools to be defined in 64-bit space, above the bar

• Buffer pools above the bar can (theoretically) use up to 16 EB storage
• Increased maximum size of pool to 999,999,999 buffers
– Was 500,000
• Allows up to 100 buffer pools
– Was 16
– Can have a 1-1 page set – buffer pool mapping
DATA
CODE
DATA
Buffer
Pool
Buffer
Pool
Buffer
Pool
Buffer
Pool
2 GB
BAR
16 EB
Up to 1.6 GB
Available
Queue Manager Address
Space
Buffer
Pool

Notes
• 64-bit bufferpools can now theoretically use a huge amount of storage
• Having the same number of pools and pagesets makes it much simpler to monitor and control the
usage of these resources
• SMF 115, subtype 215
– Up to 100 buffer pools are now supported. However there is not enough space for 100 buffer manager
statistics records (QPST) in the existing SMF 115, subtype 2, record
– If OPMODE(NEWFUNC,800) is specified in system parameters then an SMF 115, subtype 215, record will be
cut for buffer manager statistics. The SMF 115, subtype 2, record will still contain the self-defining section for
buffer manager but it will be all zeros
– If OPMODE(COMPAT,800) is specified in system parameters then buffer manager statistics will continue to
be in SMF 115, subtype 2.

MQ for z/OS: Performance and Capacity
• Log RBA constraint relief
– Already improved messages to warn of approaching RBA
– Now widening RBA field from 6 to 8 bytes
– At 100MB/sec this will now take about 5578 years to fill
• Support for LP64 batch/RRS C applications
• Performance enhancements for IBM Information Replicator (QRep) and similar
application patterns
– Read-ahead and changes to deferred write processing allows MQ to increase
sustainable data rates
• General improvements to channel performance

Notes
Log RBA extensions
• WebSphere MQ for z/OS V7 implements a 6 byte Log RBA (Relative Byte Address)
– This give an RBA range of 0 to x'FFFFFFFFFFFF' (= 255TB)
– Some customers are now reaching this limit in 12 months
• If we reach the end of the Log RBA range (i.e. “wrap”):
– Queue Manager terminates and requires a cold start – a disruptive outage
– Potential for loss of persistent data
• To avoid an outage:
– Run CSQUTIL RESETPAGE, at regular planned intervals, to RESET the LOG RBA
• With current maintenance, MQ V7.x issues warning messages when approaching maximum
– Then terminates, to prevent loss of data, if log RBA reaches x'FFF800000000'.
• V8 increases size of Log RBA to 8 bytes
– Upper limit on logical log will be 64K times bigger
– Format of BSDS and log records will change to accommodate 8 byte RBAs, URIDs will become 8 bytes long
– Like DB2, the control point for new function is a BSDS conversion utility
– Run the new CSQJUCNV utility
• utility will check that entire QSG is at correct level
• copies data from old primary / secondary BSDS pair to new primary / secondary pair
• All V8 queue managers can read data in both the old and new formats
• All V8 queue managers and utilities will display all log RBAs as 8 bytes
• V8 will ONLY write in new format, once BSDS has been converted

Notes
LP64 Support
• Externalising technology previously used by Broker and JMS
• Limited to C language (no 64bit COBOL)
– LP64 compile option
– Supported by cmqc.h
• Restricted environments
– Batch, TSO, USS
– CICS and IMS do not support 64bit apps
• Must use sidedeck & DLL, not stubs:
– csqbmq2x (uncoordinated batch & USS)
– csqbrr2x (RRS coordinated, srrcmit())
– csqbri2x (RRS coordinated, MQCMIT)

Notes
Performance improvements
• QRep has implemented a common application pattern – basically a single-stream reading or
writing of messages. That program, and others that follow the same pattern, can benefit from
some of the performance enhancements in MQ. For example, fetching data for the "next message"
from a pageset at the same time as for the "current message" (readahead) can reduce the I/O
operations and hence reduce CPU and increase throughput.

MQ for z/OS: Other features
• Exploitation of zEDC compression accelerator
– SMF
– Channel compression (zlibfast option) can be useful when using SSL
• Support for Flash Express feature on zEC12 and zBC12 servers
– Improves resiliency of Coupling Facility with cost-effective standby capacity to handle
overflow of shared queues
– Messages <63K fully held in Flash
– Messages >63K have pointers in Flash, body in SMDS just as for traditional CF structures
• SMF enhancements
– Channel statistics allow better monitoring and tuning of channel behaviour
– Correlation of MQ and CICS statistics
• Message suppression
– Up to 16 message numbers (particularly X500,X501) can be defined to be excluded
– Removes cost of writing WTO messages which are then ignored
– Can now differentiate between messages for client channels and other types

AMS and MFT integration with z/OS
• Following the model used by MQ V7.5 on distributed for closer integration
• AMS
– Starts automatically with qmgr
– Reduced overhead (now only one started task instead of 2)
– Policies and their administration remain unchanged
• MFT
– Now looks more natural for a z/OS person
– Closer integration with standard system facilities such as ARM
– Started task templates
– Supported JCL provided instead of samples
– Job info logged to JCL task
• Both features still separately licensed

JMS 2.0
• Long-awaited update from JMS 1.1 standard
• JMS 2.0 – JSR 343 Java Message Service (JMS 2.0)
– Final release on 21 May 2013.
– https://java.net/projects/jms-spec/pages/JMS20FinalRelease
• New Messaging Features
– Delivery Delay
– Asynchronous Send
– Subscriptions can be shared across a messaging provider
• API Changes
– Use of java.lang.AutoCloseable
– Simplified API [combined connection/session]
– Session doesn't need parameters (for Java EE)
• Java 7 prereq
• Java EE 7 prereq for use of the Resource Adapter in Application Servers

Notes
JMS 2.0
• The JMS 2.0 specification now requires JMS providers to implement both P2P and Pub-Sub.
• The following new messaging features have been added in JMS 2.0:
– Delivery delay: a message producer can now specify that a message must not be delivered until after a specified time interval.
– New send methods have been added to allow an application to send messages asynchronously.
– JMS providers must now set the JMSXDeliveryCount message property.
• The following change has been made to aid scalability:
– Applications are now permitted to create multiple consumers on the same durable or non-durable topic subscription. In previous
versions of JMS only a single consumer was permitted.
• Several changes have been made to the JMS API to make it simpler and easier to use:
– Connection, Session and other objects with a close method now implement the java.jang.AutoCloseable interface to allow them to
be used in a Java SE 7 try-with-resources statement.
– A new "simplified API" has been added which offers a simpler alternative to the standard API, especially in Java EE applications.
– New methods have been added to create a session without the need to supply redundant arguments.
– Although setting client ID remains mandatory when creating an unshared durable subscription, it is optional when creating a
shared durable subscription.
– A new method getBody has been added to allow an application to extract the body directly from a Message without the need to
cast it first to an appropriate subtype.
• New methods have been added to Session which return a MessageConsumer on a durable topic subscription. Applications could
previously only obtain a domain-specific TopicSubscriber, even though its use was discouraged.
• The specification has been clarified in various places.
• JMS 2.0 implementations require Java 7 for the runtime. They also require Java EE 7 for use of the Resource Adapter in Application
Servers. Not all App Servers currently support Java EE 7. However, as with all client implementations, older versions of the RA still
work when communicating to an MQ V8 queue manager.

.Net enhancements
• MQ .Net classes can now use SSL without needing the C client installed
– A secure fully-managed .Net implementation
– Uses Windows native certificate stores
• For MQ .NET classes (aka Base .NET Classes) SSL properties can be set at
– MQEnvironment.cs
– Hashtable properties (input parameter to MQQueueManager constructor)
• For XMS .NET, SSL properties can be set as ConnectionFactory properties
• WCF interface extended to non-SOAP, non-JMS messages
– Making it easier for apps using WCF to communicate with any other MQ application

Notes
.Net enhancements: SSL
• MQ .NET Unmanaged mode SSL support
– MQ .NET in unmanaged mode supports the SSL feature since MQ v6.0.1
– Based on based on C Client (and GSKit)
• MQ .NET Managed mode SSL support
– Based on Microsoft SSLStreams/Security kit.
• Managed SSL limitations include
– CipherSpec setting can be made only at Windows Group policy (gpedit.msc).
• CipherSpec set on client channel is used only to determine SSLProtocol.
– Make sure you set same cipherspec on Windows group policy and client channel to make sure correct
protocol version is flowed.
– KeyRepository uses Windows Key Store only.
• Set value as *SYSTEM for accessing certificates under Computer Account
• Set value as *USER for accessing certificates under User account
– FIPS can be enabled only from Windows group policy.
– KEYRESET is not supported by Microsoft SSLStreams
• This limitation is overridden by using KEYRESETCOUNT and Client Auto Reconnect feature of MQ.
• Application can set KEYRESETCOUNT during connection, once the number of bytes sent/received reaches the
count, connection will be forcibly broken. If Client Auto Reconnect facility is enabled, connection will be
automatically reconnected.
– No managed way to support Cryptographic hardware
• Product samples have been updated to demonstrate SSL Connections.
– WebSphere MQtoolsdotnetsamplescsbaseSimple

Notes
.Net enhancements: WCF
• Additional model for sending MQ messages from WCF applications
– Both SOAP/JMS and MQMessaging can be used
• SOAP/JMS
– Supported since MQ v7.0.1
– Based on XMS .NET and makes JMS-like calls for MQI
– Uses JMS nomenclature for URI(jms:) and Bindings
– Now also supports “wmq:” style of URI
• Uses MA93 supportpac specification for URI format/syntax
– Messages can be delivered only to SOAP enabled Client/Service
• MQMessaging
– New in MQ V8.0
– Transmits MQ Messages over the WCF Channel without any SOAP headers
– Use “wmq:” style of URI
• Uses MA93 supportpac specification for URI format/syntax
– Messages can be delivered to SOAP or NON-SOAP MQ applications

IBM has a 20 year track record of innovation in Messaging
1990s 2000s 2010s
JMS
MQI
Assured
delivery
IBM
MQSeries
Multi-platform
Mobile
.NET
Common criteria
Eclipse
JMS 1.1
RCMS
IBM MQ
Low
Latency
V1.1
V2
V5
V5.1
V5.3
V2.1
V5.2
V6
V7
V7.0.1
SSL
SOAP
XML
IBM MQ
Managed File
Transfer
IBM
MQTT
HTTP
AJAX
REST
Web 2.0
Managed
File Transfer
Pub/sub
IBM MQ
Everyplace
IBM MQ
Advanced
Message
Security
V7.1
V7.5
Integrated
Messaging
Hypervisors
IBM MQ
Advanced
System Pattern
Application Pattern
IBM MQ
Advanced for
Developers
IBM
MessageSight
Multiple cluster
XMIT queue
Multi-instance
QMGR
IBM MQ
Low
Latency
20th
Anniversary
of MQ at
IMPACT
V8

And continues to invest in all Messaging markets
• Enterprise Messaging where MQ continues to lead
• Messaging for Mobile and the Internet of Things
• Supporting Cloud deployments with Messaging services
• Helping developers use Application Messaging to create better applications

Messaging Sessions this Week
Monday Tuesday Wednesday Thursday
09:00 1868: IBM WS MQ: Disaster Recovery
1870: IBM WS MQ: Using Pub Sub in an MQ Network
1924: Roundtable: IBM WS MQ Light in a IBM WS MQ
Infrastructure
10:30 1880: Secure Messages with IBM WS
MQ Advanced Message Security
1866: Introduction to IBM Messaging
Capabilities
2640: MQ Telemetry Transport (MQTT)
Details
3134: Meet the Experts: IBM MessageSight
1924: Roundtable: IBM WS MQ Light in a IBM WS
MQ Infrastructure
1896: How to Develop Responsive Applications
with IBM WS MQ Light
1885: IBM WS MQ on z/OS & Distributed Platforms -
Are They Like Oil & Water
1917: Hands-on Lab: Developing a First Application
with IBM WS MQ Light
1294: Enable Active-Active Business Through
Enterprise High-availability Messaging
Technology
1873: IBM WS MQ Security: Latest Features
Deep Dive
12:00 LUNCH LUNCH LUNCH LUNCH
3420: Managing What Needs to Be Managed - It
Shouldn’t Matter Where It Is
13:00 1227: How Not to Run a Certificate
Management Center of Excellence
1869: IBM WS MQ: Using the Publish
Subscribe Messaging Paradigm
1863: What's New in IBM Messaging
1872: IBM WS MQ: Managing Workloads, Scaling
& Availability with MQ Clusters
1879: Using IBM WS MQ in Managed File Transfer
Environments
1922: Roundtable: IBM Messaging Feedback
1883: Where Is the Message - Analyze IBM
WS MQ Recovery Logs, Trace Routes, & Look
In Applications
14:15 1800: IBM WS MQ for z/OS & CICS: Workload
Balancing in a Plexed World
1863: What's New in IBM Messaging
1924: Roundtable: IBM WS MQ Light in a IBM WS MQ
Infrastructure
1876: IBM WS MQ for z/OS: Latest Features Deep
Dive
1229: The IBM WS MQ Toolbox: 20 Scripts,
One-liners, & Utilities for UNIX & Windows
1804: Mean Time to Innocence: IBM WS MQ
Problem Determination
16:00 1877: IBM WS MQ for z/OS:
Performance & Accounting
1894: What Is IBM WS MQ
Light & Why It Matters
15:45 1882: Building a Scalable & Continuously Avail-
able IBM WS MQ Infrastructure with Travelport
1720: Building a Managed File Transfer Service at
ADP
1897: Messaging in the Cloud with IBM WS MQ
Light & IBM BlueMix
1916:Hands-onLab:IBMWSMQ
3133: Meet the Experts: IBM Messaging
1874: IBM WS MQ: Performance & Internals Deep Dive
(Not zOS)
1866: Introduction to IBM Messaging Capabilities
2454: Using IBMs Managed File
Transfer Portfolio to Maximize
Data Effectiveness
17:15 1881: Using IBM WS MQ with
IBM WAS & Liberty Profile
1873: IBM WS MQ Security:
Latest Features Deep Dive
17:00 1878: IBM WS MQ for zOS: Shared Queues
1867: IBM WS MQ: High Availability
2646: Discover the Value IBM Software Delivers On Top of
Open Source

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