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 You are planning to install or upgrade a WebSphere MQ server on a UNIX or Linux system and need to know how to tune the operating system parameters, including kernel parameters related to inter-process communication (IPC) resources like shared memory and semaphores. Cause If you do not configure your operating system parameters properly, the WebSphere MQ server may exhaust system resources when you process your production workload. Depending on the resource which was exhausted, WebSphere MQ could return an error to the application like MQRC_RESOURCE_PROBLEM (2012), write a message to its error logs, create FDC files in the /var/mqm/errors directory, or even terminate. Resolving the problem IBM Recommendations Using the mqconfig Script Operating System Notes IPC Tuning Parameters Older Version for WebSphere MQ 6.0 and 5.3 IBM Recommendations IBM recommends default values in the WebSphere MQ documentation for several operatin...

Continuous availability to send MQ messages, with no single point of failure Linear horizontal scale of throughput, for both MQ and the attaching applications Exactly once delivery, with high availability of individual persistent messages Three messaging styles: Request/response, fire-and-forget, and publish/subscribe A hub model, with a centralized MQ infrastructure scaled independently from the application Part 1 of this article series describes the overall infrastructure topology and summarizes how it meets the above non-functional requirements for a wide range of applications. Subsequent parts show you how to configure the various components, including how to code applications that connect to the infrastructure. The topology contains four logical tiers: Figure 1. Topology overview Sender Applications sending the message. Sender gateway MQ queue managers that the sending applications connect to. Receiver gateway MQ queue managers that the receiving applicati...

[root@karthik KARTHICK]# dspmqver Name:        WebSphere MQ Version:     7.5.0.1 Level:       p750-001-130308.1 BuildType:   IKAP - (Production) Platform:    WebSphere MQ for Linux (x86-64 platform) Mode:        64-bit O/S:         Linux 2.6.32-220.el6.x86_64 InstName:    Installation1 InstDesc: InstPath:    /opt/mqm DataPath:    /var/mqm Primary:     Yes MaxCmdLevel: 750 [root@karthik KARTHICK]# [root@karthik KARTHICK]# cat mqat.ini #*******************************************************************# #* Module Name: mqat.ini                                 ...

The default for WebSphere MQ is circular logging.  If you do not specify otherwise, when you create a queue manager it will have circular logging invoked. Changing the type of logging in the qm.ini after queue manager has been created will not change the way the queue manager handles logging.  If you wish to convert from circular to linear or vice versa, you would have to recreate the queue manager specifying the new type of logging at creation time. Linear logging allows you to recreate lost or damaged data by replaying the contents of the log. This developerWorks article gives a comparison between circular and linear logs to help you evaluate which one might be best for your system: Circular logs vs. linear logs Should you choose to use linear logs, this will require that you manage the log files. Otherwise, the log files will grow infinitely and eventually fill your file system. You can archive inactive logs because they are not required for media recove...

Impact Conference Overview Visit the Impact 2013 website to register and for more information on tracks, sessions, conference activities, and more. Session Preview Tool is Live!  Browse the session preview tool and learn how the curriculum allows attendees to build new skills and increase expertise in a range of topics: Mobile, Big Data, cloud, Expert Integrated Systems, Social, BPM and ODM! Guest Speakers Announced! Attend Impact and join in conversations with this impressive line up ofguest speakers: Tim O'Reilly , CEO and founder of O'Reilly Media Grady Booch , IBM Fellow and Chief Scientist for Software Engineering Michael Copeland , Senior editor of Wired Magazine Rich Karlgard , Publisher, Forbes  Look What's New at Impact 2013! Introducing MobileFirst, with a new Mobile Enterprise track, and added emphasis on IBM PureSystems™, cloud, process and integration technologies More on-site certifications and hands-on labs and more ...

    DISPLAY AUTHINFO     DISPLAY AUTHREC     DISPLAY AUTHSERV     DISPLAY CHANNEL     DISPLAY CHLAUTH     DISPLAY CHSTATUS     DISPLAY CLUSQMGR     DISPLAY COMMINFO     DISPLAY CONN     DISPLAY ENTAUTH     DISPLAY LISTENER     DISPLAY LSSTATUS     DISPLAY NAMELIST     DISPLAY PROCESS     DISPLAY PUBSUB     DISPLAY QALIAS     DISPLAY QCLUSTER     DISPLAY QLOCAL     DISPLAY QMGR     DISPLAY QMODEL     DISPLAY QMSTATUS     DISPLAY QREMOTE     DISPLAY QSTATUS     DISPLAY QUEUE     DISPLAY SBSTATUS     DISPLAY SERVICE     DISPLAY SUB     DISPLAY SVSTATUS     DISPLAY TCLUSTER     DISPLAY TOPIC     DISPLAY TPSTATUS

dis qmgr      1 : dis qmgr AMQ8408: Display Queue Manager details.    QMNAME(KARTHICK)                        ACCTCONO(DISABLED)    ACCTINT(1800)                           ACCTMQI(OFF)    ACCTQ(OFF)                              ACTIVREC(MSG)    ACTVCONO(DISABLED)                      ACTVTRC(OFF)    ALTDATE(2013-04-21)                     ALTTIME(08.54.18)    AUTHOREV(DISABLED)                      CCSID(1208)    CERTVPOL(ANY)                           CHAD(DISABLED)   ...