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Developed in Scotland, Telecommunications Access Method (TCAM) came along in 1971 with the birth of TSO. It supported asynchronous messaging, as with MQ. TCAM 3.0 added in reusable disk message queues for recovery soon thereafter, as with MQ. A high-level PL/I program could be used to access TRANSIENT datasets (dynamic message queues). Reading a message from a transient dataset resulted in that message is removed from the queue, as with a non-browse READ with MQ. With the advent of computers, IBM saw an opportunity to apply new technology to the need for message switching. In the early 1960s, IBM marketed computer-like devices, such as the 7740 and 7750 message switching systems. The IBM System/360 was announced in April 1964 and with it came communication access methods such as BTAM and QTAM (Basic and Queued Telecommunications Access Methods). In the late 1960s, still another communication access method became available and it was known as TCAM, the Telecommunications Access Metho

WebSphere MQ provides assured one-time delivery of messages across a wide variety of platforms. The product emphasizes reliability and robustness of message traffic, and ensures that a message should never be lost if MQ is appropriately configured. It needs to be remembered that a message in the context of MQ has no implication other than a gathering of data. MQ is very generalized and can be used as a robust substitute for many forms of intercommunication. For example, it can be used to implement reliable delivery of large files as a substitute for FTP. MQ provides application designers a mechanism to achieve non-time-dependent architecture. Messages can be sent from one application to another, regardless of whether the applications are running at the same time. If a message receiver application is not running when a sender sends it a message, the queue manager will hold the message until the receiver asks for it. Ordering of all messages is preserved, by default this is in FIFO

A channel is a communication link used by distributed queue managers. There are two categories of channel in MQ: Message channels, which are unidirectional, and transfer messages from one queue manager to another. MQI channels, which are bidirectional, and transfer MQI calls from a MQ client to a queue manager, and responses from a queue manager to a MQ client. There are two types of MQI channel : server-connection and client-connection. MQ 6.0, "Application Programming Guide", SC34-6595-01, page 45 [65/601] The definition of each end of a message channel can be one of the following types: Sender Receiver Server Requester Cluster sender Cluster receiver Do not confuse message channels with MQI channels. There are two types of MQI channel : server-connection and client-connection. A message channel is defined using one of these types defined at one end, and a compatible type at the other end. Possible combinations are: Sender - Receiver Requester - Server R

IBM Websphere MQ Processes Processes AMQMTRBN . amqhasmn.exe - the logger. amqmsrvn.exe - COM server. amqmtbrn.exe - . amqpcsea.exe - the command server. amqrmppa.exe - channel process. amqrrmfa.exe - repository process (for clusters). amqsvc.exe - . amqxssvn.exe - shared memory server(s). amqzdmaa.exe - deferred message processor. amqzfuma.exe - OAM process. amqzlaa0.exe - queue manager agents (LQM agents). amqzllp0.exe - checkpoint processor. amqzxma0.exe - processing controller. runmqchi.exe - channel initiator. runmqlsr.exe - listener. Description of MQ tasks : When a queue manager is running, you see some or all of the following batch jobs running under the QMQM user profile in the MQ subsystem. Job name Function AMQALMPX The checkpoint processor that periodically takes journal checkpoints. AMQCLMAA Non-threaded TCP/IP listener. AMQCRSTA TCP/IP-invoked channel responder. AMQCRS6B LU62 receiver channel and client connection (see note). AMQFCXBA Broker worker jo

Oracle Fusion Middleware Components Enterprise Application Server Weblogic Server Oracle Application Server Integration & Process Management BPEL Process Manager Business Activity Monitoring Business Rules Enterprise Connectivity (Adapters) Enterprise Messaging Service Enterprise Service Bus Oracle Application server B2B Service Registry Web Services Manager Development Tools Application Development Framework JDeveloper SOA Suite TopLink Forms Services Developer Suite Business Intelligence Business Intelligence 10g[7] Business Activity Monitoring Discoverer Data Hubs BI Publisher Reports Services Systems Management Enterprise Manager 10g Web Services Manager User Interaction Beehive Collaboration Suite Portal Oracle Webcenter Real-Time Collaboration Unified Messaging Workspaces Content Management Web content management Records management Enterprise search Digital asset management Email archiving Identity management Identity Management

Oracle Fusion Middleware (OFM) is a portfolio of software products, produced by Oracle, that spans multiple services, including J2EE and developer tools, integration services, business intelligence, collaboration, and content management. OFM is based on open standards such as BPEL, SOAP, XML and JMS.[1] Many of the products included under the Oracle Fusion Middleware banner are not themselves middleware products, Fusion Middleware essentially being a rebranding of many of Oracle's products outside of their core database and applications software offerings. According to Oracle, by 2006 over 30,000 organizations were Fusion Middleware customers, including over 35 of the world's 50 largest companies and more than 750 of the BusinessWeek Global 1000, with OFM also supported by 7,500 partners. Oracle Fusion Middleware is designed to support development, deployment, and management of Service-Oriented Architecture. It includes what Oracle calls "Hot-Pluggable" architectur

WebSphere Message Broker WebSphere software Features and benefits IBM WebSphere Message Broker V6.1 supports the following key capabilities and benefits: Platform-Independent Based Enterprise Service Bus * Distribute any type of information across and between multiple diverse systems and applications, providing delivery of the right information in the right format at the right time * Reduce point-to-point interconnections and simplify application programming through separation of integration logic from the applications and from process logic * Powerful publish-and-subscribe matching engine routes information in real time based on topic and content to any endpoint * Validate and transform messages in-flight between any combination of different message formats, including Web Services, other XML and non-XML formats * Route messages based on (evaluated) business rules to match information content and business processes * Improve business agility by dynamically r

Middleware is computer software that connects software components or applications. The software consists of a set of services that allow multiple processes running on one or more machines to interact across a network. This technology evolved to provide for interoperability in support of the move to coherent distributed architectures, which are used most often to support and simplify complex, distributed applications. It includes web servers, application servers, and similar tools that support application development and delivery. Middleware is especially integral to modern information technology based on XML, SOAP, Web services, and service-oriented architecture. Middleware sits "in the middle" between application software working on different operating systems. It is similar to the middle layer of a three-tier single system architecture, except that it is stretched across multiple systems or applications. Examples include database systems, telecommunications software, tra

13. What is Peer-to-Peer communication? Peer-to-Peer : Most early client/server applications were implemented using low level conversational peer-to-peer products. The term peer-to-peer indicates that the two sides of a communication link use the same protocol interface to conduct a networked conversation. Any computer can initiate a conversation with any other computer. A peer-to-peer network relationship defines one in which computer on the network communicate with each other as equals. Each computer is responsible for making its own resources available. 14. What are the different categories of client/Server applications? a) Host-Based Processing b) Client-Based Processing c) Coopeartive Processing BDV-842844-BDV 15. What is Server & Network? Server : A server is the machine that runs data management software that has been designed for server functionality. A server has operating system software, data management software and a portion of the network software. N

7. What are the different categories of client/Server applications? Classes of client/server applications: Client/Server applications can be categorized by class, based on where most of the processing is done. Each class requires different hardware and software capabilities on the client, the server and the network. 1. Host-Based Processing 2. Client-Based Processing 3. Coopeartive Processing 8. What is meant by Client, Server & Network? Client : The client hardware is the desktop machine that runs client software. It could be a micro or a workstation. The client software formulates data request and passes the request to the network software. This software sends the request to the server, accepts the result from the server and passes the request back to the client software. Server : A server is the machine that runs data management software that has been designed for server functionality. A server has operating system software, data management software and a portio

Middleware Technologies UNIT I 1. What is Client/Server? Client : The client hardware is the desktop machine that runs client software. It could be a micro or a workstation. The client software formulates data request and passes the request to the network software. This software sends the request to the server, accepts the result from the server and passes the request back to the client software. Server : A server is the machine that runs data management software that has been designed for server functionality. A server has operating system software, data management software and a portion of the network software. 2. Define File server. File Server : File servers manage a work group’s applications and data files, so that they may be shared by the group. File servers are very I/O oriented. They pull large amounts of data off their storage subsystems and pass the data over the network. When the data from the file is requested, a file server transmit all records from the

Cisco Certified Internetwork Expert Expert Level Knowledge and Experience Cisco CCIE Cisco Certified Internetwork Expert (CCIE) is the highest level of technical networking certification offered by Cisco. Put your knowledge and experience to the test. Achieve Cisco CCIE certification and accelerate your career. CCIE is the Industry’s Most Respected IT Certification For over fifteen years, CCIE has identified networking professionals with the highest level of expertise. Less than three percent of all Cisco certified professionals earn their CCIE. Experience is the best preparation for the hands-on CCIE lab exam. CCIE Security Lab Exam Changes to Go Live April 20, 2009 Effective April 20, 2009, important content changes will be implemented in the CCIE Security Lab exams. Candidates for lab exams scheduled April 20, 2009 or later should prepare using the v3.0 Lab Equipment and Software Versions and v.3 Blueprint. Candidates prior to April 20, 2009 should continue using the v