What is MQ in mainframe?
IBM MQ is messaging and queuing middleware, with several modes of operation: point-to-point ; publish/subscribe ; file transfer . Applications can publish messages to many subscribers over multicast . Messaging. Programs communicate by sending each other data in messages rather than by calling each other directly.
What exactly do you know about the MQ Series?
MQ stands for MESSAGE QUEUEING. WebSphere MQ allows application programs to use message queuing to participate in message-driven processing. Application programs can communicate across different platforms by using the appropriate message queuing software products.
What is a MQ process?
The process definition object defines an application that starts in response to a trigger event on an IBM® MQ queue manager. The process definition attributes include the application ID, the application type, and data specific to the application. However, you can change other attributes by using the IBM MQ commands.
What is MQ command server?
The command server is an IBM® MQ component that works with the command processor component. You can send formatted messages to the command server which interprets the messages, runs the administration requests, and sends responses back to your administration application.
What is MQ listener?
A listener is an IBM® MQ process that listens for connections to the queue manager. There are different types of listener available in IBM MQ, depending on the transport protocol that the Message Channel Agent (MCA) uses to send and receive messages through the message channels: LU6. 2.
Is MQ a server?
An IBM MQ server is a queue manager that provides queuing services to one or more clients. All the IBM MQ objects, for example queues, exist only on the queue manager machine (the IBM MQ server machine), and not on the client. An IBM MQ server can also support local IBM MQ applications.
What is AMQZMUC0?
AMQZMUC0. Utility manager. This job executes critical queue manager utilities, for example the journal chain manager. AMQZXMA0. The execution controller that is the first job started by the queue manager.
How do I start command server in MQ?
Use the strmqcsv command to start the command server for the specified queue manager. This enables IBM® MQ to process commands sent to the command queue. You must use the strmqcsv command from the installation associated with the queue manager that you are working with.
What is MQ channel?
A channel is a logical communication link, used by distributed queue managers, between an IBM® MQ MQI client and an IBM MQ server, or between two IBM MQ servers. Channels are used to move messages from one queue manager to another and they shield applications from the underlying communications protocols.
Is MQ a protocol?
The MQ protocol is an outbound/active protocol that can monitor multiple message queues, up to a maximum of 50 per log source. The IP address or host name of the primary queue manager. The default port that is used for communicating with the primary queue manager is 1414.
How are MQSeries used in a mainframe system?
MQSeries in Mainframe In today’s mixed technology trend, the data transfer and dependency of mainframe and open systems with each other is very common. For example, in a telecomm business, telephone numbers can be created and assigned from an open system application whereas still the orders can be logged from legacy applications.
What is the role of a queue manager in MQ?
Ans: A queue is a data structure used to store messages. A queue manager owns each queue. The queue manager is responsible for maintaining the queues it owns, and for storing all the messages it receives onto the appropriate queues. 5. How does MQ support the Integration?
What is the dead letter queue in MQ Series?
Answer: This is a follow question of previous MQ interview question “What is dead letter queue in MQ Series”. As we have seen that dead letter queue is used to store messages which are received for the nonexistent queue. On the other hand, the backout queue is an application-specific queue.
When to use the mqsc command display cfstatus?
Use the MQSC command DISPLAY CFSTATUS to display the status of one or more CF application structures. This command is valid only on IBM MQ for z/OS when the queue manager is a member of a queue sharing group. DISPLAY CFSTRUCT on z/OS Use the MQSC command DISPLAY CFSTRUCT to display the attributes of one or more CF application structures.