What are MQI channels?

An Message Queue Interface (MQI) channel connects an IBM® MQ MQI client to a queue manager on a server machine, and is established when you issue an MQCONN or MQCONNX call from an IBM MQ MQI client application.

What is IBM MQ MQI?

An IBM MQ MQI client is a component that allows an application running on a system to issue MQI calls to a queue manager running on another system. The output from the call is sent back to the client, which passes it back to the application.

What is MQI client?

An IBM® MQ MQI client is a component of the IBM MQ product that can be installed on a system on which no queue manager runs. Using an IBM MQ MQI client, an application running on the same system as the client can connect to a queue manager that is running on another system.

How do I identify MQ client connections and stop them?

MQ client applications can connect to a queue manager through a transport type of “client”, instead of “bindings”. WebSphere MQ runmqsc, MQ Explorer and SupportPac MS6B (chstat script) can be set to identify connections of this type, and stop them.

Where can the MQI client be installed?

The MQI is available to applications running on the client platform; the queues and other IBM MQ objects are held on a queue manager that you have installed on a server. An application that you want to run in the IBM MQ MQI client environment must first be linked with the relevant client library.

What is channel name in IBM MQ?

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 objects that provide a communication path from one queue manager to another.

How does MQ connection work?

MQ simply stands for Message Queue. You would use one when you need to reliably send a inter-process/cross-platform/cross-application message that isn’t time dependent. The Message Queue receives the message, places it in the proper queue, and waits for the application to retrieve the message when ready.

How do I see how many connections I have in MQ?

The show mq-connections command shows connection information for queue managers. The name of the queue manager configuration. The total number of established connections by the queue manager. This value is the sum of active connections and idle connections.

How do I check my MQ client connection?

Diagnosing The Problem

1. Make sure you have a Queue manager running and a Listener running on the MQ server. Note what port the listener is listening on, the default is port 1414.
2. Run the telnet command.
3. Additional MQ connection test.

What is server channel in MQ?

A server channel is a message channel that the queue manager uses to send messages to other queue managers. To send messages using a server channel, you must also create, on the other queue manager, a receiver channel with the same name as the server channel. You can also use server channels with requester channels.

How do you create an MQ channel?

Creating the message channel using MQ Explorer

1. In the Navigator view, expand the queue manager QM_APPLE that you created earlier.
2. Right-click the Channels folder, then click New > Receiver Channel. The New Receiver Channel wizard opens.
3. In the Name field, type QM_ORANGE.QM_APPLE.
4. Click Finish.

What is queue channel?

Channels. Channels are objects that provide a communication path from one queue manager to another. Channels are used in distributed queuing to move messages from one queue manager to another and they shield applications from the underlying communications protocols.

What is MQ protocol?

The MQ protocol is an outbound/active protocol that can monitor multiple message queues, up to a maximum of 50 per log source.

How do I connect to MQ?

Read the topic Configuring connections to IBM MQ. Ensure that the required queue manager has been created on the IBM MQ server. Ensure that the user ID that is running the integration node has the necessary permissions to access the queue manager. Decide how you want to connect to the queue manager.

What is sender and receiver channel in MQ?

A sender channel is a message channel that the queue manager uses to send messages to other queue managers. To send messages using a sender channel, you must also create, on the other queue manager, a receiver channel with the same name as the sender channel.

How do I create a new channel in mqsc?

Use the MQSC command DEFINE CHANNEL to define a new channel, and set its parameters. You can issue this command from sources 2CR. For an explanation of the source symbols, see Using commands on z/OS®. For CLUSSDR channels, you can specify the REPLACE option only for manually created channels.

What is the intended disposition of the channel?

The intended disposition of the channel is as a shared channel associated with a specific queue manager. The intended disposition of the channel is as a shared channel. This parameter does not apply to channels with a channel type ( CHLTYPE) of CLNTCONN, CLUSSDR, or CLUSRCVR.

How does IBM MQ work with TCP/IP channels?

If you define a channel with a channel type ( CHLTYPE) of CLUSRCVR that is using TCP/IP, IBM MQ generates a CONNAME for you. It assumes the default port and uses the current IPv4 address of the system. If the system does not have an IPv4 address, the current IPv6 address of the system is used.

How do I use channel affinity in queue manager?

Table 1. DEFINE and ALTER CHANNEL parameters Use the channel affinity attribute when client applications connect multiple times using the same queue manager name. With the attribute, you can choose whether the client uses the same client channel definition for each connection.