Monitor and controlling channels on UNIX, Linux, and Windows

For DQM you need to create, monitor, and control the channels to remote queue managers. We can control channels using commands, programs, IBM MQ Explorer, files for the channel definitions, and a storage area for synchronization information.

We can use the following types of command to control channels:

The IBM MQ commands (MQSC)

We can use the MQSC as single commands in an MQSC session in UNIX, Linux , and Windows systems. To issue more complicated, or multiple, commands the MQSC can be built into a file that you then run from the command line. For details, see MQSC commands. This section gives some simple examples of using MQSC for distributed queuing. The channel commands are a subset of the IBM MQ Commands (MQSC). We use MQSC and the control commands to:

• Create, copy, display, change, and delete channel definitions
• Start and stop channels, ping, reset channel sequence numbers, and resolve in-doubt messages when links cannot be re-established
• Display status information about channels

Control commands

We can also issue control commands at the command line for some of these functions. For details, see IBM MQ control commands reference.

Programmable command format commands

For details, see PCF commands.

IBM MQ Explorer

On Linux and Windows systems, we can use the IBM MQ Explorer. This provides a graphical administration interface to perform administrative tasks as an alternative to using control commands or MQSC commands. Channel definitions are held as queue manager objects.

Each queue manager has a DQM component for controlling interconnections to compatible remote queue managers. A storage area holds sequence numbers and logical unit of work (LUW) identifiers. These are used for channel synchronization purposes.