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The DQM channel control function

 

The channel control function provides the interface and function for administration and control of message channels between WebSphere MQ for iSeries and compatible systems. See Figure 1 for a conceptual picture.

The channel control function consists of WebSphere MQ for iSeries panels, commands, programs, a sequence number file, and files for the channel definitions. The following is a brief description of the components of the channel control function:

• Channel definition files are created in the following subdirectories:

  • /QIBM/UserData/mqm/qmgrs/../auth/channels

  • /QIBM/UserData/mqm/qmgrs/../auth/channels/&mangled

  • /QIBM/UserData/mqm/qmgrs/../auth/clntconn

  • /QIBM/UserData/mqm/qmgrs/../auth/clntconn/&mangled

  • /QIBM/UserData/mqm/qmgrs/../channels

  • /QIBM/UserData/mqm/qmgrs/../clntconn

• The channel commands are a subset of the WebSphere MQ for iSeries set of commands.

  Use the command GO CMDMQM to display the full set of WebSphere MQ for iSeries commands.

• You use channel definition panels, or 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

• Sequence numbers and logical unit of work (LUW) identifiers are stored in the synchronization file, and are used for channel synchronization purposes.

 

Parent topic:

Monitoring and controlling channels on iSeries

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