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Message channel agents

 

A channel can only be started on a channel initiator if it has access to a channel definition for a channel with that name. A channel definition can be defined to be private to a queue manager or stored on the shared repository and available anywhere (a group definition). This means that a group defined channel is available on any channel initiator in the queue-sharing group.

The private copy of the group definition can be changed or deleted.

To create group channel definitions, use the WebSphere MQ commands (MQSC) as shown in the following examples: 

DEFINE CHL(QSG.TO.QM2) CHLTYPE(SDR) +
TRPTYPE(TCP) CONNAME(QM2.MACH.IBM.COM) +
XMITQ(QM2) QSGDISP(GROUP)
DEFINE CHL(QM2.TO.QSG) CHLTYPE(RCVR) TRPTYPE(TCP) +
QSGDISP(GROUP)

There are two perspectives from which to look at the message channel agents used for distributed queuing with queue-sharing groups:

 

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