Home

 

Synchronization queue

 

Shared channels have their own shared synchronization queue called SYSTEM.QSG.CHANNEL.SYNCQ, which is accessible to any member of the queue-sharing group. (Private channels continue to use the private synchronization queue. See Synchronization queue) This means that the channel can be restarted on a different queue manager and channel initiator instance within the queue-sharing group in the event of failure of the communications subsystem, channel initiator or queue manager. (See Shared channel recovery for details.)

DQM with queue-sharing groups requires that a shared queue is available with the name SYSTEM.QSG.CHANNEL.SYNCQ. This queue must be available so that a group listener can successfully start.

If a group listener fails because the queue was not available, the queue can be defined and the listener can be restarted without recycling the channel initiator, and the non-shared channels are not affected.

Make sure that you define this queue using INDXTYPE(MSGID). This will improve the speed at which they can be accessed.

 

Parent topic:

Components

ic15430_

 

Home