Using dummy transient data queues

You can direct output to a dummy transient data queue when the data does not need to be saved.

About this task

An indirect transient data queue (TDQ) cannot be enabled or disabled at run time. If the data is not required, it can be redirected to a dummy TDQ. You create a dummy TDQ by specifying DSNAME(DUMMY) when defining the TDQ. See TDQUEUE attributes. You can redirect the queue permanently or temporarily.

For example, you do not want the audit messages which are directed to the CADS queue.

To redirect the queue permanently, change the definition of the CADS queue in the DFHDCTG group to redirect it to the dummy queue. The change takes effect when CICS® is restarted.

To control redirection without restarting:
  1. Move the definition of the CADS queue from the DFHDCTG group to a user-defined group.
  2. Change the definition of the CADS queue to redirect it to the dummy queue
  3. Install the customized queues
  4. When the queue is needed, use CEDA to install CADS in group DFHDCTG