The DQ (Default Queue) command designates a specific queue as the system default queue. This queue is used for jobs that do not specify a queue.
It is not essential to have a default queue. If none exists, the system puts each job in the lowest queue whose limits can accommodate it. When the system creates a new JOBDESC file, it retains the previously-defined default queue.
For more information about job queue processing, refer to the following commands: MQ (Make or Modify Queue), PQ (Purge Queue), QF (Queue Factors), SQ (Show Queue), and UQ (Unit Queue).
Syntax

Explanation
DQ
Displays the current default queue.
DQ −
Voids the current default queue specification.
DQ <queue number>
Assigns a new default queue specification.
Examples
Example 1
On a system without a currently defined default queue, the command DQ 999 establishes queue 999 as the default queue. The system response confirms the action.
DQ 999
THE DEFAULT QUEUE IS 999
Example 2
This example shows a query about the default queue number and the system response.
DQ
THE DEFAULT QUEUE IS 999
Example 3
This example changes the default queue value established in Example 1 as 999 to 77. The system response confirms the change.
DQ 77
THE DEFAULT QUEUE HAS BEEN CHANGED FROM 999 TO 77
Example 4
This example cancels the default job queue specification that currently is queue 8.
DQ -
DEFAULT QUEUE CANCELED (8)