The work queues are as follows:
The disk queue table (DQT) contains message controls for all CA 7 Online and batch terminals.
The scratch queue contains messages for terminals and provides space for CA WA CA 7 Edition scratch work files.
Organization:
All CA WA CA 7 Edition queues are allocated as physical sequential data sets with a block size of 1024 bytes. Access to these files, however, is through the CA WA CA 7 Edition queue access method, which uses a technique of dynamic track allocation. These queues must be allocated as permanent and unmovable below cylinder 65,536 with the following DCB attributes:
DCB=(DSORG=PSU,RECFM=F,LRECL=1024)
Note: The scratch and disk queue table (DQT) queues can be allocated as temporary data sets specifying UNIT=VIO. The messages are now kept in the database and are retained across a WARM start. Messages are reformatted when CA WA CA 7 Edition is restarted using TYPE=ERST.
Space Requirements:
Specific space requirements are based on an IBM 3390 unless otherwise specified. The space allocations for each queue must be contiguous and unmovable. The following space values are only recommendations for a starting point. The values can require changes later. The command /DISPLAY,Q=ALL or the CA WA CA 7 Edition Queue Allocation Usage report can be used to monitor the space use. Allocate none of the queues with less than three tracks.
Allocate 2 tracks per terminal for the first 50 terminals that are defined in the initialization file. If more than 50 terminals are defined, allocate 1 track for each terminal over 50.
Each queued message uses at least one track in the scratch queue. Allocate a minimum of 300 tracks. High terminal activity can require that you increase this number.
The DQTQ and SCRQ are used by track. Therefore, if 400 tracks are allocated on a 3380-type device, then 400 tracks would also be required to move the queue to a 3390-type device.
DASD Restrictions:
CA WA CA 7 Edition queues and the checkpoint data set must reside on the same device type.
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