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2. A date and time field (time stamp).<br />
For output queues with SEQ(*JOBNBR) specified, the date and time that the job<br />
which created the spooled file entered the system are the date and time field.<br />
(A sequential job number is also assigned to the job when it enters the system.)<br />
For output queues with SEQ(*FIFO) specified, the date and time field is set to<br />
the current system date and time when any of the following occur:<br />
v A spooled file is created by opening a device file.<br />
v The output priority of the job which created the spooled file is changed.<br />
v The status of the spooled file changes from RDY to HLD, SAV, OPN, or CLO;<br />
or the status changes from HLD, SAV, OPN, or CLO to RDY.<br />
v A spooled file is moved to another output queue which has SEQ(*FIFO)<br />
specified.<br />
3. The SCHEDULE parameter value of the spooled file.<br />
<strong>File</strong>s with SCHEDULE(*JOBEND) specified are grouped together and placed<br />
after other spooled files of the same job that have SCHEDULE(*IMMED) or<br />
SCHEDULE(*FILEEND) specified.<br />
4. The spool number of the file.<br />
Because of the automatic sorting of spooled files, different results occur when<br />
SEQ(*JOBNBR) is specified for an output queue than when SEQ(*FIFO) is<br />
specified. For example, when a spooled file is held and then immediately released<br />
on an output queue with SEQ(*JOBNBR) specified, the file will end up where it<br />
started; but if the same file were held and then immediately released on an output<br />
queue with SEQ(*FIFO) specified, the file would be placed at the end of the<br />
spooled files which have the same priority and a status of RDY.<br />
Using multiple output queues<br />
You may want to create multiple output queues for:<br />
v Special forms printing<br />
v Output to be printed after normal working hours<br />
v Output that is not printed<br />
An output queue can be created to handle spooled files that need only to be<br />
displayed or copied to a database file. Care should be taken to remove<br />
unneeded spooled files.<br />
v Special uses<br />
For example, each programmer could be given a separate output queue.<br />
v Output of special <strong>IBM</strong> files<br />
You may want to consider separate queues for the following <strong>IBM</strong>-supplied files:<br />
– QPJOBLOG: You may want all job logs sent to a separate queue.<br />
– QPPGMDMP: You may want all program dumps sent to a separate queue so<br />
you can review and print them if needed or clear them daily.<br />
– QPSRVDMP: You may want all service dumps sent to a separate queue so the<br />
service representative can review them if needed.<br />
Output queue recovery<br />
If a job that has produced spooled files is running when the job or system stops<br />
abnormally, the files remain on the output queue. Some number of records written<br />
Chapter 5. Working with spooled files 155
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