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Spooling library<br />
Work management associated with the QSPL subsystem is similar to that for other<br />
subsystems as described in the Work <strong>Management</strong> book. To control the storage used<br />
on your system see “Spooling library”.<br />
The spooling library (QSPL) contains database files that are used to store data for<br />
inline data files and spooled files. Each file in library QSPL can have several<br />
members. Each member contains all the data for an inline data file or spooled file.<br />
When the spooled file is printed or deleted, its associated database member in the<br />
spooling library is cleared of records, but not removed, so that it can be used for<br />
another inline data file or spooled file. If no database members are available in<br />
library QSPL, then a member is automatically created.<br />
Printing a spooled file or clearing an output queue does not reduce the number of<br />
associated database members. If an excessive number of associated database<br />
members were created on your system (for example, if a program went into a loop<br />
and created thousands of spooled files), the spool database members use storage<br />
on the system even if you clear the output queue.<br />
Because the system keeps the date and time whenever a database member becomes<br />
available (for example, clearing of records after the spooled file has been printed or<br />
deleted), you can remove these spooled database members in the following ways:<br />
v QRCLSPLSTG system value<br />
When this system value is set, the system removes spool database members that<br />
have been available for more than the number of days specified by the system<br />
value. The default value is 8 days. Values that can be set for this system value<br />
are:<br />
– 1-366: Valid range of day values that can be set. When an available member is<br />
older than the set number of days, it is removed by the system.<br />
– *NOMAX: Available spool database members are never automatically<br />
removed. The user must use the Reclaim Spool Storage (RCLSPLSTG)<br />
command to remove these members.<br />
– *NONE: The database member is removed as soon as the spooled file is<br />
printed or deleted.<br />
Note: If *NONE is specified, you will never have available database members<br />
in QSPL. If there are no available members when subsequent inline<br />
data files or spooled files are created, the system creates members and<br />
allocates storage to be used. This slows down the jobs that are creating<br />
inline data files or spooled files. It is highly recommended that the<br />
system value never be set to *NONE.<br />
v RCLSPLSTG command<br />
Removes available database members that have been cleared of records for more<br />
than the number of days specified on the command. The command will run<br />
until it completes in the user’s process.<br />
The procedures previously described are the only allowable ways to remove<br />
spooled files from the QSPL library. Any other way can cause severe problems. It is<br />
best to keep the QSPL library small by periodically deleting old spooled files with<br />
Chapter 5. Working with spooled files 167
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