RLSE is a TSO command that releases unused DASD space allocated
to datasets.
It is located in File #300 of the #249 version of the CBT tape and is part of a
collection of TSO commands from Jim Marshall of the Air Force. It was
originally written by Bill Godfrey at the Planning Research Corporation in
November of 1978.
Installation
The jobstream to assemble, the
link-edit, and install the help text - rlse$.jcl - is contained in the archive rlse.tgz
[MD5: 6577C469CD5555C798EE4F88F44BCCE5].
Download the archive and extract the jobstream (WinZip on Windows/?? or tar on
Linux). Submit the jobstream to assemble and link the single load module
for RLSE into SYS2.CMDLIB and copy the help text into SYS2.HELP. If you don't have
SYS2.CMDLIB defined, you
will need to modify the jobstream to specify a different target load library.
Also if you do not have SYS2.HELP defined, you may modify the jobstream to place
the help information into SYS1.HELP.
Utilizing RLSE
The help text for RLSE is really all that is required to understand and use
the command:
Function -
The RLSE command is used to free up unused space from anexisting dataset.
Syntax -
RLSE'dataset-name'LEAVE('tracks')EXTENTS
REQUIRED - 'dataset-name'
DEFAULTS - all unused tracks are released if neither'LEAVE'
nor 'EXTENTS' is specified.
ALIAS- none
Operand -
'dataset-name'- Specifies the name of the dataset which
is to have its unused space released.
LEAVE('tracks') - 'tracks' is the number of unused tracks
not to be freed.
EXTENTS - This keyword indicates that only unused secondary
extents are to be freed. The primary extent and
any partially used secondary extents are not freed
even if they contain unused space.This keyword and
LEAVE are mutually exclusive.
Example -
rlse jay001.format.loadlib
2 TRACKS RELEASED FROM DATA SET JAY001.FORMAT.LOADLIB
I hope that you have found my instructions useful. If you have
questions that I can answer to help expand upon my explanations and examples
shown here, please don't hesitate to send them to me:
