The PARTIAL RELEASE attribute specifies whether DFSMShsm space
management processing releases unused allocated space in physical
sequential, partitioned, and extended format VSAM data sets. The default
for PARTIAL RELEASE is NO. The other options are YES and CONDITIONAL.
CONDITIONAL means to release the space only if there is a nonzero
secondary allocation quantity.
Note: - The CONDITIONAL option applies only to physical sequential and
partitioned data sets. If specified for an extended format VSAM data
set, it will be processed as if YES were specified.
- The PARTIAL RELEASE attribute does not apply to normal migration
and recall processing.