I'm not sure if I got my original question answered. We've enabled
CA-Reclaim on the dataset, but I what I wanted to know does a repro back
into the original dataset using the replace and reuse options, enable
CA-Reclaim on all CA's, or do I need to reallocate the dataset?
Mark Jacobs
Staller, Allan <mailto:[email protected]>
February 12, 2015 at 9:12 AM
According to the fine manual, if CA-Reclaim is enabled globally (in
IGDSMS00), you can alter the cluster to enable CA-Reclaim;
From AMS Commands( Rel 2.1) SC23-6846-01:
<quote>
RECLAIMCA|NORECLAIMCA
Specifies the CA reclaim attribute of a key-sequence data set (KSDS).
RECLAIMCA
Specifies that the DASD space for empty control areas (CAs) will be
reclaimed so that it can reused for that KSDS.
CA reclaim cannot reclaim space for:
v Partially empty CAs
v Empty CAs that already existed when CA reclaim was enabled
v CAs with RBA 0
v CAs with the highest key of the KSDS
v Data sets processed with GSR.
NORECLAIMCA
Specifies that the DASD space for empty control areas (CAs) will not be
reclaimed.
You can disable CA reclaim at the system level with the IGDSMSxx member of
PARMLIB or with the SETSMS command. This does not change CA reclaim
attributes in the catalog.
For more information, see the topic about reclaiming CA space in z/OS
DFSMS
Using Data Sets.
</quote>
HTH,
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Mark Jacobs - Listserv <mailto:[email protected]>
February 11, 2015 at 11:27 PM
We have a VSAM KSDS that was allocated and populated with data prior
to the CA/Reclaim function being available. This evening we had to
reorg the dataset, and the REPRO back used the same physical dataset
with the REPLACE and REUSE options.
Does this enable CA/RECLAIM for the dataset, or do we have to allocate
an entirely new KSDS?
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