Explanation: EXECUTE | VERIFY | PREPARE are
mutually exclusive, required parameters specifying whether aggregate
recovery or error checking is performed or an ABR record is created.
EXECUTE specifies that DFSMShsm perform aggregate
recovery.
VERIFY specifies that DFSMShsm should only
verify the aggregate recovery configuration. No data sets will be
recovered. Verification determines if errors or data set conflicts
exist.
PREPARE specifies that an ABR record should
be created without further verification processing or data movement
if it does not already exist at the recovery site.
When PREPARE is specified, and an ABR record already exists for
the specified aggregate group version and all the associated ARECOVER
input files are properly cataloged, a message is issued and the PREPARE
function ends. If the ABR record already exists but one or more associated
files are not cataloged, a message is issued for each file that is
not cataloged, the ABR record is deleted (with an accompanying message),
and the PREPARE function continues.
During ARECOVER processing, when VERIFY or PREPARE is specified,
messages are issued indicating the amount of storage required to perform
a successful aggregate recovery. The amounts of L0, ML1, and ML2
storage required are retrieved from the ABR record and displayed separately
along with the combined total storage requirement.
Note: - Issue the ARECOVER VERIFY command to determine the storage requirements
for data movement prior to issuing the ARECOVER EXECUTE command, and
ensure that sufficient storage space is available. Refer to the text
below for storage requirement information when using the VERIFY parameter.
- If the ABR record does not exist at the recovery site when EXECUTE
or VERIFY is specified on an ARECOVER DATASETNAME(controlfiledsn)
command, the ABR record is created at the recovery site and EXECUTE
or VERIFY processing continues.
- You must specify either EXECUTE, VERIFY, or PREPARE when DATASETNAME
or AGGREGATE is specified.
- If PREPARE is specified with the AGGREGATE parameter, INSTRUCTION,
ACTIVITY, or both parameters must also be specified.
Defaults: None.