Specifying INSTRUCTION with the EXECUTE, VERIFY, or PREPARE parameters
causes recovery of the instruction data set, if it exists. If the
instruction data set does not exist when INSTRUCTION is specified,
an informational message is issued and ARECOVER processing continues.
When the INSTRUCTION parameter is specified and DFSMShsm ascertains
that an instruction data set has been backed up, the following instruction
and activity log file information is determined:
- If the DATASETNAME and VOLUMES parameters are used with the ARECOVER
command, the control file is read to determine which volume serial
numbers the instruction/activity log file resides on.
- If the DATASETNAME and XMIT parameters are used with the ARECOVER
command, a check is made to ensure that the instruction/activity log
file is cataloged.
Note: If installations use a utility to
convert their existing aggregate backup output files from one tape
technology to another, ensure that the newly created tapes are catalogued
at the recovery site with the newly created unit name and volume serial
number, and use the XMIT parameter on the ARECOVER command. The XMIT
parameter ensures that ARECOVER processing retrieves the allocation
information for the ABARS files from the catalog rather than using
the volser and unit stored on the control file tape.
- If the parameter AGGREGATE is used with the ARECOVER command,
a check is made to ensure that the instruction/activity log file is
cataloged.
If the instruction data set exists on an output tape, DFSMSdss
is invoked to perform the RESTORE of the instruction data set onto
a level 0 volume from the ARPOOL. If the instruction data set currently
exists, it is replaced.
If the recovery of the instruction data set fails, or if the INSTRUCTION
parameter is specified and there is no instruction data set on the
output tape, a message is issued and processing continues.