The RELOAD command is used to restart PDS Compress processing for a single specific data set after a system failure occurred during a PDS Compress execution. For example, if a system failure had occurred during a PDS Compress execution and the data set being compressed at the time of the failure had been scratched, reallocated, and was in the process of being reloaded, this procedure would restart the reload process to recover the PDS.
If the system failure occurred during the processing of unloading the PDS to the work data set, there is no need to use the reload command because the original data set is intact. To determine where the compress was interrupted, see the CA Disk message listing. A copy-back started message is printed before each data set compressed message. If a copy-back started message is not followed by a successful compression message, the RELOAD has not completed successfully, and the RELOAD function must be run to recover the data set.
Note: A target data set for the RELOAD must be pre-allocated with the proper DCB attributes. The DCB attributes are printed in the reload starting message as a source of reference.
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