In Reorg All mode, the utility systematically handles reorganizing each data set until the RECONs are ordered with RECON1 as COPY1, RECON2 as COPY2, and RECON3 as SPARE. To accomplish this action, the utility performs the DBRC command CHANGE.RECON REPLACE, followed by a call to IDCAMS to delete and define the newly discarded RECON data set.

In Reorg All mode, all RECON data sets are involved; therefore, it is important to run the utility when no batch processes are executing and online IMS activity is low. The utility must be able to obtain an exclusive enqueue on each RECON data set to be able to delete and redefine it. Several parameters in the RECON Thresholds/Operational Controls category control how the utility handles RECON contention conditions.