ARCCBEXT: Control Data Set Backup Installation Exit

You can use the control data set backup exit (ARCCBEXT) to perform the following tasks:

Identify the data mover that backed up the control data sets and the journal.
Merge all tape backup copies onto fewer tapes.
Define RACF profiles to protect the tapes that contain the backup versions.
Ensure control data set integrity by scheduling a job to examine the structural consistency of the control data sets. You can import the backed up data sets to temporary or renamed data sets, and then call the IDCAMS EXAMINE command to ensure that the control data sets are structurally consistent.
Improve performance by scheduling a job to copy the control data sets and journal from DASD to tape. First, back up your control data sets and journal to DASD in parallel. Later, with this exit, copy your control data sets and journal from DASD to tape.
Save the list of volume serial numbers that are associated with each backup data set. You can also get a list of volume serial numbers by calling catalog services (outside of the exit) because the backup data sets are cataloged by DFSMShsm when it finishes the backup.

Always perform the batch-type exit functions, such as copying data sets, within a batch environment. To run the exit functions in a batch environment, you must open an internal reader and submit JCL to the internal reader. You can then build the JCL with the data passed by the control data set backup function.