Configuring JCL statements and procedures
To use IMS Database Recovery Facility, you must configure appropriate JCL and PROCLIB members for your environment.
The master address space is the main address space that drives IMS Database Recovery Facility and related processes. The recovery sort subordinate address space is used to sort log records and perform recovery processes.
The majority of the DD statements that are required for running in the subordinate address spaces are dynamically allocated and passed from the master address space to the recovery sort subordinate address space, the IMS Index Builder and DFSPREC0 address space, and the address space for the Build Index function of FPA.