Programming Interface Information

MVS Installation Exits

Table 1 describes MVS™ installation exits used for either system-managed or non-system-managed data.

Table 1. MVS Installation Exits
Name Usage
IEFDB401 MVS Dynamic Allocation Exit:
  • Enforce allocation standards.
  • Called prior to ACS services execution; therefore, action taken in this exit must be designed considering your ACS routines' logic.
IGGDASU2 and IGGDARU3 Installation-Replaceable Module:
  • Called before processing the DADSM request for SCRATCH and RENAME.
  • If you have written your own IGGO3ODU or IGGO29ODU modules, update these modules for the DFSMS environment.
End Programming Interface Information