z/OS DFSMSdfp Advanced Services
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ACCESS: Request Information from Index Space Maps or the VTOC

z/OS DFSMSdfp Advanced Services
SC23-6861-01

ACCESS=MAPDATA
Obtains data from index space maps or free space DSCBs.
The following data is available from the index space maps:
  • The number of format-0 DSCBs (the data is obtained from the VTOC map of DSCBs)
  • The number of unallocated VIRs in the index (the data is obtained from the VTOC index map)
  • The number (and location) of extents of unallocated pack space (the data is obtained from the VTOC pack space map).
The following data is available from nonindexed VTOCs:
  • The number (and location) of extents of unallocated pack space.
Parent topic: CVAFDSM Macro Overview and Specification

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