Restrictions when using RLS

When you use RLS mode, several restrictions apply to VSAM cluster attributes and to runtime options.

Be aware of these restrictions:

  • The VSAM cluster attributes KEYRANGE and IMBED are not supported when you open a VSAM file.
  • The VSAM cluster attribute REPLICATE is not recommended because the benefits are negated by the system-wide buffer pool and potentially large CF cache structure in the storage hierarchy.
  • The AIXBLD runtime option is not supported when you open a VSAM file because VSAM does not allow an empty path to be opened. If you need the AIXBLD runtime option to build the alternate index data set, open the VSAM data set in non-RLS mode.
  • Temporary data sets are not allowed.