DALRLS specifies the VSAM record-level sharing (RLS) protocol to
be used with a VSAM data set. For more information about using RLS,
see z/OS DFSMS Using Data Sets.
When you code DALRLS, # and LEN must be 1, and PARM contains one
of the following:
- X'80'
- NRI (DALNRI) No read integrity
- X'40'
- CR (DALCR) Consistent read
- X'20'
- CRE (DALCR) Consistent read explicit
Example: The following code specifies that an application
program can ensure that records read by a unit of recovery are not
changed by other units of recovery until the reading unit of recovery
issues a syncpoint:
KEY # LEN PARM
801C 0001 0001 20