You can use one of the following subparameters of the RLS parameter
to specify a read integrity option for a VSAM data set.
- NRI
- Specifies no read integrity (NRI). The application can read
all records.
- CR
- Specifies consistent read (CR). This subparameter requests that
VSAM obtain a SHARE lock on each record that the application reads.
- CRE
- Specifies consistent read explicit (CRE). This subparameter
requests serialization of the record access with update or erase of
the record by another unit of recovery.
CRE gives DFSMStvs access to VSAM data sets open for input
or output. CR or NRI gives DFSMStvs access to VSAM recoverable data
sets only for output.