Symbolic fields related to VSAM parameters have additional capabilities. By default, symbolic names evaluate the data associated with the cluster component of a VSAM file. To force the evaluation of a particular component of the VSAM file, prefix the symbolic name with one of the following:
C:- clusterD:- dataI:- index
For example, the following expression can be used to evaluate the name of the data component.
IF &D:DSNAME = *ACCIVP*When no component is specified, ACC and SRS default to the cluster component.
During compare processing or message build, the product will automatically attempt to access the data component fields when the cluster field is not available. No attempt to substitute the data component is made when C: is explicitly specified.
During SET processing, the D: and I: suffixes are required to update fields associated with the data and index components of a VSAM file.
Note: The ACCVSAM option must be enabled before ACC will work with VSAM parameters. Likewise, the SRSVSAM option must be enabled before SRS will work with VSAM parameters.