This section describes the effects of the software product ACS (Alias Catalog Service) on HSMS. ACS is a subsystem of BS2000 and is designed for managing the aliases of BS2000 files and job variables. An alias is a substitute file or job variable name chosen virtually at will by the user.
The system administrator must start the ACS subsystem before aliases can be used. In addition, an alias catalog that unequivocally defines the correlation between aliases and file or job variable names must be generated for the current task.
HSMS accepts aliases in the FILE-NAMES or JV-NAMES operand of the HSMS statements concerned. Aliases are also accepted for the names of directory files.
Internally, HSMS uses only file or job variable names from the catalog and no aliases. For this reason, only file names are written into the HSMS request file and the ARCHIVE checkpoint file.
Any attempt to change an alias after an HSMS statement has become effective is ignored. This also applies to changes attempted before an interrupted request is resumed.
In reports, the alias appears in the user statement part; the file or job variable name is output in the result part.
For more information on aliases and administrating the alias catalog, see the section “ACS” in the “Introductory Guide to DMS” [4].