Browse Prior Art Database

Automatic Definition of VSAM Catalogs and Datasets

IP.com Disclosure Number: IPCOM000034416D
Original Publication Date: 1989-Feb-01
Included in the Prior Art Database: 2005-Jan-27
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Andersen, WW: AUTHOR

Abstract

A program is disclosed which makes defining catalogs and datasets under the virtual storage access method (VSAM) an easy and quick job. The tasks that are performed by this program are: verifying the format of the specified disk, determining the type and size of the disk, generating a VSAM unique catalog name, calculating the catalog and dataspace sizes, defining the catalog, and defining and initializing VSAM datasets. Successful processing with this program reduces these tasks from more than hour of work to only a few minutes for a disk. This program is used after the preliminary formatting of the disk is completed using the DOS disk formatting facility which makes the disk ready for VSAM catalog and dataset definitions.

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Automatic Definition of VSAM Catalogs and Datasets

A program is disclosed which makes defining catalogs and datasets under the virtual storage access method (VSAM) an easy and quick job. The tasks that are performed by this program are: verifying the format of the specified disk, determining the type and size of the disk, generating a VSAM unique catalog name, calculating the catalog and dataspace sizes, defining the catalog, and defining and initializing VSAM datasets. Successful processing with this program reduces these tasks from more than hour of work to only a few minutes for a disk. This program is used after the preliminary formatting of the disk is completed using the DOS disk formatting facility which makes the disk ready for VSAM catalog and dataset definitions. A product administrator inputs to the program the userid that is assigned to the VSAM disk and the disk address. The program may be stopped at this point by entering a null or the word quit. When a specified userid and disk address is given, the disk is linked and accessed. If the link and access is successful, the format of the disk is checked to determine that the disk is correctly formatted as a VSAM disk. If the disk is correctly formatted, the program proceeds via system commands, by getting the disk volume identifier (volid) and the disk device type and size. This information is used by the program to calculate the catalog and dataspace sizes for the specific device type of the disk and f...