Filter
Top Products
Chapter 4. Utility Functions 225
1st ed., 6/30/04 - 312579601
Database Decompile (LIBGEN) Utility
The Database Decompile utility provides a way to generate LIBGEN macro statements
from an existing library control data set.
Prerequisites
The utility runs under the control of the SLUADMIN program and does not require the
HSC to be running.
Reasons for Running the Database Decompile Utility
The following are possible reasons for running the Database Decompile utility to restore
the LIBGEN for a library:
• The LIBGEN for your library has been deleted, lost, or corrupted; you want to
re-create the file to match your library configuration.
• The SET utility is used to change the library configuration stored in the CDS;
consequently, the original LIBGEN no longer matches the CDS.
How the Database Decompile Utility Functions
The utility performs the following processing to create the LIBGEN from the existing
control data set.
• opens the existing control data set and an output data set to hold the recreated
LIBGEN data set
• reads the control data set into buffers and determines validity of the existing control
data set
• locates host IDs generated for the library
• extracts values from the control data set corresponding with LIBGEN macro
parameters and re-creates the output of each LIBGEN macro. The re-creation follows
the same required order as in LIBGEN generation (see ‘‘LIBGEN Macros’’ in the
HSC Installation Guide for information about library generation).
During the re-creation processing, various reads, calculations, and copies are
performed.
• If errors are encountered, appropriate messages are displayed (see the HSC Messages
and Codes Guide for explanations of error messages)
• Upon completion, the output LIBGEN deck is ready for configuration changes and
reassembly for the SLICREAT program (see ‘‘Executing the SLICREAT Program’’
in the HSC Installation Guide for information on data set initialization using the
SLICREAT program).
Database Decompile