Program structure
The program structure of DB Historical Data Analyzer is described separately for the MVS™ batch environment and TSO/ISPF environment.
MVS batch environment
DB Historical Data Analyzer consists of one load module (FABGHIST).
Export Utility
Export Utility consists of FABGXEXP and several load modules. Export Utility runs as a batch job. FABGXEXP is the first program that runs in the job step.
TSO/ISPF environment
DB Historical Data Analyzer consists of several ISPF panel modules, message modules, and two load modules (FABGPANL and FABGGRAF).
FABGP000 is the first panel module invoked by TSO/ISPF ISPSTART command to start the dialog with DB Historical Data Analyzer. The two load modules, FABGPANL and FABGGRAF, are called during the dialog. FABGGRAF invokes ICU to generate and display the HD Analysis graph.