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Showing posts with label COBOL compiler options. Show all posts

Showing posts with label COBOL compiler options. Show all posts

Sunday, 11 August 2013

COBOL Performance Tuning: Compiler Options and Runtime Tips

A COBOL batch job that runs for four hours rarely has one magic fix. The slow part may be a table search inside a million-record loop, ...

COBOL ARITH Compiler Option: COMPAT vs EXTEND with Decimal Examples

A COBOL program that adds packed decimal amounts all night can fail or slow down because of a compile option chosen years earlier. The ...

COBOL DATA Compiler Option: DATA(24), DATA(31), and 16 MB Storage

A COBOL batch program can run out of below-the-line storage long before the machine is short of memory. The DATA compiler option helps dec...

COBOL NUMPROC Compiler Option: PFD, NOPFD, and MIG Migration

A payroll program can compare two packed decimal fields correctly for years, then fail after one upstream file starts sending a non-pre...

COBOL OPTIMIZE Compiler Option: OPT(0), OPT(1), OPT(2)

OPT(2) tells IBM Enterprise COBOL to apply its highest documented optimization level to the generated object program. That setting can...

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