Still wondering which IBM utility. Even if this forum is an unofficial channel, it's hard to fix an unknown gap.
To reiterate, if you're still on Enterprise COBOL 4.2 (for whatever reasons), make sure the migration PTF (APAR PM85873) is installed in Enterprise COBOL 4.2 and compile with FLAGMIG4. (You must specify FLAGMIG4 since NOFLAGMIG4 is the default.) Pay attention to what FLAGMIG4 throws, if anything. That'll keep you on the straight and narrow for Enterprise COBOL 5.1. Yes, Enterprise COBOL 5.1 often yields significant performance improvements at runtime. That's an excellent reason to recompile with Enterprise COBOL 5.1. But even that reason is not necessarily a reason to recompile everything. If your primary or only goal is enjoying the performance improvement, start by recompiling your most CPU-intensive programs that run at your highest peak utilization times. The Enterprise COBOL 5.1 compiler can now optimize for specific machine model generations, so it's reasonable to assume you ought to recompile more often -- specifically when the earliest model generation where your code might run is upgraded to a newer model -- in order to pick up that next model generation's performance optimizations. The same basic rule applies: focus on the most CPU-intensive programs that run at your highest peak utilization times. -------------------------------------------------------------------------------------------------------- Timothy Sipples IT Architect Executive, zEnterprise Industry Solutions, AP/GCG/MEA E-Mail: [email protected] ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
