Because the System i can run at redline speed all day long . . .
IBM plans to ship its next release of i5/OS -- V6R1 -- in early 2008. With this new release, IBM says it will require the conversion of all programs created under previous releases that use the i5/OS Machine Interface (MI). The conversion will upgrade and refresh programs to take advantage of the latest system enhancements, including upgraded system integrity, improved performance, and a range of new operating system and processor capabilities, IBM says. The company has posted a conversion Q&A site online as well as a new Redpaper Draft titled "i5/OS Program Conversion: Getting ready for i5/OS V6R1."
Basically, even though program conversion is something you've got to pay attention to, IBM is downplaying the scope, saying an "upgrade" or "refresh" is more descriptive of the process. The last time the System i world saw a similar conversion was in 1995 when customers upgraded from 48-bit to 64-bit addresses, though a change also occurred in 1988 in the move from System/38 to AS/400.
"This conversion will be simpler than previous ones. Most other types of objects are not changing this time, for example. Program conversions should also be much faster this time," IBM reports.
Here's a more detailed snip from IBM:
In order for a program to be converted, its creation data (sometimes referred to as observability) must be available. Programs created for V5R1 or later automatically retain creation data sufficient for conversion. Clients and ISVs with programs created for OS/400 V4R5 and earlier need to ensure that creation data is available for the conversion process.
IBM will provide the Analyze Object Conversion (ANZOBJCVN) tool for i5/OS V5R3 and V5R4 to help you plan for program conversion. This tool helps you identify potential conversion difficulties, if any, and estimates the time required for program conversion.
In addition, the transcript to iSociety's "Getting Ready for V6R1" fireside chat with IBM's Paul Godtland, held in September, offers some program conversion nuggets plus some other V6R1 planning concerns.
FYI: I'm working on nailing down an interview with IBM to tease out a bit more detail and perspective on the issue, so if you have any special questions to ask, post them here and I'll add them into my interview notes.
Posted by cmaxcer at November 1, 2007 8:27 AM

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