RE: [Easy400Group] ILE RPG or RPG/400

Fri, 17 Feb 2006 11:45:11 -0800

My two cents:  It’s very easy to go from RPG III to RPG IV by using the OS/400 command CVTRPGSRC.  There are at times some considerations (activation groups, etc.) but for “simple” applications, you should run every RPG III program through CVTRPGSRC when new maintenance is required on it.  And for the S/36 shops (running on an AS400 or iSeries), you can make (usually) simple changes to RPG/36 programs to get them to RPG III “compileablilty” (if there is such a word), run that source through CVTRPGSRC and compile as RPGIV, and still run them with S/36 OCL.

 

This will work “as is” with an RPG IV ILE program if the file names in the program are the same as the file names on disk:

 

// LOAD PGMNAME

// RUN

 

This will work if the file names are different (don’t get hung up on QS36F – it’s just a library like any other):

 

// LOAD PGMNAME

// FILE NAME-PGMNAME,LABEL-DISKNAME

// RUN

 

This is not a 100 percent solution, and is not intended as a reason to stay S/36, but if you need it, it works, as with a lot of things, where used appropriately.  In any case it’s an easy way to at least get started in the right direction.

 

Bruce Henke

Systems Group Inc.

Itasca, IL

 

 

-----Original Message-----
From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Chet
Sent: Friday, February 17, 2006 11:07 AM
To: [email protected]
Subject: RE: [Easy400Group] ILE RPG or RPG/400

 

I have clients that are hanging onto RPG II and OCL tooth and nail.  It meets there current business needs so who am I to tell them otherwise.  There are more out there than most realize which is why all of us will always have plenty of work.

 

From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Jon Paris
Sent: Friday, February 17, 2006 11:29 AM
To: [email protected]
Subject: RE: [Easy400Group] ILE RPG or RPG/400

 

Sorry Chet - but my experience, IBM's and most users I have talked to says that RPG IV outperforms RPG III under most all circumstances.  Plus it has optimization options (including execution profiling based optimization) that are in a different league to that available for RPG III.

 

As to your " ... have no need ... " - do you really think there is anybody in that category?  Admittedly there are shops who _believe_ that.  The realization that such features really were needed after all comes at about the same time that the staff are informed that the iSeries is being replaced!!

 

Jon Paris 

 

From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Chet
Sent: Friday, February 17, 2006 8:49 AM
To: [email protected]
Subject: RE: [Easy400Group] ILE RPG or RPG/400

Depends on the environment, if strictly an RPG shop and have no need for the additional features then go that route “strictly” from a performance stand point.  But if you shop needs to do CGI, and utilize all the features plus modular coding ability of ILE then that is the route to go.  Personal recommendation is ILE, too many goodies to pass up so why live in the past.

 

 



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