FHG Volume: 9 Archives - Page 2 of 12

Message Received, But Not Understood

November 18, 2009 Hey, Ted

I had a problem last week. I was monitoring for error messages after an Add Physical File Member (ADDPFM) command in a CL program. Well, OS/400 sent two CPF messages when ADDPFM failed. MONMSG would only trap the second message, but I wanted to trap the first one because that’s the one that tells me what went wrong. What do I need to do?

–Chris

This seems like a good time to review some messaging fundamentals. Chris is not a newbie programmer, so if he doesn’t understand, there are probably others who don’t understand either.

When a CL command fails,

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More with the WDSc Tasks View

November 18, 2009 Hey, Bruce

Your article of 01/01/05 says you can add tasks to a source member or to specific lines in a source member. In 7.0.0.6, I’m able to do the latter but not the former. Can you point me in the right direction?

–RJS

I haven’t switched to V7 of WDSc yet, but if things are the similar to what they are in V6, then the following should work:

You must be using iSeries Projects perspective and have created a project for your source.
Select (single-click) the source member that you want to add a task for.
In the Tasks View, there

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Enable Row Set Paging in a Client/Server Environment Using SQL

November 11, 2009 Michael Sansoterra

One of the general paradigms of client/server programming is keeping the server side processing “fat” while keeping the client side processing “thin.” That is, a client/server application should let a server do as much work as possible while making as few assumptions as possible about how much processing power, memory, network bandwidth, etc., the client will have. Of course, sometimes certain applications, such as those requiring a graphics intensive environment, must be heavy on the horse power, but in general it’s good practice to keep network, memory, and processing requirements minimal on the client side.

One of the areas where

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The Case of the Used Unused Object: A Mystery

November 11, 2009 Hey, Ted

Put on your deerstalker hat. I’ve got a mystery for you. We are cleaning up disk and stumbled upon something that has us puzzled. The system tells us that a logical file in a test library has been used many times, and according to the object description, was recently used. None of our programs use the file, and no one has used the test library for a long time. Why does the system tell us we’re using a file that we don’t use?

–Rick

Rick and I solved his mystery with a little effort. There’s something to be learned in

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Some Questions on Adopted Authority Programs

November 11, 2009 Hey, Joe

I compiled your PSSWRDCHG program to change user passwords on the fly and modified it with your follow-up information. When we compiled it the normal way, authorized users couldn’t change passwords. We then compiled the program under QSECOFR with the User Profile parameter equal to *OWNER. It worked fine, but doesn’t compiling the program this way allow users with command line access to execute the program?

–Mark

Thanks for writing. This sounds like you have two questions about compiling programs with *OWNER adopted authority.

Does compiling a program with the adopted authority of the QSECOFR user profile allow any

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Enhancing CGIDEV2

November 4, 2009 Paul Tuohy

Maybe “enhancing” is too strong a word, but “Add-Ons for CGIDEV2” doesn’t have the same ring to it. I have always been (and still am) a big fan of CGIDEV2. A tool, such as CGIDDEV2, must be flexible enough to cater for all tastes. But when you have nailed down your own standards and working methods it is sometimes easier to have add-on procedures to implement those standards and working methods.

With that in mind, I want to share a few of the subprocedures I have written that make CGIDEV2 a little easier to use in my development environment. All

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A Quick-and-Easy Way to Convert Case in RPG Programs

November 4, 2009 Ted Holt

Several good ways exist to convert letters from uppercase to lowercase and vice versa. Some take more effort than others. Here’s a very easy RPG method that you may not have seen.

Suppose a four-character program parameter is supposed to have one of three values: edit, post or both. Suppose further that you don’t want case to matter. The user can enter uppercase, lowercase, or mixed-case values. How do you go about testing the parameter in your program?

You could do it the hard way, that is, test for all possible combinations, like this:

 /free
    if inOption = 'edit' or

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Admin Alert: Keeping i5/OS Ethernet Lines Connected

November 4, 2009 Joe Hertvik

Many standard configuration i5/OS Ethernet lines have a common problem. If the line loses connectivity for any reason, the controllers and devices attached to that line will go into a recovery pending state (RCYPND), which requires manual intervention to restart communication. I ran into this problem a few weeks ago and found two solutions for resolving the issue and automatically recovering communications after an outage.

What Happened To My Communications Line?

I experienced this issue when my network services people took down our core network switch for maintenance one Sunday morning, killing Ethernet and TCP/IP connectivity for all network users.

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Getting Started with RDi’s Application Diagram, Part 2: Program Structure Diagram

October 28, 2009 Susan Gantner

In Part 1 of this tip, I talked about getting started with RDi’s Source Call diagram. Now let’s continue on the journey.

I’ll first cover the basics of the second type of diagram, the Program Structure Diagram. Then I’ll cover some notes that apply to both types about customizing, saving, and using your Application Diagrams for your own documentation.

The Program Structure diagram shows relationships between application objects, such as programs that call other programs or reference Service Programs. An example of a very simple Program Structure diagram is shown below.

GRAPHIC1

This diagram shows the relationships between three programs

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Distinguish between Record Types without Indicators

October 28, 2009 Hey, Ted

I have an RPG question. Now that indicators are verboten, how does an RPG program distinguish between record types when reading a multi-format logical file? That is, what do I use instead of record identifying indicators?

–Tricia

Define a file information data structure for the logical file. The system will place the record format name in positions 261-270. Here’s some sample source code to get you started.

CODE1

–Ted

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