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  • Date-Handling in CL Procedures

    January 19, 2005 Ted Holt

    The code for this article is available for download.

    A common saying is, “It’s the little things that get you.” The maxim was certainly true recently in one iSeries shop. I may not have all the details exactly right, but it seems nobody was able to pry any information out of the computer. Investigation revealed an unanswered message to QSYSOPR and a queue of jobs eagerly waiting for a chance to run. Apparently, the unanswered message owed its existence to the fact that some human being had entered an invalid date value into a prompt screen.

    My impression is

    …

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  • Extracting Zoned and Packed Decimal Values from Character Fields

    January 19, 2005 Hey, Ted

    I have a physical file that includes a large alphanumeric field that is defined differently for many different record types. I am creating logical files for each of the record types and must redefine this large field in different ways for different record types. For some of the record types the field contains packed decimal values. How do I define a substringed field (one created with the SST keyword in DDS) as packed decimal?

    –Mary

    Your situation is not unusual, especially in shops that use packaged software. Since developers can’t foresee everything users may have to store, they sometimes include

    …

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  • Admin Alert: More on Preparing for OS/400 V5R1 to V5R3 Upgrades

    January 19, 2005 Joe Hertvik

    In my last column, I started documenting my experiences in upgrading a multi-partitioned OS/400 V5R1 machine to the i5/OS V5R3 operating system (which IBM also refers to as OS/400 V5R3). I covered several pre-installation tasks you need to perform, including retrieving installation manuals, reviewing any third-party software, and obtaining V5R3 PTFs. This week, I’ll discuss some other important prep items that affect how long your upgrades will take, and what to do after the upgrade is complete.

    Use the Installation Manual

    As I mentioned last time, make sure you download and thoroughly study IBM’s installation manual for OS/400 V5R3,

    …

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