Welcome to the IBM Rational PL/I community. Here you will find the latest technical and business information, and educational information about PL/I and related z/OS and AIX topics including IMS, CICS, and Rational Developer for System z.
Check out all the information about the latest release of Enterprise PL/I for z/OS. You can
get a summary of the release as well as all the announcement details.
See what's new with Enterprise PL/I for z/OS, V4.2 including enhancements to leverage the latest z/OS. For all the details about the Enterprise PL/I for z/OS, V4.2 announcement, see I BM Enterprise PL/I for z/OS V4.2 delivers performance improvements and usability enhancements.
Check out all the information about the latest release of PL/I for AIX. You can get a summary of the release as well as all the announcement details. See what's new with PL/I for AIX V3.1 including enhancements to leverage the latest POWER7 hardware and interoperability with the latest middleware. For all the details about the PL/I for AIX, V3.1 announcement, see IBM PL/I for AIX , V3.1 delivers support for the latest IBM POWER7 Systems architecture as well as many functional improvements and usability enhancements .
Check out all
the information about the latest release of Enterprise PL/I for z/OS.
You can get a summary of the release as well as all the announcement
details. See what's new with Enterprise PL/I for z/OS, V4.3 including enhancements to
leverage the latest z/OS. For all the details about the Enterprise
PL/I for z/OS, V4.3 announcement, see IBM Enterprise PL/I for z/OS V4.3 delivers performance improvements and usability enhancements . ... [More]
The history of PL/I stretches back to the 1970s when IBM, at the prompting of the SHARE user group, delivered the first PL/I compiler so that users would have a language with the combined strengths of Fortran and COBOL. IBM then delivered three releases of OS PL/I Version 2 in the 1980s and PL/I for MVS and VM in the early 1990s. All of these releases were based on a common code base that gradually became old, plus both hard and expensive to enhance and maintain.
However, with the advent of the PC, IBM built a completely new PL/I compiler... [More]
At times, it is useful to be able to tailor the compiler to meet the needs of your organization. For example, you might want to suppress certain messages or alter the severity of others. You might want to perform a specific function with each compilation, such as logging statistical information about the compilation into a file. A compiler user exit handles this type of functions. With PL/I, you can write your own user exit or use the exit provided with the product, either 'as is' or slightly modified depending on what you want to do... [More]
Peter Elderon from the IBM compiler development team will be presenting on what's new in Enterprise PL/I for z/OS at SHARE in Anaheim, March 9 to 14. 15284: PL/I - What's New Register for SHARE in Anaheim today!
PL/I Compilers are now live on the Request for Enhancement (RFE)
Community. It is a great place where you can collaborate with
development teams and other product users. Our development team will
review your RFE and provide status updates throughout its lifecycle. Here is links to the Community : PL/I RFE Looking forward to hearing from you.
FREE newsletter - get IBM Software news, special #PowerSystems features - subscribe: http ://b it.l y/rs 1rZn #POWER7 We just published a special Power Systems Edition of the newsletter, which you can see here - http ://w ww-1 48.i bm.c om/t ela/ webm ail/ NlDy nami cPag e/95 40/3 2113 /cos meti c?we b_pa ge_i d=54 6427 & pre=0 - and we're also including Power Systems-related content in each monthly issue.
This blog entry is the first of two articles that will provide some guidance on how to work
with DB2 large objects (LOBs) in PL/I. They both refer to the 'pliclob.pli' file in the PL/I Cafe 'Files'
section for samples of actual code.
One way to use LOB data from a DB2 table is to declare a host variable
large enough to hold all of the LOB data. This requires your program to
allocate large amounts of storage and requires DB2 to move large amounts
of data. This can be inefficient or impractical.
Or you can use LOB locators and LOB... [More]
Today, IBM announced Enterprise PL/I for z/OS V4.4 and z/OS XL C/C++ 2.1. At SHARE in Boston , being held August 11-16, Visda Vokshoori , from the IBM compiler development team, will present the following sessions about these latest PL/I and C/C++ compilers for z/OS. Session 13789: What's New in Enterprise PL/I and C/C++ will discuss all of the new features of the new compiler versions. Enterprise PL/I for z/OS 4.4 features discussed will include: Improved performance of PL/I applications Improved exploitation of zEC12 and zBC12... [More]
Check out this demo showing how to code PL/I to interface with AIX. Using the Power systems sandbox, you can try PL/I for AIX and create a network application in PL/I. Optimize server performance and programmer productivity with IBM
compilers Network application in PL/I: networking, system APIs
Under the old OS PL/I and PL/I for MVS compilers, all extents (i.e. bounds and string lengths) for STATIC variables
and for BASED variables (not using REFER) had to be optionally signed integers. This made it hard to parameterize your
code (unless you used the macro preprocessor and then your listing would look much different than your source).
With Enterprise PL/I however, extents are required only to be what are known as "restricted expressions", i.e. expressions
that the compiler can reduce to a constant at compile time, and... [More]
There are three, perhaps overlooked, new features of Enterprise that let you "compile out" code either
unconditionally or conditionally:
To cause the compiler to skip some code unconditionally, you could try to enclose it in comments. But this works
only if that code itself contains no comments. However, as of the 3.9 release, you can enclose code
in %DO SKIP; ... %END; , and then the compiler will unconditionally skip over the enclosed code.
To cause the compiler to skip over some code conditionally, you can enclose it in a... [More]
PL/I has complex rules for how structures are mapped and for when padding is inserted.
However, it can be important to know when there is padding in a structure (for example,
if you pass that structure to a program compiled by a language, such as C or COBOL,
that may map the structure differently).
With Enterprise PL/I 4.1, if you specify the new NOPADDING suboption to the compiler's
RULES option, the compiler will issue an E-level message for any structure that contains
RULES(NOPADDING) is also useful in detecting... [More]