Rob Wunderlich writes:
>z/OS DB2 tends to lag behind Windows in function. Check which
>version you are running on z/OS compared to the Windows version.

Just to expand on what Rob is saying, if you're running an older version of
DB2 for z/OS, then Rob's concerns likely apply.

However, a lot has changed concerning DB2 for z/OS in the past couple
versions. If you draw a Venn diagram, there's mostly overlap, but the area
outside DB2 z/OS (and inside DB2 Linux/UNIX/Windows) has gotten smaller
(and continues in that direction), and the area outside DB2 LUW (and inside
DB2 z/OS) has been getting a bit bigger lately. There are a lot of reasons
for these trends, but that's a topic for another thread.

There's a great bit of documentation, "SQL Reference for Cross-Platform
Development," which I would recommend for developer audiences. You can find
it here:

http://www.ibm.com/developerworks/db2/library/techarticle/0206sqlref/0206sqlref.html

Hopefully this book will get updated for DB2 Version 9 very soon, but the
DB2 V8 guide is quite valuable. I think every developer who writes code
that accesses databases should have a copy of this book close by.

As a general rule with WebSphere applications, it's not too hard to
redirect them from using DB2 V8 LUW (or earlier) to using DB2 V8 for z/OS.
Or V9 to V9 (and often even V9 to V8). Yes, it's something you want to
think about and plan, but, "in general," it's not a particular challenge.

Actually, I think in an earlier thread I alluded to the fact that
mainframes measure and monitor, and that alone can be a shock for
developers with code that hasn't been previously measured and monitored. If
the code and/or database-related logic is inefficient, you can still run
it, but the mainframe will tell you exactly where it is inefficient. And
that alone can be a blow to many developer egos. :-) Just make sure you
understand and prepare for the psychology involved there. :-)

- - - - -
Timothy Sipples
IBM Consulting Enterprise Software Architect
Specializing in Software Architectures Related to System z
Based in Tokyo, Serving IBM Japan and IBM Asia-Pacific
E-Mail: [EMAIL PROTECTED]
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