Re: Java Batch

On May 5, 11:22 pm, Robert <n...@[EMAIL PROTECTED]
> wrote:
> On Mon, 5 May 2008 10:30:13 -0700 (PDT), Pakku <pa...@[EMAIL PROTECTED]
>
wrote:
> >And in this link here
>
>http://groups.google.com/group/bit.listserv.ibm-main/browse_thread/th...
> >he says
> >"Changing platforms is always much harder and much more expensive than
> >most
> >can imagine. For most, rewriting their application suite is
> >prohibitively
> >costly. Almost all migrations from a mainframe platform to any client
> >server
> >model have been expensive disasters. "
>
> Changing the platform, say from mainframe to Unix server, does not
require a rewrite, it
> requires a recompilation. It is not true that "almost all migrations ...
have been
> expensive disasters."  I've worked on a few dozen migrations that went
smoothly, and am
> aware of hundreds of others. I've never worked on a migration that was
abandoned. The only
> expensive disasters were to IBM salesmen's commissions.
>
> The Micro Focus Cobol compiler is VERY compatible with IBM mainframe
Cobol. It is common
> for programs to compile and run on Unix without a single change being
required. Rewriting
> JCL into shell script is easy because JCL has very little logic.
Basically it lists
> programs and their files, if any. Utilities such as sorts and SQL tools
have one-for-one
> equivalents e.g. there is a Unix version of SyncSort.

I think you speak rather glibly here...I don't have much experience
but know of at least one project- to convert from the 3rd millennium
version of a hardware platform to the 9th millennium version of the
same hardware that is months behind and beacoup bucks over.  Part of
it had to do with a proprietary dbms but not all.
Oddly enuff Net Express is the development tool involved!

But attempts at conversions get bogged down with changed business
specifications.  As soon as system users hear there is going to be a
conversion they want all these new requirements to be incor****ated-
kind of like "While you are  in there making this change, why not make
this additional teensy change as well" that most programmers know
about!