Fermat,

It sounds like you're going to need to do some customer education, perhaps
gently. Ask the appropriate people for help if you need it. Fix their
underlying problems. Help solve your customer's true business pains.

Just to give you yet another data point, I recall hearing about a company
in the Midwestern United States that asked for an estimate if they did the
reverse: took their database off the mainframe (DB2) and moved it to
Oracle. (The principle is the same, though.) Which you can do -- many
things are technically possible, given enough time and money thrown at the
problem. (Though with a decrease in quality of service delivery of course.)
By the way, Oracle just reported good corporate financial results largely
as a result of higher support contract payments.

Anyway, there was a careful technical study undertaken to determine the
impacts. The study determined that, yes, this could be done, and yes, DB2
CPU would indeed fall to zero. (If you remove all DB2, there's no DB2 CPU
consumption.) Unfortunately z/OS and CICS CPU consumption would triple,
just by introducing a wire between applications and data in that particular
environment. That's even before considering the fact that Oracle certainly
is not free to buy and even less free to operate. And, in this particular
case, there was no sync/replication between databases, which is yet another
potential quagmire. (Replication is perfectly respectable when
appropriately used, but replication typically guarantees that any business
process spanning both applications/databases becomes a batch-oriented
business process -- whether or not the business really requires an
online/"real time" process with accurate and current data.)

The customer decided their idea was a bad idea, the opposite of their
business goals.

- - - - -
Timothy Sipples
IBM Consulting Enterprise Software Architect
Based in Tokyo, Serving IBM Japan / Asia-Pacific
E-Mail: [email protected]
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