Hi everyone,

I have a development, test and production databases (They are on HP-UX 11.0
with Oracle 8.1.7.4). The development and test databases are setup for Multi
Threaded Server (MTS) and production is not (We are still considering
whether or not to put it on production, another story). But during the
normal day, code is built, changed and tuned. I don't have any particular
example, but some of the code that works fine in development and test works
very differently in production. The data that exists in development and test
is comparable to what is in production. The only difference I see is that
development and test are using MTS and production is not.

The questions I see are: Would mts affect explain plans of queries to such a
degree that they would run differently in a non MTS database? Does the
optimizer care whether mts is being used?

TIA,

Bryan Rodrigues
DBA
Elcom, Inc.


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