Most discussions about architecture make little, if any,
reference to it. And yet, it can have a great impact on your performance. The
network is the most important but the least visible component of the R12
architecture. The connection links themselves can vary from slow-speed dial-up
connections to high-speed fiber optic channels.
For
example, you can have a fast PC running on an R12 instance with a good
applications tier and a clustered database tier, but still end up with bad
results. If you are using a slow connection either directly from that machine
(for example, a dial-up connection) or a shared connection with considerable
traffic (a corporate T-1 line that already has considerable bandwidth usage),
then you can experience poor performance. This problem cannot be attributed to
a tier because it is a network-related issue.
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