Oracle 12.2 will, if the "new features" articles are to be believed,
introduce sharding. Sharding is a technique from the "shared nothing"
world. The way this is implemented in MongoDB, which is the only
reference implementation that I know of, is to have several different
databases, each containing a portion of the data, and running a part of
the SQL, which will later be combined into the result.
However, this introduces the "shared nothing" clustering, sort of DPF in
the DB2 world. How does that get along with the RAC philosophy? In
addition to NUMA systems like Solaris T5, now we will have sharding, yet
another technology that competes with RAC. I wonder about RAC and how is
it positioned. Obviously, cloud doesn't lend itself to RAC. So, what is
the future of the RAC? Are we looking at the end of the RAC era?
Regards
--
Mladen Gogala
Oracle DBA
Tel: (347) 321-1217
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