Thomas Kellerer wrote on 17.07.2010 18:29:
Want to do some experiments?
Apparently there *is* a substiantial overhead, but I suspected the
sending of the raw SQL literal to be a major factor here.
(Server and JDBC program were running on the same machine)
In case any one is interested.
Out of curiosity I ran the same test with a local Oracle installation (10.2)
and there the overhead is substantially lower (for 20 columns, only 2% slower,
compared to 26% with Postgres)
I can't run something equivalent to explain analyze in Oracle from within JDBC,
so I could not compare those figures. But it seems that either the parsing
overhead in Oracle is lower or the JDBC driver is more efficient...
Regards
Thomas
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