[mapserver-users] MapServer Oracle performance

Michael Shishcu micklesh at gmail.com
Thu Aug 27 11:45:31 PDT 2009


Hi everyone.

I did some research and found a strange thing. Hope I'm wrong, but...
It seems to me that when mapserver fetches data from the database, all
parameters for where clause of the query string (for example coordinates for
MDSYS.SDO_ORDINATE_ARRAY() procedure) are string literals and not oracle's
bind variables. This forces the DB to "hard parse" every query from
mapserver. But hard parse of the query is very CPU intensive process, so
data fetching is slower than it could be.
Can anyone confirm this, and if so, is there a workaround of such a problem?

Regards, Michael
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