Re: Execution from java - slow

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От Albe Laurenz
Тема Re: Execution from java - slow
Дата
Msg-id D960CB61B694CF459DCFB4B0128514C2084EFBF1@exadv11.host.magwien.gv.at
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Ответ на Execution from java - slow  (Jayadevan M <Jayadevan.Maymala@ibsplc.com>)
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Jayadevan M wrote:
> I have a plpgsql function that takes a few seconds (less than 5) when
executed  from psql. The same
> function, when invoked from java via a prepared statement takes a few
minutes. There are a few queries
> in the function. Out of these, the first query takes input parameters
for filtering the data. It is
> this query which takes a long time when the procedure is invoked from
java. To ensure that the query
> does use actual values (and not bind variables) for optimization, we
used
>
> execute
> '
> select x.col_type_desc,x.acc_id,acc_svr from (.....
> '
> using d_from_date,d_to_date
>
> It did not help. Any suggestions? It is from_date and to_date on which
data gets filtered. We are
> using the same values for filtering, when we execute it from java/psql

Use the auto_explain contrib with
auto_explain.log_nested_statements=on
to see the statements that are really executed
and compare!

Yours,
Laurenz Albe


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