Re: Forcing use of cursor for large result sets

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От
Kris Jurka
Тема
Re: Forcing use of cursor for large result sets
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Pine.BSO.4.56.0406070248120.29634@leary.csoft.net
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Forcing use of cursor for large result sets "Brian G. Huber" <brianghuber@yahoo.com>
Re: Forcing use of cursor for large result sets Kris Jurka <books@ejurka.com>


On Sun, 6 Jun 2004, Brian G. Huber wrote:

> Hello all - 
> 
> I am attempting to force the use of a cursor for a resultset.  I have
> tried both forward-only and scrollable statements and am setting fetch
> size to 100 with a call to setFechSize(100) on the statement.  However,
> I do not think a cursor is being used because the entire result set is
> trying to cache, resulting in an outofMemoryError.  I am using
> pg74.213.jdbc3.jar with 7.4.2.
> 

Two additional restrictions in the current driver are that you must be in 
a transaction by setting setAutoCommit(false) and that the query in 
question be a single sql statement.  The single statement test is a bit 
naive, so a semi-colon in the query string will make it think it is a 
multi-statement query.

Kris Jurka
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От: Kris Jurka
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От: Kris Jurka
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