I'm starting now by reducing the fetchsize and connections and see how that 
turns out.

Thanks for the help.

Regards,
  Dirk

Von: [email protected] [mailto:[email protected]] Im Auftrag von Andrea 
Aime
Gesendet: Dienstag, 25. Februar 2014 11:29
An: Wilhelm, Dirk
Cc: [email protected]
Betreff: Re: [Geoserver-users] Jave heap space exception on GetFeatureInfo 
request

On Tue, Feb 25, 2014 at 11:17 AM, Wilhelm, Dirk 
<[email protected]<mailto:[email protected]>> wrote:
Hi,

all 6 data stores are configured like this:

max connections 100
min connetions 1
fetch size 1000
Connection timeout 20

Max open prepared statements 50

validate connections, loose bbox and estimated extends are checked

Right, in this case the prepared statement leak does not seem likely, but 
you'll have to do
something to limit your memory usage (see the PDF).
Given the numbers we have, you'd need 100 (conn) * 50 (statement) * 20MB 
(buffer for each statement) -> 100GB
or memory just to keep the prepared statement buffers

Limiting the fetch size and the number of cached prepared statement is a quick 
way to start,
but glancing over the PDF, it seems you'll also have to work on the definition 
of your table.

Alternatively, we could look into implementing a non prepared statement version 
of
the Oracle dialect, which would solve the issue at the root, but that would 
surely require
some days of work

Cheers
Andrea

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