On Mon, Apr 7, 2014 at 3:11 PM, daniel.soneira <[email protected]>wrote:
> Hello GeoServer community,
>
> I've spent quite some time (all of last week) investigating a performance
> problem regarding our mapping application built on top of GeoServer /
> OpenLayers.
> The memory consumption grew as time went by and never recovered / declined
> anymore to the point where the operating system began to swap which
> resulted
> in a really poor performance.
> The log entry 'rendering takes >60 sec, aborting..' came up in shorter
> intervals and at some point the server just didn't respond anymore.
>
> To find the reason for that I've used different servers (Tomcat / WebLogic)
> and even different JVMs (HotSpot / JRockit).
> A heap dump didn't really show anything extraordinary, but looking at some
> other data the native memory part was suspicious.
> As it turns out the culprit seems to be the OCI drivers (or their usage).
>
> The problem can be observed by using the built-in Layer Preview feature
> (just moving around the map - panning / zooming in and out is sufficient).
> As soon as I switch to Thin-Driver the application performs better and the
> memory stays within some sensible boundaries (after some initial climbing).
>
> Since the usage of OCI is mandatory for our customer the Thin-Driver option
> is unfortunately not possible.
>
> I guess Oracle is not the preferred database in the GeoServer community and
> OCI is even less used to access it but has anyone some experience in
> dealing
> with such a situation nontheless?
>
You might want to have a look at this discussion:
http://osgeo-org.1560.x6.nabble.com/Jave-heap-space-exception-on-GetFeatureInfo-request-tp5105467p5105726.html
Cheers
Andrea
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Ing. Andrea Aime
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