Roope,

> Date: Wed, 26 Sep 2012 10:53:15 +0300
> From: roope.te...@fmi.fi
> To: geoserver-users@lists.sourceforge.net
> Subject: [Geoserver-users] postgis connection limit and performance
> 
> Hello
> 
> We have a setup with about 100 image mosaic data stores which all use 
> postgis database. At the moment every data store have maximum  5 
> connections. Now we have a problem with too many connections to the 
> database. Does anyone have any experience, is it safe to decrease 
> connections to 1 per store or does it affect to the performance?
Don't think this is a good option.Have you configured connections using 
jndi?http://docs.geoserver.org/stable/en/user/tutorials/tomcat-jndi/tomcat-jndi.html
Are you using a connection 
pool?http://docs.geoserver.org/stable/en/user/data/database/connection-pooling.html
It is highly recommended to use a connection pool which may help you to reuse 
open connections.
Cheers,Carlo
> 
> best regards
> Roope
> 
> 
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