[GIS] How to increase Java heap size on GeoServer on Windows

geoserverjavamemorywindows

I tried setting wrapper.java.maxmemory=1300 parameter in c:\Program Files (x86)\GeoServer 2.11.1\wrapper\wrapper.conf but I can't set more than 1300MB (geoserver service can't start).
I tried configure Java with -Xmx2048m, for example, command line argument but it ignored.
How to increase max heap size up to 8GB, for example?
Problem is than the GeoServer can't generate big rasters or kmz's on GetMap operation. Maximum about 500MB.

Best Answer

With 32-bit Java the theoretical maximum is 2 GB and in practice less. For big rasters it is absolutely best to use 64-bit Java.

I see that you have installed your GeoServer with the Windows installer to run as a Windows service. Unfortunately that installation option does not work with 64-bit Java. At least you can make it to work by installing GeoServer from the binary zip and start the server manually. If your system does not select 64-bit Java automatically you can either set it with JAVA_HOME environment variable or then you can edit the startup.bat and point it to use 64-bit Java.

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GeoServer – Avoiding Java Out of Heap Space Error

I've had the same error message on a Windows Server with GeoServer using Jetty. After some research I found the file C:\Program Files (x86)\GeoServer 2.10.1\wrapper\wrapper.conf where I edited these two lines:

# Initial Java Heap Size (in MB)
wrapper.java.initmemory=16

# Maximum Java Heap Size (in MB)
wrapper.java.maxmemory=128

Seems to have done the trick...

I found a hint to this file here: http://osgeo-org.1560.x6.nabble.com/Geoserver-heap-size-permgen-space-configuration-td5145590.html

[GIS] GeoServer – Show Maps in a Application Java

Short answer: yes, you can display a WMS generated map in a desktop app.

Longer answer: It depends, at it's simplest a WMS map (what GeoServer sends you) is just an image generated by a get request to a well known URL scheme. So any app which can request URLs can display WMS maps (so in principal any Java app should be able to do it). However the WMS specification is quite long and complicated and the resulting URLs are quite long and complicated, and as your viewer moves around the map or zooms in and out the URL changes in subtle ways. There are various exciting failure modes in WMS which you will need to watch out for.

So my advice would be to go with GeoTools which provides you with a framework for making WMS requests and for handling drawing maps on the screen (and handling projections etc).

Best Answer

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