diff --git a/examples/osgterrain/osgterrain.cpp b/examples/osgterrain/osgterrain.cpp
index 126839b2a..ca1db5935 100644
--- a/examples/osgterrain/osgterrain.cpp
+++ b/examples/osgterrain/osgterrain.cpp
@@ -244,6 +244,9 @@ int main(int argc, char** argv)
         osgDB::Registry::instance()->setReadFileCallback(new CleanTechniqueReadFileCallback());
     }
 
+    bool setDatabaseThreadAffinity = false;
+    unsigned int cpuNum = 0;
+    while(arguments.read("--db-affinity", cpuNum)) { setDatabaseThreadAffinity = true; }
 
     // load the nodes from the commandline arguments.
     osg::ref_ptr<osg::Node> rootnode = osgDB::readNodeFiles(arguments);
@@ -294,6 +297,16 @@ int main(int argc, char** argv)
     // add a viewport to the viewer and attach the scene graph.
     viewer.setSceneData( rootnode.get() );
 
+    // if required set the DatabaseThread affinity, note must call after viewer.setSceneData() so that the osgViewer::Scene object is constructed with it's DatabasePager.
+    if (setDatabaseThreadAffinity)
+    {
+        for (unsigned int i=0; i<viewer.getDatabasePager()->getNumDatabaseThreads(); ++i)
+        {
+            osgDB::DatabasePager::DatabaseThread* thread = viewer.getDatabasePager()->getDatabaseThread(i);
+            thread->setProcessorAffinity(cpuNum);
+            OSG_NOTICE<<"Settings affinity of DatabaseThread="<<thread<<" isRunning()="<<thread->isRunning()<<" cpuNum="<<cpuNum<<std::endl;
+        }
+    }
 
     // run the viewers main loop
     return viewer.run();