...
urlPrefixChannel=http://demo.ideasoft.biz/o3-parts-blaze-web
urlPrefixUploadFiles=http\://demo.ideasoft.biz
urlPrefixPortal=http\://demo.ideasoft.biz
urlPrefixExist=http\://demo.ideasoft.biz
<o3>/liferay/tomcat/webapps/eportal/WEB-INF/classes/portal-ext.properties
...