[ https://issues.jboss.org/browse/RF-3878?page=com.atlassian.jira.plugin.sy... ] Patrick Decat commented on RF-3878: ----------------------------------- Reading the RichFaces 3.3 source code, I noticed it adds 1 to both numberOfLogicalViews and numberOfViewsInSession parameters: {code:title=https://source.jboss.org/browse/RichFaces/tags/3.3.4.Final/framework/impl/src/main/java-jsf12/org/ajax4jsf/application/AjaxStateHolder.java?hb=true#to86} 86 instance = new AjaxStateHolder(numbersOfViewsInSession, 87 numbersOfLogicalViews); {code} and: {code:title=https://source.jboss.org/browse/RichFaces/tags/3.3.4.Final/framework/impl/src/main/java-jsf12/org/ajax4jsf/application/AjaxStateHolder.java?hb=true#to53} 52 private AjaxStateHolder(int capacity, int numberOfViews) { 53 views = new LRUMap<String, LRUMap<String, StateReference>>(capacity+1); 54 this.numberOfViews = numberOfViews; 55 } {code} and: {code:title=https://source.jboss.org/browse/RichFaces/tags/3.3.4.Final/framework/impl/src/main/java-jsf12/org/ajax4jsf/application/AjaxStateHolder.java?hb=true#to173} 171 // TODO - make size parameter configurable 172 viewVersions = new LRUMap<String, StateReference>( 173 this.numberOfViews+1); 174 views.put(viewId, viewVersions); {code} Therefore, I went one step further down and set both values to zero, effectively reaching a single view state: {code} <context-param> <param-name>com.sun.faces.numberOfLogicalViews</param-name> <param-value>0</param-value> </context-param> <context-param> <param-name>com.sun.faces.numberOfViewsInSession</param-name> <param-value>0</param-value> </context-param> {code} That definitively breaks the back button support, but it saves lots of megabytes for us, dividing by 4 the peak per session memory usage... -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira