I bet this is a common question among ADF developers who wish to have their own favicon for their page
Please follow the steps to achieve the same
add the following facet to the af:document tag of your adf page
<af:document id="d1"> .. .. .. <f:facet name="metaContainer"> outputText escape="false" value='png" href="#{facesContext.externalContext.requestContextPath}/favicon.ico">' id="o1"/> </f:facet> </af:document>
please note that the favicon specified in the value attribute in the outputext should be in the root-level of your web application