Embedding a Portlet in Theme :

 Add the below code in Portal-Normal.vm

<div class="lang-bar">
                        $velocityPortletPreferences.setValue("portlet-setup-show-borders", "false")
                        #set($sampleLanguageTranslatorPortletId = "languagetranslator_WAR_sampleportlet")
                        $theme.runtime($sampleLanguageTranslatorPortletId ,"", $velocityPortletPreferences.toString())
                        $velocityPortletPreferences.reset()
                    </div>

languagetranslator_WAR_sampleportlet =  portletId value get it from Database Portlet table

select * from Portlet.