Hi
Mouli
We can do using state manager service for maintain the local state
when you adding the following custom properties in WP state manager service, when the user will login created one cookies and this cookies carry the locale
preprocessors = com.ibm.wps.state.preprocessors.urlmapping.URLMappingPreProcessor,com.ibm.wps.resolver.friendly.preprocessors.FriendlyPreProcessor,com.ibm.wps.resolver.portal.ResolvedPreprocessor,com.ibm.wps.state.preprocessors.selection.StandardPortalSelectionImpl,com.ibm.wps.state.preprocessors.selection.FragmentSelectionImpl,com.ibm.wps.state.preprocessors.selection.ResourceSelectionImpl,com.ibm.wps.state.preprocessors.eclipse.ExtensionPreProcessor,com.ibm.wps.state.preprocessors.portlet.RequestParameterMerger,com.ibm.wps.state.preprocessors.locale.CookieSupportedLanguagePreProcessor
com.ibm.wps.state.preprocessors.locale .CookieSupportedLanguagePreProcessor.cookie.maxage = -1
for more detils please refer following link
Thanks