Hi Mallick, Try setting"maxHttpHeaderSize" for the <Connector/> in your server.xml. Its default value is 8192 bytes. I guess you're exceeding this limit.
i.e. <Connector executor="tomcatThreadPool" port="8080" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" maxHttpHeaderSize="{Something greater than 8192}"/> More details/exact info: http://tomcat.apache.org/tomcat-7.0-doc/config/http.html#Standard_Implementation Best Regards, Martin