it is pretty simple way is...
java weblogic.Admin -url adminserver:port -username user -password passwd CLUSTERSTATE -nameofthecluster
After changing myself to a WLA middleware server-bender, this new AVATAR have many responsibilities on my shoulders. Everything is need to be controlled with my middleware skills those I am sharing with a Smart WLA (You). I have made my own ways of monitoring and leverage many automated tasks, each of them with powerful shell scripting skills on Sun-Solaris, Linux.