Restarting the J2EE Server 

...

       1.      Open the SAP Management Console, which should be available on your Windows desktop; otherwise execute

mmc.exe “<windows-dir>\SAPMMC.MSC”

       2.      Expand the tree view at <SAPSID>

       3.      If all nodes are green, open the context menu on <SAPSID>, select “Stop”, and wait until all nodes are gray.

The server has been stopped.

       4.      If all nodes are gray, open the context menu on <SAPSID> and select “Start”

       5.      Wait until all nodes are green.

The server has been started.