Dear All, 
Many thanks for your response ..
I have issued blow command
# signal-event post-upgrade 
# signal-event reboot 
But my server manager does not work  
 
 (anyway many thanks maykel for your idea)
I'll try Simnux's way to solve this problem..
(although i don't know how, but i'll try.. 
Do you have any other idea ?
Thanks in advance