Is there any script to be used to enable agssom, where should it be placed ? Can anyone please provide me the steps to do this, Thanks
What version of ArcGIS Server are you using? There is a utility and scripts that us AGSSOM for I think 10.0 and earlier. If 10.1+, you would want to use the AGS admin toolkit
Downloadable tools for ArcGIS Server administration | ArcGIS Blog
http://www.arcgis.com/home/item.html?id=12dde73e0e784e47818162b4d41ee340#!
This toolkit can easily be used with python scripts/tools. For example, I am using parts of the toolkit samples to query only those services that are currently running, checking to see if they use the fgdb I need to update, shut those down, update the fgdb, and then start just those services back up. So you can make it stop/start all, or you can do some filtering and stop/start from a list, etc.
edit:
Also look at the other threads on this same or similar subject (in no particular order):
Stopping/Starting ArcGIS services using Python
AGSSOM 10.1 with ArcGIS Server 10.0?
SOLUTION: Using AGSSOM in python to start/stop AGS 10.0 services