Hi Ravindra,
Yes you can definitely go for system copy and it will help you but then lot of manual activities will also be required.
Instead of that you can check that y your services have been stopped.
1.you can do cache refresh
2.you can do java engine restart.
3.you can do full cache refresh.
4.full pi server restart.
5.start /stop of java service in nwa.
it might work for you else,can you can copy 
Regards
Naveen