Oh yes i have tried restartin but nothing more happened what do you think ? Do i have to uninstall ASA and then re-install it? I am really not in a favour to do so but i would do it if i am sure it will work OK
The question is what exactly did change on this network/machine. You mentioned the subnet changed, if the IP of the machine is still the same, it may simply not be reachable at all within that network.
But I reckon the IP address of the machine has also changed? My guess would then be that ASA is still configured to listen on the old IP address.
Again I'm a little less knowladgable in ASA, but with ASE you specify in the sql.ini file on which connections ASE listens. Normally you would configure this as localhost,5000 and machinename,5000 with the result that at startup it will bind to 10.0.0.127 (local only) and whatever the IP of the machine is at startup.
But it is also possible the IP address is set there and if the IP of the machine changes, ASE no longer listens correctly and will not accept incoming connections.
Again I am not sure if ASA works similarly or not. I don't use it often enough for that.