Dispatcher Stopped SAP, How to resolve it

1. Check for Database, if it is up and running or not.
2. Even if the database is running it might be issue with db-application connectivity issue. Check for           R3trans -d connectivity. Log file will be save in path where you have run the command only.
3. Even if the connectivity is OK, Check for listener connectivity between O.S and Db. Enter the command lsnrctl status.
4.      If not, start using 'lsnrctl start'
5. Might be issue with resources not available. Check for processes in task bar in windows and enter command TOP in Linux. Also check for CPU utilization here.