Hi,
The first step should always be to check the scm-server-0.log file in the sepm\tomcat\logs folder.
Also check the catalina.out logfile. It may contain info if there is a port conflict on the server.
In the scm-server-0.log, you will find the error in the line, just before the indentation changes!!
Also, f you have upgraded the SEPM, then you will have upgrade.log . That log is extremely useful in case of troubleshooting Java 01 in SEP SBE 12
Please post the error message from the logs above, and then we can decide the steps ahead.
Cheers,
Aniket