oracle kill the running job

Problem: There are regular job execution has been completed, but it has been running the state: 

Process: 
View of the running job and the corresponding sid numbers:
 the SELECT  *  from DBA_JOBS_RUNNING; 

 the session information query corresponding to: 
 the SELECT sid, Serial # from v $ the session WHERE SID in ( ' 458 ' ); 
kill corresponding to the session: 
ALTER System the kill the session ' 458,16551 ' ; 
added: 
execute the following job is set to the command directly Borken, longer run: 
EXEC DBMS_JOB.BROKEN ( 225 , TRUE); - set to false, it will continue to run.