How to find and kill the DBMS jobs running

select job_name, session_id, running_instance, elapsed_time, cpu_used
from dba_scheduler_running_jobs;

JOB_NAME SESSION_ID RUNNING_INSTANCE
------------------- ---------- ----------------
JOB_DEL_PROJECTS 67 4

Now you can stop the job using

exec DBMS_SCHEDULER.stop_JOB (job_name => 'JOB_DEL_PROJECTS');

or you can kill the SID