Obviously, this was consuming lot of resources, and we decided to remove the jobs that are not necessary.
I logged in as SYS to scan dba_jobs, and I found there are 500 jobs scheduled
select job, log_user, priv_user,schema_user,what, interval, next_date, broken
from dba_jobs ;
When I tried to remove a job, with dbms_job.job =42, using
dbms_job.remove (42), I got the error below
So, there are 2 options
Option 1
1) Find the Owner of the job from dbms_job table, using schema_user column
2) Log in as schema user and then remove the job. Obviosly, this is time consuming to remove 500 jobs
Option 2
1) Oracle provides another package called dbms_ijob. Both Spec an Body are wrapped, so you cannot find the procedures, but it works pretty similar to dbms_job
Remember to COMMIT, in the end. Otherwise, it will still show up in dba_jobs in somebody else's session.