12.2 Scheduler Job Disappeared After Creation

Hi all,
Just sharing an experience here. Recently in a migrated 12.2 environment I created a Scheduler Job and it simply disappeared. How come?
Well, seems since 12.2 the AUTO_DROP attribute is set to true by default. I absolutely don’t know why. So I had to recreate the job and set auto_drop to false, simple like this.

I couldn’t find any related bug on MOS, but I’d relate this as a bug, once the default behavior have changed with no prior information.
So, now on, I strongly suggest you to check on your job AUTO_DROP attribute after job creation.

Here is a test case that reproduces the problem:

In a 12.2 database:

begin 
  DBMS_SCHEDULER.create_job (
    job_name        => 'TEST_JOB',
    job_type        => 'PLSQL_BLOCK',
    job_action      => 'BEGIN null; END;',
    start_date      => SYSTIMESTAMP,
    repeat_interval => 'SYSTIMESTAMP + INTERVAL ''10'' SECOND',
    end_date        => NULL,
    enabled         => false,
    comments        => 'Test job');
end;
/
select ENABLED, AUTO_DROP, STATE, RUN_COUNT, FAILURE_COUNT,DEFERRED_DROP from dba_scheduler_jobs where job_name = 'TEST_JOB';
-- Job should appear here

begin 
  dbms_scheduler.enable('TEST_JOB'); 
  dbms_scheduler.run_job('TEST_JOB',false); 
end;
/
 
select ENABLED, AUTO_DROP, STATE, RUN_COUNT, FAILURE_COUNT,DEFERRED_DROP from dba_scheduler_jobs where job_name = 'TEST_JOB';

-- There is no job now in 12.2.

You can take the AUTO_DROP easily from the query above, or using getting the job_ddl and you’ll see the AUTO_DROP set to true, as in the bottom of this page by Tim Hall.

Hope it helps!
Cheers!