The error in using dbms_job.submit()?

Question

I login as a normal user, execute a pl/sql block as follows and succeed to create a job.
declare
num_new_job_no number;
begin
sys.dbms_job.submit(job => num_new_job_no,
what => 'dbms_output.put_line(''test'')',
next_date => to_date('24-10-2003 11:04:42', 'dd-mm-yyyy hh24:mi:ss'),
interval => 'sysdate+1/24');
commit;
exception
when others then
dbms_output.put_line(sqlcode||sqlerrm);
end;
But after a hour I execute the code again, and return a error as follows:
-6550ORA-06550: �� 1 ��, �� 122 ��:
PLS-00103: ���ַ�� "END"����Ҫ����֮һʱ��
:= . ( % ;
��� ";" ���滻Ϊ "END" �����
Who can tell why? Thanks.

Answer 1

DBMS_JOB can only execute complete PL/SQL programs. You can run anonymous blocks, like this:
declare
num_new_job_no number;
begin
sys.dbms_job.submit(job => num_new_job_no,
what => 'begin dbms_output.put_line(''test''); end;',
next_date => sysdate + (1/1000),
interval => 'sysdate+1/24');
commit;
exception
when others then
dbms_output.put_line(sqlcode||sqlerrm);
end;However, you will never see any output from this job. Jobs run in a recursive session, so there is no client to which DBMS_OUTPUT can write. However, you can see whether it ran by checking in the USER_JOBS view.
Cheers, APC