ORA-01422: while trying to create a job

Question

Hi all,
WE need a help from you, group of experts
we are getting the following error
ORA-01422: exact fetch returns more than requested number of rows
ORA-06512: at "SYS.DBMS_ISCHED", while trying to create a job using the following code
BEGIN
DBMS_SCHEDULER.create_program
(program_name => 'FAILURE_MONITOR_PRG',
program_action => 'JOB_MGR.SPR_FAILURE_MONITOR',
program_type => 'STORED_PROCEDURE',
number_of_arguments => 1,
enabled => FALSE
DBMS_SCHEDULER.define_metadata_argument
(program_name => 'FAILURE_MONITOR_PRG',
argument_position => 1,
metadata_attribute => 'EVENT_MESSAGE'
DBMS_SCHEDULER.create_job
(job_name => 'FAILURE_MONITOR_JOB',
program_name => 'FAILURE_MONITOR_PRG',
enabled => TRUE,
auto_drop => FALSE,
start_date => SYSDATE,
event_condition => 'tab.user_data.event = ''FAILED''',
queue_spec => 'event_queue'
END;
Oracle allows us to create the job if the parameter values for enabled is "false" in the DBMS_SCHEDULER.create_job call. But we got the same error
when tried to enable the job using exec DBMS_SCHEDULER.ENABLE ('FAILURE_MONITOR_JOB');
ORA-01422: exact fetch returns more than requested number of rows
ORA-06512: at "SYS.DBMS_ISCHED", line 2751
ORA-06512: at "SYS.DBMS_SCHEDULER", line 1794
ORA-06512: at line 1
Please help us to solve this issue
Thanks,
Reghu
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Answer 1

Hi Ravi,
Thank you for your kind support
That issue has been solved. Problem was with the event queue and only for that particular job i mentioned in the first post (I was able to create other jobs with different Events using the same queue) . After recreating the event queue i am able to create the same job. I got the same error when I tired to drop the queue, and then I dropped the queue table itself. Do you have any idea about what might had caused the issue?
Thanks
Reghu