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SQL> desc dbms_scheduler.create_schedule;
Parameter       Type                     Mode Default? 
--------------- ------------------------ ---- -------- 
SCHEDULE_NAME   VARCHAR2                 IN            
START_DATE      TIMESTAMP WITH TIME ZONE IN   Y        
REPEAT_INTERVAL VARCHAR2                 IN            
END_DATE        TIMESTAMP WITH TIME ZONE IN   Y        
COMMENTS        VARCHAR2                 IN  &n


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