SQL>   DECLARE
  2  	       X NUMBER;
  3  	     BEGIN
  4  	       SYS.DBMS_JOB.SUBMIT
  5  		 ( job	     => X
  6  		  ,what      => 'PURGE_CONTROLLER(''A'');'
  7  		  ,next_date => to_date('02/11/2011 14:00:00','dd/mm/yyyy hh24:mi:ss')
  8  		  ,interval  => '/*1:Days*/ sysdate + 1'
  9  		  ,no_parse  => TRUE
 10  		 );
 11  	       SYS.DBMS_OUTPUT.PUT_LINE('Job Number is: ' || to_char(x));
 12  	     END;
 13  	     /
Job Number is: 122                                                              

PL/SQL procedure successfully completed.

SQL> set serveroutput on;
SQL> Declare
  2    x Number;
  3  Begin
  4    Sys.Dbms_Job.Submit(Job       => x,
  5                        What      => 'PURGE_CONTROLLER(''A'');',
  6                        Next_Date => To_Date('02/11/2011 14:00:00',
  7                                             'dd/mm/yyyy hh24:mi:ss'),
  8                        Interval  => 'sysdate + 1',
  9                        No_Parse  => True);
 10    Sys.Dbms_Output.Put_Line('Job Number is: ' || To_Char(x));
 11  End;
 12  /
Job Number is: 104

PL/SQL procedure successfully completed.

SQL> Select job From dba_jobs aa
  2  Where aa.JOB =104;

       JOB
----------
       104

SQL> select * from v$version;

BANNER
--------------------------------------------------------------------------------
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
PL/SQL Release 11.2.0.1.0 - Production
CORE    11.2.0.1.0      Production
TNS for 32-bit Windows: Version 11.2.0.1.0 - Production
NLSRTL Version 11.2.0.1.0 - Production

 Declare
   x Number;
 Begin
   Sys.Dbms_Job.Submit(Job       => x,
                       What      => 'PURGE_CONTROLLER(''A'');',
                       Next_Date => To_Date('02/11/2011 14:00:00',
                                            'dd/mm/yyyy hh24:mi:ss'),
                       Interval  => 'sysdate + 1',
                       No_Parse  => True);
   commit; -- it must commit!                 
   Sys.Dbms_Output.Put_Line('Job Number is: ' || To_Char(x));
 End;