Oracle job scheduled execution

Oracle job is required to regularly execute the project. oracle job is used. I tried it myself and solved some problems. I published the job I wrote and kept a record. begin sys. dbms_job.change (job => 22, what => 'Clare result1 varchar2 (200); begin PROC_DATA_SYNC (result1); end ;', next_date => to_date ('28-03-2013 13:59:06 ', 'dd-mm-yyyy hh24: mi: ss'), interval => 'sysdate + 123'); commit; end;/here, the job name is 22 and is executed every minute. Here, the stored procedure is called, in addition, this stored procedure has parameters (this parameter is of the out output parameter type). Here, it takes some twists and turns to define the parameter type in what. declare result1 varchar2 (200 ), after begin, the stored procedure to be executed is followed by the stored procedure parameter, end ends, and inerval is the time expression. For testing, the stored procedure is executed every minute for the job.