sssssssssssssssss

System.out.println(System.getProperty("file.encoding"));

<input type="button" onclick="doClose()" value="close">
<script language="javascript">
function doClose()
{
       window.top.opener = null;  
       window.top.close();
}
</script>

<value></value>表示空字符串，如果要将属性值设置为null必须用<null/>

variable ds number;
begin
  dbms_job.submit(:ds,'insert into testdb values(500);',sysdate,'sysdate+1/360');
  commit;
end;

variable ds number;
begin
  dbms_job.submit(:ds,'insert into testdb values(500);',sysdate,null);
  commit;
end;

variable ds number;
begin
  dbms_job.submit(:ds,'insert into testdb values(600);',to_date('2005-12-01 10:35:30','yyyy-mm-dd hh24:mi:ss'),'sysdate+1/360');
  commit;
end;

-------------------------------------------------------
select job from user_jobs;

-------------------------------------------------------
begin
  dbms_job.remove(1);
  dbms_job.remove(2);
  commit;
end;