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create table tjob2(tt date);
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create or replace procedure t26 is
begin
  insert into tjob2 values(sysdate);
  commit;
end t26;
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SQL> declare
  2  tjob number;
  3  begin
  4    sys.dbms_job.submit(job => tjob,
  5                        what => 'T26;',
  6                        next_date => to_date('26-02-2010 15:34:28', 'dd-mm-yyyy hh24:mi:ss'),
  7                        interval => 'sysdate+1/1440');
  8    commit;
  9  end;
 10  /
next_date ÊÇÆðʼʱ¼ä
 interval => 'sysdate+1/1440');
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Select * from emp where sal>all(select sal from emp where deptno=30);
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MD F:\DB_BAK\%date:~0,10%
EXP userid=bszlhr/bszlhr@ORCL_14 file=F:\DB_BAK\%date:~0,10%\bszlhr%date:~0,10%.dmp log=f:\DB_BAK\%date:~0,10%\log_bszlhr_%date:~0,10%.log
  buffer=64000 owner=bszlhr
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select t.tablespace_name, round(sum(bytes/(1024*1024)),0) ts_size
from dba_tablespaces t, dba_data_files d
where t.tablespace_name = d.tablespace_name
group by t.tablespace_name;
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