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1 spool
spool d:\test\table.dat
select * from table_name;
spool off
2 sqlplus user/password@sid @test.sql > table.dat
test.sql
     select * from table_name;
     exit;


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extent--×îС¿Õ¼ä·ÖÅ䵥λ --tablespace management
block --×îСi/oµ¥Î»      --segment    management
create tablespace james
datafile '/export/home/oracle/oradata/james.dbf'
size 100M ¡¡¡¡¡¡¡¡¡¡¡¡--³õʼµÄÎļþ´óС¡¡
autoextend On¡¡¡¡¡¡¡¡ --×Ô¶¯Ôö³¤
next 10M¡ ......

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--ɾ³ýij¸öÓû§ÏµĶÔÏó   
set heading off;   
set feedback off;   
spool c:\dropobj.sql;   
  prompt --Drop constraint   
 select 'alter t ......

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1£ºÒÔÒ»¸öDBAÉí·ÖµÄÓû§µÇ½£¬´ò¿ªÒ»¸öÃüÁî´°¿Ú¡£Ö´ÐÐÃüÁî
SELECT /*+ rule */ s.username,
decode(l.type,'TM','TABLE LOCK',
'TX','ROW LOCK',
NULL) LOCK_LEVEL,
o.owner,o.object_name,o.object_type,
s.sid,s.serial#,s.terminal,s.machine,s.program,s.osuser
from v$session s,v$lock l,dba_objects o
WHERE ......
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