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--´´½¨Óû§
create user iagent identified by ia
profile default 
default  tablespace users
temporary tablespace temp
account unlock;
 
--¸ø´´½¨µÄÓû§ÊÚȨ
grant create user,drop user,alter user,create any view,drop any view,exp_full_database,imp_full_database,dba,connect,resource,create session
to iagent;
--°Ñ±¸·ÝÎļþ¿½µ½±¾µØÓ²ÅÌ(±¾ÀýÒÔDÅÌΪÀý),È»ºóµ¼ÈëÊý¾Ý¿â
$ imp '
' file=d:\expdata_iagent_2009-12-07.dmp ignore=y indexes=y grants=y rows=y fromuser=iagent touser=iagent log=d:impdat_2009-12-07.log 
 
 
ÕâÀïÐèҪעÒâÒ»µã ±¸·ÝÎļþµ¼³öµÄʱºòÓõÄÊÇÄĸöÓû§ µ¼ÈëµÄʱºò¾ÍµÃÓÃÄǸöÓû§(»òÕßÊǾßÓк͵¼³ö±¸·ÝÓû§ÏàͬȨÏÞµÄÆäËûÓû§) £¬´ËÀýÖе¼Èë²ÉÓõÄÊÇÓû§Îªsystem ÃÜÂëΪdbmanagerµÄÓû§ £¬µ¼Èë³É¹¦ºó £¬ÔÚ¿Í»§¶ËÒªÁ¬½Ó´ËORACLE£¬ÐèÒªÐ޸Ŀͻ§¶ËµÄtnsnames.ora Îļþ È磺
IAGENT =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.235.128)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SERVICE_NAME = iagent)
    )
  )
HOSTÐ޸ijɷþÎñÆ÷µÄIPµØÖ·»òÕßÊǼÆËã»úÃû  £¬ÕâÑù¿Í»§¶Ë¾Í¿ÉÒÔÁ´½ÓÉÏÁË
 


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Select Round((discount/Amount),2) from dual;
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4. select job from emp;
5. select distinct job from emp;
6. select distinct empno, job from emp;
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alter system kill session 'sid,serial#' ;
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