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C:\Documents and Settings\Administrator>exp cyy/cyy@bsrs file=D:\backup_oracle.dmp log=D:\backup_oracle.log owner = (cyy)£»
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SQL> grant resource,connect to cyy2;
SQL> grant dba to cyy2;                                                      //¸³DBAȨÏÞ
SQL> revoke unlimited tablespace from cyy2;                     //³·Ïú´ËȨÏÞ
SQL> alter user cyy2 quota 0 on system;                           //½«Óû§cyy2ÔÚSystem±í¿Õ¼äµÄÅä¶îÖÃΪ0
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C:\Documents and Settings\Administrator>imp cyy2/cyy@bsrs2  fromuser=cyy touser=cyy2 file=D:\backup_oracle.dmp  ignore=y grants=n;
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   [oracle@hylinux ~]$ sqlplus /nolog
    SQL*Plus: Release 10.2.0.1.0 - Production on ÐÇÆÚ¶þ 7ÔÂ 29  14:26:16 2008
    Copyright (c) 1982, 2005, Oracle.  All rights reserved.
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create undo tablespace undotBS2 datafile ......

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select column_name from all_cons_columns cc
where owner='SSH'  --SSHΪÓû§Ãû³Æ£¬Òª×¢Òâ´óСд
and table_name='SYS_DEPT' --SYS_DEPTΪ±íÃû£¬×¢Òâ´óСд
and exists (select 'x' from all_constraints c
where c.owner = cc.owner
and c.constraint_name = cc.constraint_name
and c.constraint_type ='P' ......

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